Precise photography control measurement method, device and system

Abstract

The invention provides a precision photography control measurement method, device and system. The method comprises the following steps: acquiring control network point coordinates of a plurality of control network points distributed in a peripheral area of a measured object; a plurality of measured points are arranged on the measured object; through a first total station erected on a first observation station, a first position relation between the first total station and the control network point is obtained, and a second position relation between the first total station and the measured point is obtained; the first position relation comprises a first distance, a first horizontal angle and a first zenith distance between the first total station and the control network point, and the second position relation comprises a second distance, a second horizontal angle and a second zenith distance between the first total station and the measured point; according to the control net point coordinates of the control net point, the first position relation and the second position relation, the measured point coordinates of the measured point are obtained, the contour of the measured object is determined according to the measured point coordinates, and coordinate measurement of the measured point can be accurately carried out on the measured object.

Description

Technical Field

[0001] The present application relates to the field of surveying and mapping technology, and in particular to a precision photography controlled measurement method, device and system. Background Art

[0002] Before devices leave the factory, they need to be inspected for contours to ensure that the contours of the devices meet the device quality requirements.

[0003] In the related art, for devices with circular end faces, the distance between two points on the end face of the device where a line passes through the center of the circle is obtained by measuring with a measuring tool such as a soft ruler, and whether the end face contour of the device is circular is determined based on the measured distance.

[0004] However, for large-sized devices, this method has the problem of difficult measurement and inaccurate measurement. When there is an obstacle between the two points, the method of the related art has the problem of being unable to measure the end face profile of the device. In addition, this method can only measure the end profile of the device, but cannot measure the profile of the area between the two end faces of the device. Summary of the invention

[0005] The embodiments of the present application provide a precision photography control measurement method, device and system to solve the problem in the prior art that it is impossible to simply and accurately measure the contour of the object being measured.

[0006] In a first aspect, an embodiment of the present application provides a precision photographic control measurement method, comprising: obtaining control point coordinates of a plurality of control points arranged in an area surrounding a measured object; a plurality of measured points are arranged on the measured object; by means of a first total station set up at a first measuring station, obtaining a first position relationship between the first total station and the control points, and obtaining a second position relationship between the first total station and the measured points; the first position relationship includes a first distance, a first horizontal angle and a first vertical distance between the first total station and the control points, and the second position relationship includes a second distance, a second horizontal angle and a second vertical distance between the first total station and the measured points; according to the control point coordinates of the control points, the first position relationship and the second position relationship, the measured point coordinates of the measured points are obtained, and the contour of the measured object is determined according to the measured point coordinates.

[0007] Optionally, the obtaining of control point coordinates of a plurality of control points arranged in the surrounding area of ​​the measured object includes: obtaining a third positional relationship between the second total station and the control points by means of a second total station set up at a second measuring station; the third positional relationship includes a third distance, a third horizontal angle and a third zenith distance between the second total station and the control points; and obtaining the control point coordinates of the control points according to the preset measuring station coordinates of the second measuring station and the third positional relationship.

[0008] Optionally, there are multiple second survey stations and multiple control points, and the second survey stations are located in the area between the measured object and the control points; the third position relationship between the second total station and the control points is obtained by using a second total station set up at the second survey station, including: for each second total station set up at the second survey station, measuring the third position relationship between the second total station and each of the control points that are in line of sight with the second total station in a clockwise or counterclockwise direction.

[0009] Optionally, for each second total station set up at the second survey station, the third positional relationship between the second total station and each of the control points in sight with the second total station is measured in sequence in a clockwise or counterclockwise measuring direction, including: for each second total station set up at the second survey station, obtaining a first target control point corresponding to the second total station from the control points in sight with the second total station; taking the first target control point as the backsight starting direction of the second total station, and measuring the third positional relationship between the second total station and each of the control points in sight with the second total station in sequence in a clockwise or counterclockwise direction.

[0010] Optionally, the control points include at least control points located at four first corner points of the area around the measured object; the second measuring station includes at least second measuring stations located at four second corner points of the area between the measured object and the control points; for each second total station set up at the second measuring station, the first target control points corresponding to the second total station are obtained from the control points in line of sight with the second total station, including: in a clockwise or counterclockwise arrangement direction, the four control points located at the four first corner points are respectively determined as the first target control points corresponding one-to-one to the second measuring stations located at the four second corner points.

[0011] Optionally, at least one control point is arranged between every two control points at adjacent first corner points; wherein each control point has line of sight with the second total stations at at least three second survey stations.

[0012] Optionally, according to the preset station coordinates of the second station and the third positional relationship, the control network point coordinates of the control network point are obtained, including: using the preset station coordinates of the second station and the third positional relationship as input parameters of an adjustment algorithm, and calculating the control network point coordinates of the control network point through the adjustment algorithm.

[0013] Optionally, there are multiple first survey stations and multiple control points, and the first survey stations are located in the area between the measured object and the control points; a first position relationship between the first total station and the control points is obtained by setting up a first total station at the first survey station, and a second position relationship between the first total station and the measured points is obtained, including: for each first total station set up at the first survey station, the first position relationship between the first total station and each of the control points that are in sight with the first total station is obtained in a clockwise or counterclockwise direction, and the second position relationship between the first total station and the measured points that are in sight with the first total station is obtained.

[0014] Optionally, for each first total station set up at the first survey station, the first position relationship between the first total station and each of the control points in sight with the first total station is obtained in sequence in a clockwise or counterclockwise measuring direction, and the second position relationship between the first total station and the measured point in sight with the first total station is obtained, including: for each first total station set up at the first survey station, a second target control point corresponding to the first total station is obtained from the control points in sight with the first total station; the second target control point is used as the backsight starting direction of the first total station, and the first position relationship between the first total station and each of the control points in sight with the first total station is measured in sequence in a clockwise or counterclockwise direction, and the second position relationship between the first total station and each of the measured points in sight with the first total station is measured in sequence.

[0015] Optionally, the multiple control points include control points located at four first corner points of the area around the measured object, and a control point is arranged between every two adjacent first corner points; the first measuring station includes at least eight first measuring stations located in the area between the measured object and the control points; for each first total station set up at the first measuring station, the second target control points corresponding to the first total station are obtained from the control points in line of sight with the first total station, including: according to a clockwise or counterclockwise arrangement direction, the eight control points are respectively determined as second target control points corresponding one-to-one to the first measuring station.

[0016] Optionally, the first total station at each of the first survey stations has line of sight with at least four of the control points.

[0017] Optionally, there are multiple first measuring stations and multiple control points, and the first measuring stations are located in the area between the measured object and the control points; obtaining the measured point coordinates of the measured point according to the control point coordinates of the control point, the first positional relationship and the second positional relationship includes: using the control point coordinates of the control point, the first positional relationship and the second positional relationship as input parameters of an adjustment algorithm, and calculating the measured point coordinates through the adjustment algorithm.

[0018] Optionally, there are a plurality of the first survey stations, there are a plurality of the control points, and the first survey stations are located in an area between the measured object and the control points; obtaining the measured point coordinates of the measured point according to the control point coordinates of the control point, the first positional relationship, and the second positional relationship, including: for each first total station arranged at the first survey station, obtaining the initial measured point coordinates of the measured point in line of sight with the first total station according to the control point coordinates of the control point, the first positional relationship between the first total station and the control point, and the second positional relationship between the first total station and the measured point in line of sight with the first total station; For each measured point, the initial measured point coordinates obtained by each first total station that has line of sight with the measured point are averaged to obtain the measured point coordinates of the measured point.

[0019] In a second aspect, an embodiment of the present application provides a precision photographic control measurement device, comprising: a first acquisition module, used to acquire control point coordinates of multiple control points arranged in the surrounding area of ​​a measured object; multiple measured points are arranged on the measured object; a second acquisition module, used to acquire a first position relationship between the first total station and the control points, and to acquire a second position relationship between the first total station and the measured points through a first total station set up at a first measuring station; the first position relationship includes a first distance, a first horizontal angle and a first vertical distance between the first total station and the control points, and the second position relationship includes a second distance, a second horizontal angle and a second vertical distance between the first total station and the measured points; a third acquisition module, used to acquire the measured point coordinates of the measured points according to the control point coordinates of the control points, the first position relationship and the second position relationship, and determine the contour of the measured object according to the measured point coordinates.

[0020] In a third aspect, an embodiment of the present application provides a precision photographic control measurement system, including: a control point coordinate acquisition module, used to acquire control point coordinates of multiple control points arranged in the surrounding area of ​​a measured object; multiple measured points are arranged on the measured object; a first total station set up at a first measuring station, used to acquire a first position relationship between the first total station and the control points, and to acquire a second position relationship between the first total station and the measured points; the first position relationship includes a first distance, a first horizontal angle and a first vertical distance between the first total station and the control points, and the second position relationship includes a second distance, a second horizontal angle and a second vertical distance between the first total station and the measured points; a measured point coordinate acquisition module, used to acquire the measured point coordinates of the measured point according to the control point coordinates of the control points, the first position relationship and the second position relationship, and determine the contour of the measured object according to the measured point coordinates.

[0021] In a fourth aspect, an embodiment of the present application further provides an electronic device, comprising a processor; and a memory for storing instructions executable by the processor; wherein the processor is configured to execute the instructions to implement the method of the first aspect.

[0022] In a fifth aspect, an embodiment of the present application further provides a computer-readable storage medium, which, when instructions in the computer-readable storage medium are executed by a processor of an electronic device, enables the electronic device to execute the method of the first aspect.

[0023] In this embodiment, the control grid point coordinates of multiple control grid points arranged in the surrounding area of ​​the measured object are obtained; the measured object is provided with multiple measured points; a first total station set up at a first measuring station is used to obtain a first positional relationship between the first total station and the control grid points, and a second positional relationship between the first total station and the measured points; the first positional relationship includes a first distance, a first horizontal angle and a first vertical distance between the first total station and the control grid points, and the second positional relationship includes a second distance, a second horizontal angle and a second vertical distance between the first total station and the measured points; the measured point coordinates of the measured points are obtained according to the control grid point coordinates of the control grid points, the first positional relationship and the second positional relationship, and the contour of the measured object is determined according to the measured point coordinates. The measured point coordinates of multiple measured points of the measured object can be obtained by the control grid points and the first total station of the first measuring station. The method is simple, and precise photographic control measurement of the measured object can be realized, avoiding the problem that the contour of the measured object cannot be simply and accurately obtained in the related art.

[0024] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0026] Figure 1 is a flowchart of the steps of a precision photography control measurement method provided by an embodiment of the present application; Figure 2 It is a schematic diagram of an application scenario of a precision photography control measurement method provided in an embodiment of the present application; Figure 3 is a flowchart of the steps of a precision photography control measurement method provided by an embodiment of the present application; Figure 4 It is a schematic diagram of an application scenario of a precision photography control measurement method provided in an embodiment of the present application; Figure 5 is a flowchart of a method for obtaining control point coordinates provided by an embodiment of the present application; Figure 6 It is a schematic diagram of an application scenario of a precision photography control measurement method provided in an embodiment of the present application; Figure 7 is a schematic diagram of the positional relationship between a total station and a prism provided in an embodiment of the present application; Figure 8 is a schematic diagram of the positional relationship between a total station and a prism provided in an embodiment of the present application; Fig. 9 is a flowchart of the steps of a precision photography control measurement method provided by an embodiment of the present application; Fig.10 It is a structural block diagram of a precision photography control and measurement device provided in an embodiment of the present application; Fig.11 It is a structural block diagram of a precision photography control measurement system provided in an embodiment of the present application; Fig.12 is a block diagram of an electronic device provided by an embodiment of the present invention; Fig.13 is a block diagram of another electronic device according to another embodiment of the present invention. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0028] The terms first, second, etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by the first, second, etc. are generally a class, and the number of objects is not limited, for example, the first object can be one or more. In addition, the terms in the specification and claims and / or the association relationship used to describe the associated objects represent that three kinds of relationships can exist, for example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. The character / generally represents that the associated objects before and after are a kind of or relationship. In the embodiment of the present application, the term multiple refers to two or more, and other quantifiers are similar.

[0029] Figure 1 This is a precision photography control measurement method provided by the embodiment of the present application, referring to Figure 1 , the method may include the following steps: Step 101, obtaining the control point coordinates of a plurality of control points arranged in the surrounding area of ​​the object to be measured.

[0030] Wherein, a plurality of measured points are arranged on the measured object.

[0031] For example, the method of this embodiment can be used to obtain the relative coordinates of the measured point. Correspondingly, the control points in this step are relative control points. The number of control points is preferably 8. For example, referring to Figure 2 , control points include There are 8 control points in total up to TP08.

[0032] Among them, the measured point in this step is equivalent to the image control point in the field of surveying and mapping, and multiple control points arranged in the surrounding area of ​​the measured object constitute a control network for obtaining the coordinates of the measured point. Among them, the number of control points can be adjusted according to the actual observation scene. Specifically, the number of control points can be increased or decreased according to the good or bad visibility conditions at the observation site. Specifically, when the visibility conditions are relatively good, the number of control points can be reduced, and when the visibility conditions are relatively poor, the number of control points can be increased.

[0033] For example, a tripod prism is set up at the control point, and the control point can be arranged on a hard ground, so that it is not easy to sink and displace when setting up the tripod, and the accuracy of the measurement result can be ensured. The control point can be arranged in an area with relatively few electromagnetic devices with strong electromagnetic radiation. In other words, it is not easy to have strong electromagnetic devices around the arranged control points, so as to prevent the electromagnetic devices from affecting the measurement accuracy.

[0034] For example, the method of this embodiment can be used to obtain the absolute coordinates of the measured points. Correspondingly, the control points in this step are absolute control points. At least four forced centering observation piers need to be built for each absolute control point, and at least four tripod prism control points are arranged, and the known coordinates are guided to the four control point observation piers. After the known coordinates are guided to the control points, the absolute coordinates of the control points can be obtained by the total station. For example, the absolute coordinates of the control points in the control network can be observed by using precise triangulation technology.

[0035] For example, the control point coordinates of each absolute control point can be obtained by the Global Navigation Satellite System (GNSS) method; wherein the control point coordinates obtained by GNSS may include X-axis coordinates and Y-axis coordinates. Further, the elevation value of each control point can be obtained by a total station. Thus, by combining GNSS technology and a total station, the three-dimensional coordinates of the control point can be obtained, and the three-dimensional coordinates include X-axis coordinates, Y-axis coordinates, and elevation values.

[0036] Step 102, by setting up a first total station at a first measuring station, a first position relationship between the first total station and a control point is obtained, and a second position relationship between the first total station and a measured point is obtained.

[0037] Among them, the first position relationship includes the first distance, the first horizontal angle and the first vertical distance between the first total station and the control point, and the second position relationship includes the second distance, the second horizontal angle and the second vertical distance between the first total station and the measured point.

[0038] Furthermore, during the measurement process of the present embodiment, when observing the photo control points, each first measuring station has line of sight with at least four control points. In other words, each first measuring station needs to see four appropriate control points. Among them, as the number of control points observed by the first measuring station increases, the measurement accuracy of the photo control points will increase accordingly, but too many control points will increase the workload, so it is not advisable to have too many control points. Among them, the photo control points are equivalent to the measured points in the present embodiment. Therefore, the number of measured points arranged on the measured object can be set according to user needs. For example, when the user has a relatively high requirement for measurement accuracy, the number of measured points can be set to be more, and when the user has a relatively high requirement for measurement efficiency, the number of measured points can be set to be less.

[0039] Step 103, acquiring the measured point coordinates of the measured point according to the control point coordinates of the control point, the first positional relationship and the second positional relationship, and determining the contour of the measured object according to the measured point coordinates.

[0040] For example, the control grid point coordinates, the first positional relationship, and the second positional relationship may be used as input parameters of an adjustment algorithm, and the coordinates of the measured point of the measured point may be calculated by the adjustment algorithm.

[0041] For example, the measured point coordinates of the measured point may also be acquired through a triangle analysis method, the control point coordinates of the control point, the first positional relationship, and the second positional relationship.

[0042] Specifically, the station coordinates of the first measuring station are acquired according to the control network point coordinates and the first positional relationship, and then the measured point coordinates of the measured point are acquired according to the station coordinates of the first measuring station and the second positional relationship.

[0043] Further, the station coordinates of the first station are obtained according to the following method: the sine value of the first distance in the first position relationship and the first vertical distance are determined as the projection distance of the first distance between the control point and the first station on the horizontal plane. The projection distance and the sine value of the first horizontal angle in the first position relationship are determined as the distance along the X axis between the control point and the first station; the projection distance and the cosine value of the first horizontal angle in the first position relationship are determined as the distance along the Y axis between the control point and the first station; the X axis coordinates and Y axis coordinates of the first station are obtained according to the X axis coordinates and Y axis coordinates of the control point, the distance along the X axis between the control point and the first station, and the distance along the Y axis between the control point and the first station.

[0044] According to the following method, the coordinates of the measured point are obtained: the sine values ​​of the second distance and the second vertical distance in the second position relationship are determined as the projection distance of the second distance between the measured point and the first measuring station on the horizontal plane. The sine value of the projection distance and the second horizontal angle in the second position relationship are determined as the distance along the X axis between the measured point and the first measuring station; the cosine value of the projection distance and the second horizontal angle in the second position relationship are determined as the distance along the Y axis between the measured point and the first measuring station; the X axis coordinates and the Y axis coordinates of the first measuring station, the distance along the X axis between the measured point and the first measuring station, and the distance along the Y axis between the measured point and the first measuring station are obtained.

[0045] Further, the first total station is used to test the elevation value of the measured point. Thus, based on the method of this embodiment, the measured point coordinates of the measured point can be accurately obtained, and the measured point coordinates specifically include the X-axis coordinate, Y-axis coordinate, and elevation value of the measured point.

[0046] For example, the measured points are used to reflect the contour of the measured object. After obtaining the measured point coordinates of the measured points, the contour of the measured object can be generated through drawing software. For example, if the interface of the measured object is a rectangle, the measured points can be set as the corner points of the end faces of the rectangular object, and the corner points between the end faces. After obtaining the measured point coordinates of the measured points, the contour of the measured object can be obtained according to the corner point connection line; for another example, if the measured object is cylindrical, the measured points can be set as points on the end faces of the measured object, and points between the two end faces; the contour of the end face of the measured object can be determined according to the points on the end faces, and the contour of the section where the points between the end faces are located can be determined according to the points between the end faces.

[0047] Furthermore, after obtaining the contour of the object to be measured based on the method of this embodiment, it is possible to determine whether the object to be measured is deformed based on the obtained contour, and then determine whether the object to be measured meets the quality requirements based on the judgment result of whether there is deformation; specifically, if it is deformed, it is determined that the object to be measured does not meet the quality requirements, and if it is not deformed, it is determined that the object to be measured meets the quality requirements. Therefore, based on the method of this embodiment, the quality of the object to be measured, especially the larger object to be measured, can be inspected.

[0048] For example, the object to be measured needs to meet the quality requirement of a rectangular cross-section. If, based on the coordinates of the measured points, it is determined that the end face of the object to be measured or the cross-section between the end faces is not a rectangle, then it is determined that the object to be measured does not meet the quality requirement. For another example, the object to be measured needs to meet the quality requirement of a circular cross-section. If, based on the coordinates of the measured points, it is determined that the end face or the cross-section between the end faces is not a circle, then it is determined that the object to be measured does not meet the quality requirement.

[0049] The precision photography control measurement technology of this embodiment can be applied to the fields of high-level precision and high-reliability quality measurement, etc. It is particularly suitable for the processing, manufacturing, installation measurement and quality inspection of large and complex devices (such as metal structures) in the field of precision engineering.

[0050] Photographic control measurement technology is a non-contact measurement technology. By taking relative photos of the object to be measured, a three-dimensional model is established, and artificial or intelligent image matching and interpretation are performed, and the precise spatial size or three-dimensional coordinates of the object to be measured are measured and solved. The technical method of photogrammetry of large metal structural devices or large structural devices made of other materials belongs to the category of precision photogrammetry technology. Among them, high-precision image control points need to be measured and set when performing precision photogrammetry. The higher the accuracy of the image control points, the higher the accuracy of the image control point coordinates obtained by the precision photogrammetry control method, or the size of the object to be measured obtained according to the image control point coordinates. Therefore, it is very necessary to study a precision photogrammetry control technology method. In this embodiment, the measured point of the object to be measured is the image control point for coordinate measurement.

[0051] Furthermore, the precision photography control measurement technology method of this embodiment can be divided into two types: absolute control measurement and relative control measurement. In the case of absolute control measurement, it is necessary to deploy forced centering observation piers, while relative control measurement does not require the deployment of forced centering observation piers, and only the temporary control points in the above steps need to be deployed. Figure 2 , can be arranged as To the relative control points shown in TP08. Furthermore, a tripod prism is set up at the control points. At least four forced centering observation piers are required to be set up at the control points for absolute control measurement, and the remaining control points are set up using a tripod prism. Figure 2 , can be controlled at the point , 3. 5. 7 mandatory centering observation piers and control points are set up , 4. 6. Tripod prisms are set up in 8 locations.

[0052] In this embodiment, the control grid point coordinates of multiple control grid points arranged in the surrounding area of ​​the measured object are obtained, and the first position relationship between the first total station and the control grid point is obtained by setting up a first total station at the first measuring station, and the second position relationship between the first total station and the measured point is obtained; the first position relationship includes the first distance, the first horizontal angle and the first vertical distance between the first total station and the control grid point, and the second position relationship includes the second distance, the second horizontal angle and the second vertical distance between the first total station and the measured point. According to the control grid point coordinates of the control grid point, the first position relationship and the second position relationship, the measured point coordinates of the measured point on the measured object are obtained, and the contour of the measured object is determined according to the measured point coordinates. Through the control grid point and the first total station of the first measuring station, the measured point coordinates of multiple measured points of the measured object can be obtained. The method is simple, and precise photographic control measurement of the measured object can be realized, avoiding the problem that the contour of the measured object cannot be simply and accurately obtained in the related art.

[0053] Based on the method of this embodiment, there is no need to ensure that different measured points are in a line of sight or unobstructed state, which can avoid the problem in the related art that when measuring with a ruler between two points of the measured object, accurate measurement cannot be made due to obstacles between the two points.

[0054] In addition, the method of measuring by a ruler based on the related art can only detect the contour of the end face of the object being measured, but cannot detect the cross-sectional contour between the end faces of the object being measured. Based on this embodiment, based on the first total station of the first measuring station and the control grid point coordinates, the coordinates of the measured points can be obtained, and there is no need to ensure that the measured points are in a line of sight state. Therefore, based on this embodiment, the contour of the cross section between the end faces of the object being measured can also be detected, which improves the accuracy of the contour quality detection of the object being measured and solves the problem that the cross-sectional contour between the end faces cannot be detected in the related art.

[0055] Figure 3 is a flowchart of a precision photography control measurement method provided by an embodiment of the present application, such as Figure 3 As shown, the method may include: Step 201: Acquire a third position relationship between the second total station and the control point by setting up a second total station at a second survey station.

[0056] The third position relationship includes the third distance between the second total station and the control network point, the third horizontal angle and the third zenith distance.

[0057] For example, there are multiple second measuring stations and multiple control points, and the second measuring stations are located in the area between the measured object and the control points; step 201 may include the following sub-steps: Sub-step A1, for each second total station set up at the second survey station, sequentially measure the third positional relationship between the second total station and each control network point in sight with the second total station in a clockwise or counterclockwise direction.

[0058] Reference Figure 2 The second measuring station may include four measuring stations from Y11 to Y14, wherein a second total station is set up at each second measuring station. The second measuring station is used to construct a control network to obtain the coordinates of each control network point in the control network, and the first measuring station is used to obtain the coordinates of the measured point. Furthermore, the first measuring station may include Figure 4 For details, refer to Figure 4 The first measuring station may include eight measuring stations Y21 to Y28 arranged in a clockwise order, wherein the first measuring stations Y22, Y24, Y26 and Y28 are not marked. Among them, X11, X31, X51 and X81 are measured points.

[0059] For example, sub-step A1 may include the following sub-steps: Sub-step A11, for each second total station set up at the second survey station, obtaining a first target control network point corresponding to the second total station from the control network points in line of sight with the second total station.

[0060] The control grid points at least include control grid points located at four first corner points of the area around the measured object; the second measuring stations at least include second measuring stations located at four second corner points of the area between the measured object and the control grid points.

[0061] For example, refer to Figure 2 The control points include at least TP01, TP03, TP05 and TP07, and the second measuring station includes at least Y11, Y12, Y13 and Y14.

[0062] Further, sub-step A11 may include the following sub-steps: Sub-step A111, according to the clockwise or counterclockwise arrangement direction, four control points located at the four first corner points are respectively determined as first target control points corresponding one-to-one to the second measuring stations located at the four second corner points.

[0063] Among them, at least one control grid point is arranged between every two adjacent control grid points at the first corner points; Each control network point has line of sight with the second total stations at at least three second survey stations.

[0064] For example, refer to Figure 2The control points include control points TP01, TP03, TP05, and TP07 located at the four first corner points of the area around the object to be measured. A control point TP02 is arranged between TP01 and TP03, a control point TP04 is arranged between TP03 and TP05, a control point TP06 is arranged between TP05 and TP07, and a control point TP08 is arranged between TP07 and TP01.

[0065] The second measuring station includes Y11, Y12, Y13 and Y14. Based on this embodiment, TP07, TP01, TP03 and TP05 are respectively determined as the first target control points of Y11, Y12, Y13 and Y14.

[0066] In this embodiment, control points can be arranged according to the measurement site, and at least some of the control points need to have line of sight. The number of control points can be adjusted according to the actual measurement application scenario. For example, under complex terrain conditions, the number of control points can be increased. During observation, each control point must have line of sight with at least three instrument stations (the first measurement station or the second measurement station) to ensure that at least three instrument stations observe each control point.

[0067] When placing control points, at least three sides of the control points must meet the preset side length conditions. In other words, each control point must have at least three sides to be constrained. The side length between TP08 and TP08 must be less than 50m. When the side length between the two is greater than 50m, the number of temporary control points needs to be increased during the control network observation. However, the sight distance cannot exceed 50m during the control network observation to ensure the measurement accuracy. For example, the control measurement uses a total station with a constant detection accuracy of 0.05mm and a prism constant difference of less than 0.1mm.

[0068] Sub-step A12, taking the first target control point as the backsight starting direction of the second total station, and sequentially measuring the third positional relationship between the second total station and each control point in line of sight with the second total station in a clockwise or counterclockwise direction.

[0069] For example, refer to Figure 2 TP07, TP01, TP03, and TP05 are determined as the backsight starting directions of Y11, Y12, Y13, and Y14, respectively.

[0070] Step 202: acquiring the control point coordinates of the control point according to the preset station coordinates of the second station and the third positional relationship.

[0071] For example, one of the plurality of second total stations is determined as a target second total station, and the target second total station (for example, Figure 2The second total station at Y11 in the middle) sets the preset station coordinates ( , , ), is the target second total station and its backsight starting direction (for example, Figure 2 TP07 in the ); wherein the starting azimuth is equivalent to the horizontal angle between the second total station of the target and its backsight starting direction. , , They are respectively the X-axis coordinate, Y-axis coordinate, and elevation value of the preset measuring station.

[0072] Furthermore, with the first target control point as the backsight start direction of the second survey station, the second total station of the second survey station is used to sequentially measure the third position relationship between the second total station and each control point in sight with the second total station in a clockwise or counterclockwise direction. Figure 2 The second total station at TP01 in the middle) sets the preset station coordinates ( , , ), is the target second total station and its backsight starting direction (for example, Figure 2 TP07 in the ), and the third position relationship of each second total station test, to obtain the control network point coordinates of the control network points.

[0073] Further, according to the preset station coordinates of the target second station, the starting azimuth, and the third positional relationship between the target second station and each control point, the initial control point coordinates of each control point are obtained. Then, the next second station of the target second station is determined in a clockwise or counterclockwise direction, and the station coordinates of the next second station are calculated according to the initial control point coordinates of one of the control points and the third positional relationship between the next second station and the control point, and the initial control point coordinates of each control point are calculated according to the station coordinates of the second station and the third positional relationship between other control points.

[0074] After calculating the initial control network point coordinates corresponding to the second total station at each second survey station based on the third positional relationship measured by the second total station at each second survey station, for each control network point, the initial control network point coordinates calculated by the second total station at each second survey station that has line of sight with the control network point are averaged to obtain the network point coordinates of the control network point.

[0075] The following is an example of calculating the point coordinates of the control point according to the station coordinates and horizontal angle of the target second station and the third positional relationship between the target second station and the control point, to illustrate the coordinate conversion method between the second station and the control point: For example, the third distance in the third positional relationship and the sine value of the third zenith distance are determined as the projection distance of the third distance between the control point and the second station on the horizontal plane. The projection distance and the sine value of the third horizontal angle in the third positional relationship are determined as the distance along the X axis between the control point and the second station; the projection distance and the cosine value of the third horizontal angle in the third positional relationship are determined as the distance along the Y axis between the control point and the second station; the X-axis coordinates and Y-axis coordinates of the control point are obtained according to the X-axis coordinates and Y-axis coordinates of the second station, the distance along the X axis between the control point and the second station, and the distance along the Y axis between the control point and the second station. The elevation of the control point is obtained by the total station.

[0076] In other words, in this embodiment, one of the second measuring stations is used as the starting measuring station, and the third positional relationship between each second measuring station and each control grid point is measured in turn along the clockwise or counterclockwise direction, and the grid point coordinates of each control grid point are obtained according to the third positional relationship. Further, a preset coordinate can be set for the starting measuring station, and a preset angle can be set for the starting measuring station and the backsight starting direction of the starting measuring station. For example, referring to Figure 2 , the starting station is Y11, the backsight starting direction of Y11 is TP07, and the X-axis coordinate of Y11 is , the Y-axis coordinate is , the elevation value is H0; the starting azimuth of the Y01 and TP07 directions is .

[0077] For example, step 202 may include the following sub-steps: Sub-step B1, using the preset station coordinates of the second station and the third positional relationship as input parameters of an adjustment algorithm, and obtaining the control network point coordinates of the control network point through calculation using the adjustment algorithm.

[0078] For example, the coordinates of the control points may also be obtained by a triangulation analysis method, the specific method of which has been described in the aforementioned step 202 and will not be repeated here.

[0079] For example, there are multiple first measuring stations and multiple control points, and the first measuring stations are located in an area between the measured object and the control points.

[0080] Step 203, for each first total station set up at the first survey station, obtain the first position relationship between the first total station and each control network point that has a line of sight with the first total station in sequence in a clockwise or counterclockwise direction, and obtain the second position relationship between the first total station and the measured point that has a line of sight with the first total station.

[0081] Among them, the first position relationship includes the first distance, the first horizontal angle and the first vertical distance between the first total station and the control point, and the second position relationship includes the second distance, the second horizontal angle and the second vertical distance between the first total station and the measured point.

[0082] For example, step 203 may include the following sub-steps: Sub-step C1, for each first total station set up at the first survey station, obtaining a second target control network point corresponding to the first total station from the control network points in line of sight with the first total station.

[0083] For example, the multiple control points include control points located at four first corner points around the measured object, and one control point is set between every two adjacent first corner points; the first measuring station includes at least eight first measuring stations located in the area between the measured object and the control points.

[0084] The arrangement positions and the number of the measured points as the photo control points can be set according to the requirements of the photogrammetry. For example, a reflective film is used to make the photo control point marks to improve the ranging accuracy. That is, a reflective film is set at the measured point, and the first total station obtains the second positional relationship between the measured point and the first total station through the signal reflected by the reflective film.

[0085] Furthermore, the shape of the image control point mark pattern (i.e., the reflective film at the measured point) can be designed according to the photography requirements and the measurement requirements of the first total station. For example, it can be set to a crosshair shape, and the thickness of the smallest crosshair in the center is not greater than 0.1 mm. Furthermore, the crosshairs are thin in the center and thicker toward the outside, which is conducive to the first total station to take images.

[0086] Furthermore, because redundant observations are required to determine measurement accuracy, the observation of the image control point needs to be intersected with no less than three instrument stations. If two stations intersect, two observations are made at different stations. Among them, the maximum intersection angle of the image control point observation is not less than 90-120°, and the minimum intersection angle is not less than about 45°.

[0087] For example, when the measurement accuracy of the measured point is required to be around 1mm, the prism-free ranging method is directly used to calculate the coordinates of the measured point. When the measurement accuracy of the measured point is required to be less than 1mm, the horizontal angle intersection method can be used to calculate the coordinates of the measured point to improve the measurement accuracy of the coordinates of the measured point.

[0088] The precision photogrammetry control measurement technology of this embodiment is an important guarantee for realizing precision photogrammetry technology, and its main features are high accuracy and high reliability. When measuring the coordinates of the measured point based on this embodiment, the relative control measurement accuracy can reach 0.1mm, and the absolute control measurement accuracy can reach 1mm, where the measurement accuracy reflects the error in the point position per kilometer. It should be noted that the reason why the absolute control measurement accuracy is lower than the relative control measurement accuracy is that the absolute control measurement has the error of the starting point and the error propagation of the measurement line, while the relative control measurement only has the prism constant difference and the total station observation error.

[0089] For example, when controlling the measurement, a prism with a prism constant difference of less than 0.1mm is used, and the total station plus constant detection error is 0.05mm. The maximum viewing distance of the total station observation is controlled within 50m, and the measurement accuracy of the control network can reach 0.1mm, which reflects the error in the position of the control network points.

[0090] Absolute measurement can use precise triangulation technology to observe the control network without considering the influence of the starting point error and the propagation of the measurement line error. The relative accuracy obtained based on this technology will reach 0.1mm. The repeated measurement accuracy of the measured point based on the absolute measurement method is slightly lower than the relative control measurement accuracy, but the relative size accuracy of the measured object is the same. The difference is that the measurement accuracy of the absolute coordinate position obtained based on absolute measurement is worse, and the measurement accuracy is about 0.2mm. The reason for this problem is that there is a centering error of the observation base twice in absolute measurement.

[0091] For example, the plurality of control points include control points at four first corner points of the area around the measured object, and one control point is arranged between every two adjacent first corner points; the first measuring stations include at least eight first measuring stations located in the area between the measured object and the control points; further, sub-step C1 may include the following sub-steps: Sub-step C11, according to the clockwise or counterclockwise arrangement direction, the eight control points are respectively determined as second target control points corresponding to the first measuring station one by one.

[0092] Among them, the first total station at each first survey station has line of sight with at least four control points.

[0093] For example, refer to Figure 4 The first station includes 8 stations from Y21 to Y28, and the second station includes There are eight first measuring stations from Y21 to Y28, which are arranged in a clockwise direction. It should be noted that Y22, Y24, Y26 and Y28 are not marked in the figure. Based on the method of this step, the control points TP07 to TP06 are respectively determined as the second target control points of the first measuring stations Y21 to Y28.

[0094] Sub-step C2, taking the second target control point as the backsight starting direction of the first total station, measuring the first position relationship between the first total station and each control point that has a line of sight with the first total station in a clockwise or counterclockwise direction, and measuring the second position relationship between the first total station and each measured point that has a line of sight with the first total station in sequence.

[0095] There are multiple first measuring stations and multiple control network points, and the first measuring station is located in the area between the measured object and the control network point.

[0096] Step 204, using the control grid point coordinates, the first positional relationship and the second positional relationship of the control grid point as input parameters of an adjustment algorithm, and calculating the coordinates of the measured point through the adjustment algorithm.

[0097] In this embodiment, the coordinates of multiple measured points of the measured object can be obtained by controlling the grid points and the first total station of the first measuring station. The method is simple and can realize precise photographic control measurement of the measured object, avoiding the problem in related technologies that the contour of the measured object cannot be simply and accurately obtained.

[0098] For example, there are multiple first measuring stations and multiple control points, and the first measuring station is located in the area between the measured object and the control points; after step 203, the following steps are also included: Step 205, for each first total station deployed at the first survey station, the initial measured point coordinates of the measured point in line of sight with the first total station are obtained based on the control network point coordinates of the control network point, the first positional relationship between the first total station and the control network point, and the second positional relationship between the first total station and the measured point in line of sight with the first total station.

[0099] For example, refer to Figure 4 , the first total station Y21, Y22 and Y28 are all in line of sight with the measured point X11, and the initial measured point coordinates of the measured point X11 are obtained according to the first total station Y21, Y22 and Y28, respectively. Among them, Y22 and Y28 are not marked.

[0100] Step 206 , for each measured point, the initial measured point coordinates obtained by each first total station that has line of sight with the measured point are averaged to obtain the measured point coordinates of the measured point.

[0101] For example, the initial measured point coordinates of the measured point X11 are obtained according to the first total station Y21, Y22 and Y28 respectively, and the three initial measured point coordinates are averaged to obtain the measured point coordinates of the measured point X11.

[0102] Further, see Figure 5 The precision photography control measurement method of this embodiment may include the following steps: Step S1: deploy There are eight control sites from Y11 to TP08, and four instrument sites from Y11 to Y14.

[0103] The four instrument stations in this step are equivalent to the second measuring station in the aforementioned embodiment.

[0104] For example, refer to Figure 2 , set up eight control points with tripods and prisms around the object to be measured on site To TP08, the instrument sites are arranged with four instrument sites Y11 to Y14. If the object to be measured is large and affects the line of sight, additional instrument sites must be added. Each prism site has at least three instrument observation directions. Among them, the second measuring station where the tripod prism is set is a free-standing virtual site, and the prism is set up with a precision base bracket; the instrument site is a free-standing virtual site.

[0105] Step S2, set the Y11 station coordinates to , , , Y01 to TP07 direction is the starting azimuth .

[0106] Step S3, set up the total station at the Y01 instrument site and level it, input the meteorological parameters into the total station, set up the prisms at Go to TP08 and make it level, and align the prism face with the direction of the total station.

[0107] The total station in this step is the second total station in the aforementioned embodiment, and the instrument site in this step is the second measuring station in the aforementioned embodiment.

[0108] During the measurement, when rotating the prism lens, the prism bracket needs to be kept stationary. Specifically, the bracket and the base are marked or the bracket is fixed.

[0109] Step S4, taking TP07 as the backsight starting direction, observe TP07, TP08, , , TP03, TP04, and TP04 directions to obtain measurement data.

[0110] The measurement data obtained in this step is the third positional relationship in the aforementioned embodiment.

[0111] For example, if Y21 and TP04 and TP06 directions are not interlinked, observe five directions.

[0112] Reference Figure 2 , the measurement data are arranged in order: Y11 and The distance between , horizontal angle , Zenith distance , Y11 and The distance between , horizontal angle , Zenith distance , Y11 and The distance between 1. Horizontal angle 1. Zenith distance 1, Y11 and The distance between 2. Horizontal angle , Zenith distance 2, Y11 and The distance between 3 3. Horizontal angle 3. Zenith distance 3, Y11 and The distance between 4 4. Horizontal angle 4. Zenith distance 4, Y11 and The distance between 6 6. Horizontal Angle 6. Zenith distance 6. Observation at station Y11 is completed.

[0113] Step S5, move the total station to the Y12 instrument site and level it, input the meteorological parameters into the total station, and align the prism with the direction of the total station.

[0114] During the test, the bracket must remain stationary while the prism head is rotated.

[0115] Step S6, For the backsight starting direction, observe the seven directions of TP01, TP02, TP03, TP04, TP05, TP06, and TP08 in sequence according to the preset number of measurements to obtain measurement data.

[0116] Reference Figure 2 , the measurement data results are arranged in order: Y12 and The distance between , horizontal angle 1. Zenith distance , Y02 and The distance between 2. Horizontal angle 2. Zenith distance 2, Y02 and The distance between 3. Horizontal angle 3. Zenith distance 3, Y02 and The distance between 4. Horizontal angle 4. Zenith distance 4. Y02 and The distance between 5. Horizontal angle 5. Zenith distance 5.Y02 and The distance between 6 6. Horizontal Angle 6. Zenith distance 6, Y02 and The distance between 8 8. Horizontal Angle 8. Zenith distance 8. Observation at station Y12 is completed.

[0117] Step S7, move the total station to the Y13 instrument site and level it, input the meteorological parameters into the total station, and align the prism with the direction of the total station.

[0118] During measurement, the bracket remains stationary while the prism head is rotated.

[0119] Step S8, taking TP03 as the backsight starting direction, observing seven directions of TP03, TP04, TP05, TP06, TP07, TP08, and TP02 in sequence according to a preset number of measurement rounds to obtain measurement data.

[0120] Reference Figure 2 , the measurement data results are arranged in order: Y13 and The distance between 3 3. Horizontal angle 3. Zenith distance 4, Y13 and The distance between 4 4. Horizontal angle 4. Zenith distance 4, Y13 and The distance between 5. Horizontal angle 5. Zenith distance 5, Y13 and The distance between 6 6. Horizontal Angle 6. Zenith distance 6, Y13 and 7 The distance between 7. Horizontal Angle 7. Zenith distance 7, Y13 and The distance between 8 8. Horizontal Angle 8. Zenith distance 8, Y13 and The distance between 2 2. Horizontal angle 2. Zenith distance 2. Observation at station Y13 is completed.

[0121] Step S9, move the total station to the Y14 instrument site and level it, input the meteorological parameters into the total station, and align the prism with the direction of the total station.

[0122] During measurement, the bracket remains stationary while the prism head is rotated.

[0123] Step S10, taking TP05 as the backsight starting direction, observe TP05, TP06, TP07, TP08, , TP02, and TP04 to obtain measurement data.

[0124] Reference Figure 2 , the measurement data results are arranged in order: Y14 and The distance between 5 5. Horizontal angle 5. Zenith distance 5, Y14 and The distance between 6 6. Horizontal Angle 6. Zenith distance 6, Y14 and 7 The distance between 7. Horizontal Angle 7. Zenith distance 7, Y14 and The distance between 8 8. Horizontal Angle 8. Zenith distance 8, Y14 and The distance between 1 1. Horizontal angle 1. Zenith distance 1, Y14 and The distance between 2 2. Horizontal angle 2. Zenith distance 2, Y14 and The distance between 4 4. Horizontal angle 4. Zenith distance 4. Observation at station Y14 is completed.

[0125] Step S11, after processing the observation data, the measurement accuracy of the observation data is analyzed. If the measurement accuracy is unqualified, re-measurement is performed. If the accuracy is qualified, the image control point observation is performed.

[0126] The image control point is the measured point in the aforementioned embodiment.

[0127] The method for calculating the dot coordinates of the control dot is: when calculating the relative control coordinates (i.e., the relative dot coordinates), the method of setting the coordinate origin is used for calculation. For example, setting the Y01 coordinate to , , , with the TP07 backsight direction as the azimuth , through one point one direction adjustment calculation, the coordinates of the network point are obtained. Furthermore, the point position error obtained by the adjustment calculation is used to evaluate and analyze the measurement accuracy of the control network point.

[0128] When calculating the absolute control coordinates (i.e., the absolute grid point coordinates), the known coordinates are measured from the known starting point to the control grid point using the precise three-dimensional coordinate transfer measurement technology or precise traverse measurement technology. In addition, the coordinates of the multiple known points measured are used for constraint adjustment in the first adjustment calculation, and the coordinates are adjusted in one point and one direction in the second adjustment calculation to eliminate the error of the measurement propagation within the network, where one point and one direction are selected as the longer side.

[0129] Furthermore, the multiple absolute control points may include four tripod prism control points. Among them, the known coordinates use the high-level control points at the construction site. For example, at least three suitable known points can be selected, and according to the actual observation scene, precise satellite positioning measurement technology, precise three-dimensional coordinate transfer measurement technology, precise wire measurement and other technologies can be used for surveying; and underground cavern surveying can use precise three-dimensional coordinate transfer measurement technology or precise wire measurement technology for ground surveying to survey the known coordinates to the control points.

[0130] Reference Figure 7 , the distance between Y11 and TP07 is S107, then the projection distance between Y01 and TP07 in the XY plane is 07 07×COS(90°-β107). The coordinates of Y01 are ( , , ), refer to Figure 8, in the XY plane, the distance between Y01 and TP07 along the X axis is 07×COS (90°-ɑ107), the distance between Y11 and TP07 along the Y axis is 07×sin(90°-ɑ107),then the X-axis coordinate of TP07 is X0+ 07×COS (90°-ɑ107), Y axis coordinate is Y0+ 07×sin(90°-ɑ107). Furthermore, the height H of TP07 can be tested by total station.

[0131] Further, see Fig. 9 , the method for obtaining the coordinates of the measured point may include the following steps: Step F1, arrange 24 image control points from X11 to X83 on the surface of the object to be measured, and arrange 8 instrument stations from Y21 to Y28.

[0132] The image control point mark is the measured point in the above embodiment. The instrument station in this step is the first measuring station in the above embodiment.

[0133] Reference Figure 6 , the image control point marks include X11, X12, X13 to X81, X82, X83, a total of 24. It should be noted that the image control point marks X41, X42, X43, X21, X23, X61 and X81 are marked in the figure, and the others are not marked. In addition, Figure 6 The schematic connection lines of each measured point measured by the instrument at Y21 are marked, while the schematic connection lines between other total stations and measured points are not marked or are partially marked.

[0134] In this embodiment, during the actual test process, the number of image control points can be increased or decreased as needed. Figure 6 , the instrument stations are Y21 to Y28, a total of 8. Among them, the distance measurement is performed in a prism-free manner when marking the photo control points during observation. The coordinate calculation results of the measured points obtained are only used as a reference. The actual coordinates of the measured points are calculated by adjustment using the observation angle. For example, for photo control points with a vertical pitch angle exceeding 10 degrees, the coordinates calculated by the intersection method can be used to inversely calculate the horizontal distance, and then calculate the height difference and elevation. For photo control points with a vertical pitch angle within 10 degrees, the height difference and elevation can be directly calculated using the prism-free distance measurement method.

[0135] Step F2, set up the total station on the Y21 instrument site and level it, input the meteorological parameters into the total station, and align the prism observation surface with the direction of the total station.

[0136] The total station in this step is the first total station in the above-mentioned embodiment. During the test, the bracket remains stationary when the prism lens is rotated.

[0137] Step F3, taking TP07 as the backsight starting direction, observe TP07, TP08, , TP02, TP03, X81, X82, X83, X11, X12, X13, X21, X22, X23, obtain measurement data.

[0138] For example, the number of control points to be observed is not less than 4. The measurement data in this step includes the first position relationship and the second position relationship in the above-mentioned embodiment.

[0139] Reference Figure 6 , the measurement data results are arranged in the following order: Y21 and 7 The distance between 7. Horizontal Angle 7. Zenith distance 7, Y21 and The distance between , horizontal angle , Zenith distance , Y21 and The distance between 1. Horizontal angle 1. Zenith distance 1, Y21 and The distance between 2. Horizontal angle , Zenith distance 2, Y21 and The distance between 3 3. Horizontal angle 3. Zenith distance 3. Distance between Y21 and X81 , horizontal angle , Zenith distance , the distance between Y21 and X82 , horizontal angle , Zenith distance , the distance between Y21 and X83 , horizontal angle , Zenith distance , the distance between Y21 and X11 , horizontal angle , Zenith distance , the distance between Y21 and X12 , horizontal angle , Zenith distance , the distance between Y21 and X13 , horizontal angle , Zenith distance , the distance between Y21 and X21 , horizontal angle X21, Zenith distance Distance between X21, Y21 and X22 X22, horizontal angle X22, Zenith distance Distance between X22, Y21 and X23 X23, horizontal angle X23, Zenith distance X23, the measurement of the image control points of the Y21 station is completed.

[0140] Step F4, move the total station and set it up on the Y22 instrument site, input the meteorological parameters into the total station, and align the prism observation surface with the direction of the total station.

[0141] Step F5, take TP08 as the backsight starting direction, and observe TP08, , TP02, TP03, TP04, X11, X12, X13, X21, X22, X23, X31, X32, X23, obtain measurement data.

[0142] Reference Figure 6 , the measurement data results are arranged in the following order: Y22 and The distance between 8 8. Horizontal Angle 8. Zenith distance 8, Y22 and The distance between 1 1. Horizontal angle 1. Zenith distance 1, Y22 and The distance between 2 2. Horizontal angle 2. Zenith distance 2, Y22 and The distance between 3 3. Horizontal angle 3. Zenith distance 3, Y22 and The distance between 4 4. Horizontal angle 4. Zenith distance 4.

[0143] The distance between Y22 and X11 X11, horizontal angle X11, Zenith distance Distance between X11, Y22 and X12 X12, horizontal angle X12, Zenith distance Distance between X12, Y22 and X13 X13, horizontal angle X13, Zenith distance Distance between X13, Y22 and X21 X21, horizontal angle X21, Zenith distance Distance between X21, Y22 and X22 X22, horizontal angle X22, Zenith distance Distance between X22, Y22 and X23 X23, horizontal angle X23, Zenith distance Distance between X23, Y22 and X31 X31, horizontal angle X31, Zenith distance Distance between X31, Y22 and X32 X32, horizontal angle X32, Zenith distance Distance between X32, Y22 and X33 X33, horizontal angle X33, Zenith distance X33, thus, the image control point measurement of station Y22 is completed.

[0144] Step F6, move the total station and set it up on the Y23 instrument site, input the meteorological parameters into the total station, and align the prism observation surface with the direction of the total station.

[0145] During measurement, the bracket remains stationary while the prism head is rotated.

[0146] Step F7, with The starting direction of the backsight is the preset number of rounds of observation. , TP02, TP03, TP04, TP05, X21, X22, X23, X31, X32, X33, X41, X42, X43, obtain measurement data.

[0147] Referring to the figure, the measurement data results are arranged in order: Y23 and The distance between 1 1. Horizontal angle 1. Zenith distance 8, Y23 and The distance between 2 2. Horizontal angle 2. Zenith distance 2, Y23 and The distance between 3 3. Horizontal angle 3. Zenith distance 3, Y23 and The distance between 4 4. Horizontal angle 4. Zenith distance 4, Y23 and The distance between 5 5. Horizontal angle 5. Zenith distance 5. Distance between Y23 and X21 X21, horizontal angle X21, Zenith distance Distance between X21, Y23 and X22 X22, horizontal angle X22, Zenith distance Distance between X22, Y23 and X23 X23, horizontal angle X23, Zenith distance Distance between X23, Y23 and X31 X31, horizontal angle X31, Zenith distance Distance between X31, Y23 and X32 X32, horizontal angle X32, Zenith distance Distance between X32, Y23 and X33 X33, horizontal angle X33, Zenith distance Distance between X33, Y23 and X41 X41, horizontal angle X41, Zenith distance Distance between X41, Y23 and X42 X42, horizontal angle X42, Zenith distance Distance between X42, Y23 and X23 X43, horizontal angle X43, Zenith distance X43, the measurement of the image control points of the Y23 station is completed.

[0148] Step F8, observe instrument stations Y24 to Y08 in sequence to obtain measurement data.

[0149] According to the above steps, instrument stations Y24 to Y08 were observed in sequence to obtain measurement data.

[0150] Reference Figure 6 , the measurement data results are arranged in the following order: Y24 and The distance between 2 2. Horizontal angle 2. Zenith distance 2, Y24 and The distance between 3 3. Horizontal angle 3. Zenith distance 3, Y24 and The distance between 4 4. Horizontal angle 4. Zenith distance 4, Y24 and The distance between 5 5. Horizontal angle 5. Zenith distance 5. Y24 and The distance between 6 6. Horizontal Angle , Zenith distance 6. Distance between Y24 and X31 X31, horizontal angle X31, Zenith distance Distance between X31, Y24 and X32 X32, horizontal angle X32, Zenith distance Distance between X32, Y24 and X33 X33, horizontal angle X33, Zenith distance Distance between X33, Y24 and X41 X41, horizontal angle X41, Zenith distance Distance between X41, Y24 and X42 X42, horizontal angle X42, Zenith distance Distance between X42, Y24 and X43 X43, horizontal angle X43, Zenith distance Distance between X43, Y24 and X51 X51, horizontal angle X51, Zenith distance Distance between X51, Y24 and X52 X52, horizontal angle X52, Zenith distance Distance between X52, Y24 and X53 X53, horizontal angle X53, Zenith distance X53, the measurement of the image control points of station Y24 is completed.

[0151] After obtaining the distance, horizontal angle and zenith distance between Y28 and each measured point, refer to the above method to obtain the distance, horizontal angle and zenith distance between Y25, Y26, Y27 to Y28 and each measured point in turn. After obtaining the distance, horizontal angle and zenith distance between all the first measuring stations and each measured point, the measurement is completed.

[0152] Further, see Figure 6 , the image control point measurement data results of Y08 station are arranged in the following order: Y28 and The distance between 6 6. Horizontal Angle 6. Zenith distance 6, Y28 and 7 The distance between 7. Horizontal Angle 7. Zenith distance 7, Y28 and 8 Distance between 8. Horizontal Angle 8. Zenith distance 8, Y28 and The distance between 1 1. Horizontal angle 1. Zenith distance 1, Y28 and The distance between 2 2. Horizontal angle , Zenith distance 2. Distance between Y28 and X71 X71, horizontal angle X71, Zenith distance Distance between X71, Y28 and X72 X72, horizontal angle X72, Zenith distance Distance between X72, Y28 and X73 X73, horizontal angle X73, Zenith distance Distance between X73, Y28 and X81 X81, horizontal angle X81, Zenith distance Distance between X81, Y28 and X82 X82, horizontal angle X82, Zenith distance Distance between X82, Y28 and X83 X83, horizontal angle X83, Zenith distance Distance between X83, Y28 and X11 X11, horizontal angle X11, Zenith distance Distance between X11, Y28 and X12 X12, horizontal angle X12, Zenith distance Distance between X12, Y28 and X13 X13, horizontal angle X13, Zenith distance X13, the measurement of the image control points of station Y28 is completed.

[0153] Step F9, with To TP08 are known points, and measured points X11 to X83 are unknown points. The coordinates of the measured points X11 to X83 are calculated using the adjustment method.

[0154] After the observation of the image control points is completed, the data is processed and adjusted. During the calculation process, the known points are To TP08, the unknown points to be determined are X11, X12, X13 to X81, X82, X83. For example, the coordinates of the points to be determined can be calculated using the constrained adjustment calculation method. The calculation is divided into two results. One is the result of the distance measurement when observing with photo control points. The accuracy requirement is within 1mm and this result can be used directly. The other eliminates the observation distance of the photo control points and uses the observation angle for adjustment calculation to obtain the coordinate values ​​of the photo control points with higher accuracy. Furthermore, the measurement accuracy of the image control points is evaluated by using the mean error of the points after adjustment calculation.

[0155] refer to Fig.10, which shows a precision photographic control measurement device provided by an embodiment of the present application, the device 30 includes: a first acquisition module 301, used to obtain the control grid point coordinates of multiple control grid points arranged in the surrounding area of ​​the measured object; multiple measured points are arranged on the measured object; a second acquisition module 302, used to obtain a first position relationship between the first total station and the control grid point, and obtain a second position relationship between the first total station and the measured point through a first total station set up at a first measuring station; the first position relationship includes a first distance, a first horizontal angle and a first vertical distance between the first total station and the control grid point, and the second position relationship includes a second distance, a second horizontal angle and a second vertical distance between the first total station and the measured point; a third acquisition module 303, used to obtain the measured point coordinates of the measured point according to the control grid point coordinates of the control grid point, the first position relationship and the second position relationship, and determine the contour of the measured object according to the measured point coordinates.

[0156] Optionally, the first acquisition module 301 includes: a first acquisition sub-module, used to obtain a third position relationship between the second total station and the control point by setting up a second total station at the second survey station; the third position relationship includes a third distance, a third horizontal angle and a third zenith distance between the second total station and the control point; a second acquisition sub-module, used to obtain the control point coordinates of the control point according to the preset survey station coordinates of the second survey station and the third position relationship.

[0157] Optionally, there are multiple second measuring stations and multiple control points, and the second measuring stations are located in the area between the measured object and the control points; the first acquisition submodule includes: a first acquisition unit, which is used to measure, for each second total station set up at the second measuring station, the third position relationship between the second total station and each control point that has line of sight with the second total station in a clockwise or counterclockwise direction.

[0158] Optionally, the first acquisition unit includes: a first acquisition sub-unit, used to acquire, for each second total station set up at the second survey station, a first target control point corresponding to the second total station from the control points in sight with the second total station; a second acquisition sub-unit, used to use the first target control point as the backsight starting direction of the second total station, and measure the third position relationship between the second total station and each control point in sight with the second total station in a clockwise or counterclockwise direction.

[0159] Optionally, the control points include at least control points located at four first corner points of the area around the measured object; the second measuring stations include at least second measuring stations located at four second corner points of the area between the measured object and the control points; the first acquisition subunit includes: a first acquisition subunit, which is used to determine the four control points located at the four first corner points as first target control points corresponding one-to-one to the second measuring stations located at the four second corner points in a clockwise or counterclockwise arrangement direction.

[0160] Optionally, at least one control point is arranged between every two control points at adjacent first corner points; wherein each control point has line of sight with the second total stations at at least three second survey stations.

[0161] Optionally, the first acquisition submodule includes: a second acquisition unit, configured to use the preset station coordinates of the second station and the third positional relationship as input parameters of an adjustment algorithm, and calculate the control network point coordinates of the control network point through the adjustment algorithm.

[0162] Optionally, there are multiple first survey stations and multiple control points, and the first survey station is located in the area between the measured object and the control points; the second acquisition module 302 includes: a third acquisition sub-module, which is used to obtain, for each first total station set up at the first survey station, a first position relationship between the first total station and each control point that has a line of sight with the first total station in a clockwise or counterclockwise direction, and to obtain a second position relationship between the first total station and the measured point that has a line of sight with the first total station.

[0163] Optionally, the third acquisition submodule includes: a third acquisition unit, used to obtain, for each first total station set up at the first survey station, a second target control point corresponding to the first total station from the control points that are in sight with the first total station; a fourth acquisition unit, used to use the second target control point as the backsight starting direction of the first total station, and measure in a clockwise or counterclockwise direction, in sequence, a first position relationship between the first total station and each control point that is in sight with the first total station, and measure in sequence the second position relationship between the first total station and each measured point that is in sight with the first total station.

[0164] Optionally, the multiple control points include control points located at four first corner points of the area around the measured object, and one control point is arranged between every two adjacent first corner points; the first measuring station includes at least eight first measuring stations located in the area between the measured object and the control points; the third acquisition unit includes: a third acquisition sub-unit, which is used to determine the eight control points as second target control points corresponding to the first measuring stations in a clockwise or counterclockwise arrangement direction.

[0165] Optionally, the first total station at each first survey station has line of sight with at least four control points.

[0166] Optionally, there are multiple first measuring stations and multiple control points, and the first measuring stations are located in the area between the measured object and the control points; the third acquisition module 303 includes: a fourth acquisition submodule, which is used to use the control point coordinates, the first position relationship and the second position relationship of the control point as input parameters of the adjustment algorithm, and obtain the coordinates of the measured point by calculating the adjustment algorithm.

[0167] Optionally, there are multiple first survey stations, there are multiple control points, and the first survey station is located in an area between the measured object and the control points; the third acquisition module 303 includes: a fifth acquisition submodule, for acquiring, for each first total station arranged at the first survey station, initial measured point coordinates of the measured point in line of sight with the first total station according to the control point coordinates of the control point, a first positional relationship between the first total station and the control point, and a second positional relationship between the first total station and the measured point in line of sight with the first total station; The sixth acquisition submodule is used to average, for each measured point, the initial measured point coordinates obtained by each first total station that has line of sight with the measured point, to obtain the measured point coordinates of the measured point.

[0168] In this embodiment, the control grid point coordinates of multiple control grid points arranged in the surrounding area of ​​the measured object are obtained; multiple measured points are set on the measured object; through the first total station set up at the first measuring station, the first position relationship between the first total station and the control grid point is obtained, and the second position relationship between the first total station and the measured point is obtained; the first position relationship includes the first distance, the first horizontal angle and the first vertical distance between the first total station and the control grid point, and the second position relationship includes the second distance, the second horizontal angle and the second vertical distance between the first total station and the measured point; according to the control grid point coordinates of the control grid point, the first position relationship and the second position relationship, the measured point coordinates of the measured point are obtained, and the contour of the measured object is determined according to the measured point coordinates. Through the control grid point and the first total station of the first measuring station, the measured point coordinates of multiple measured points of the measured object can be obtained. The method is simple, and precise photographic control measurement of the measured object can be realized, avoiding the problem that the contour of the measured object cannot be simply and accurately obtained in the related technology.

[0169] Fig.11It shows a precision photographic control measurement system provided by an embodiment of the present application, and the system 40 includes: a control point coordinate acquisition module 401, which is used to acquire the control point coordinates of multiple control points arranged in the surrounding area of ​​the measured object; multiple measured points are arranged on the measured object; a first total station 402 set up at a first measuring station, which is used to acquire a first position relationship between the first total station and the control points, and to acquire a second position relationship between the first total station and the measured points; the first position relationship includes a first distance, a first horizontal angle and a first vertical distance between the first total station and the control points, and the second position relationship includes a second distance, a second horizontal angle and a second vertical distance between the first total station and the measured points; a measured point coordinate acquisition module 403, which is used to acquire the measured point coordinates of the measured point according to the control point coordinates of the control points, the first position relationship and the second position relationship, and determine the contour of the measured object according to the measured point coordinates.

[0170] In this embodiment, the control grid point coordinates of multiple control grid points arranged in the surrounding area of ​​the measured object are obtained; multiple measured points are set on the measured object; through the first total station set up at the first measuring station, the first position relationship between the first total station and the control grid point is obtained, and the second position relationship between the first total station and the measured point is obtained; the first position relationship includes the first distance, the first horizontal angle and the first vertical distance between the first total station and the control grid point, and the second position relationship includes the second distance, the second horizontal angle and the second vertical distance between the first total station and the measured point; according to the control grid point coordinates of the control grid point, the first position relationship and the second position relationship, the measured point coordinates of the measured point are obtained, and the contour of the measured object is determined according to the measured point coordinates. Through the control grid point and the first total station of the first measuring station, the measured point coordinates of multiple measured points of the measured object can be obtained, the method is simple, and precise photographic control measurement of the measured object can be realized, avoiding the problem that the contour of the measured object cannot be simply and accurately obtained in the related technology.

[0171] Fig.12 1 is a block diagram of an electronic device 500 according to an exemplary embodiment. For example, the electronic device 500 may be a mobile phone, a computer, a digital broadcast terminal, a messaging device, a game console, a tablet device, a medical device, a fitness device, a personal digital assistant, etc.

[0172] Reference Fig.12 , the electronic device 500 may include one or more of the following components: a processing component 502 , a memory 505 , a power component 506 , a multimedia component 508 , an audio component 510 , an input / output (I / O) interface 512 , a sensor component 514 , and a communication component 516 .

[0173] The processing component 502 generally controls the overall operation of the electronic device 500, such as operations associated with display, phone calls, data communications, camera operations, and recording operations. The processing component 502 may include one or more processors 520 to execute instructions to complete all or part of the steps of the above-mentioned method. In addition, the processing component 502 may include one or more modules to facilitate the interaction between the processing component 502 and other components. For example, the processing component 502 may include a multimedia module to facilitate the interaction between the multimedia component 508 and the processing component 502.

[0174] The memory 505 is used to store various types of data to support the operation of the electronic device 500. Examples of such data include instructions for any application or method operating on the electronic device 500, contact data, phone book data, messages, pictures, multimedia, etc. The memory 505 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic disk or optical disk.

[0175] The power supply component 506 provides power to the various components of the electronic device 500. The power supply component 506 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power to the electronic device 500.

[0176] The multimedia component 508 includes a screen that provides an output interface between the electronic device 500 and the user. In some embodiments, the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive input signals from the user. The touch panel includes one or more touch sensors to sense touch, slide, and gestures on the touch panel. The touch sensor may not only sense the demarcation of the touch or slide action, but also detect the duration and pressure associated with the touch or slide operation. In some embodiments, the multimedia component 508 includes a front camera and / or a rear camera. When the electronic device 500 is in an operating mode, such as a shooting mode or a multimedia mode, the front camera and / or the rear camera may receive external multimedia data. Each front camera and rear camera may be a fixed optical lens system or have a focal length and optical zoom capability.

[0177] The audio component 510 is used to output and / or input audio signals. For example, the audio component 510 includes a microphone (MIC), and when the electronic device 500 is in an operation mode, such as a call mode, a recording mode, and a voice recognition mode, the microphone is used to receive an external audio signal. The received audio signal can be further stored in the memory 505 or sent via the communication component 516. In some embodiments, the audio component 510 also includes a speaker for outputting audio signals.

[0178] I / O interface 512 provides an interface between processing component 502 and peripheral interface modules, such as keyboards, click wheels, buttons, etc. These buttons may include but are not limited to: a home button, a volume button, a start button, and a lock button.

[0179] The sensor assembly 514 includes one or more sensors for providing various aspects of status assessment for the electronic device 500. For example, the sensor assembly 514 can detect the open / closed state of the electronic device 500, the relative positioning of components, such as the display and keypad of the electronic device 500, and the sensor assembly 514 can also detect the position change of the electronic device 500 or a component of the electronic device 500, the presence or absence of user contact with the electronic device 500, the orientation or acceleration / deceleration of the electronic device 500, and the temperature change of the electronic device 500. The sensor assembly 514 may include a proximity sensor configured to detect the presence of nearby objects without any physical contact. The sensor assembly 514 may also include an optical sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 514 may also include an accelerometer, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

[0180] The communication component 516 is used to facilitate wired or wireless communication between the electronic device 500 and other devices. The electronic device 500 can access a wireless network based on a communication standard, such as WiFi, a carrier network (such as 2G, 3G, 4G or 5G), or a combination thereof. In an exemplary embodiment, the communication component 516 receives a broadcast signal or broadcast-related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 516 also includes a near field communication (NFC) module to facilitate short-range communication. For example, the NFC module can be implemented based on radio frequency identification (RFID) technology, infrared data association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology and other technologies.

[0181] In an exemplary embodiment, the electronic device 500 may be implemented by one or more application-specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic components to implement a precision photography control measurement method provided in an embodiment of the present application.

[0182] In an exemplary embodiment, a non-transitory computer-readable storage medium including instructions is also provided, such as a memory 504 including instructions, and the instructions can be executed by a processor 520 of an electronic device 500 to perform the above method. For example, the non-transitory storage medium can be a ROM, a random access memory (RAM), a CDROM, a magnetic tape, a floppy disk, an optical data storage device, etc.

[0183] Fig.13 6 is a block diagram of an electronic device 600 according to an exemplary embodiment. For example, the electronic device 600 may be provided as a server. Fig.13 The electronic device 600 includes a processing component 622, which further includes one or more processors, and a memory resource represented by a memory 632 for storing instructions executable by the processing component 622, such as an application. The application stored in the memory 632 may include one or more modules, each corresponding to a set of instructions. In addition, the processing component 622 is configured to execute instructions to perform a precision photography control measurement method provided in an embodiment of the present application.

[0184] The electronic device 600 may also include a power supply component 626 configured to perform power management of the electronic device 600, a wired or wireless network interface 650 configured to connect the electronic device 600 to a network, and an input / output (I / O) interface 658. The electronic device 600 may operate based on an operating system stored in the memory 632, such as Windows Server TM, Mac OS X TM, Unix TM, Linux TM, FreeBSD TM or the like.

[0185] An embodiment of the present application also provides a computer program product, including a computer program, and a precision photography control measurement method is implemented when the computer program is executed by a processor.

[0186] Those skilled in the art will readily appreciate other embodiments of the present application after considering the specification and practicing the application disclosed herein. The present application is intended to cover any variations, uses or adaptations of the present application, which follow the general principles of the present application and include common knowledge or customary techniques in the art that are not disclosed in the present application. The specification and examples are intended to be exemplary only, and the true scope and spirit of the present application are indicated by the following claims.

[0187] It should be understood that the present application is not limited to the precise structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present application is limited only by the appended claims.

[0188] The above are only preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.

[0189] The above is a detailed introduction to a precision photographic control measurement method, device, electronic device and computer-readable storage medium provided by the present application. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method of the present application and its core idea. At the same time, for general technical personnel in this field, according to the idea of ​​the present application, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A precision photography control measurement method, characterized in that: include: Acquire the coordinates of a plurality of control points arranged in the surrounding area of ​​the object to be measured; the object to be measured is provided with a plurality of measured points; By setting up a first total station at a first survey station, a first positional relationship between the first total station and the control network point is obtained, and a second positional relationship between the first total station and the measured point is obtained; the first positional relationship includes a first distance, a first horizontal angle, and a first vertical distance between the first total station and the control network point, and the second positional relationship includes a second distance, a second horizontal angle, and a second vertical distance between the first total station and the measured point; The measured point coordinates of the measured point are acquired according to the control point coordinates of the control point, the first positional relationship and the second positional relationship, and the contour of the measured object is determined according to the measured point coordinates.

2. The method according to claim 1, characterized in that The step of obtaining the coordinates of a plurality of control points arranged around the object to be measured comprises: By setting up a second total station at the second survey station, a third positional relationship between the second total station and the control network point is obtained; the third positional relationship includes a third distance, a third horizontal angle and a third zenith distance between the second total station and the control network point; The control grid point coordinates of the control grid point are acquired according to the preset station coordinates of the second station and the third positional relationship.

3. The method according to claim 2, characterized in that There are a plurality of the second measuring stations, there are a plurality of the control network points, and the second measuring stations are located in an area between the measured object and the control network points; The step of obtaining a third positional relationship between the second total station and the control network point by setting up a second total station at the second survey station includes: For each second total station set up at the second survey station, the third positional relationship between the second total station and each of the control network points in sight with the second total station is measured in sequence in a clockwise or counterclockwise direction.

4. The method according to claim 3, characterized in that: For each second total station set up at the second survey station, sequentially measuring the third positional relationship between the second total station and each of the control network points in sight with the second total station in a clockwise or counterclockwise direction, including: For each second total station set up at the second survey station, obtaining a first target control network point corresponding to the second total station from the control network points in sight with the second total station; Taking the first target control point as the backsight starting direction of the second total station, the third position relationship between the second total station and each control point in sight with the second total station is measured in sequence in a clockwise or counterclockwise direction.

5. The method according to claim 4, characterized in that The control grid points at least include control grid points located at four first corner points of the area around the measured object; the second measuring stations at least include second measuring stations located at four second corner points of the area between the measured object and the control grid points; For each second total station set up at the second survey station, obtaining a first target control network point corresponding to the second total station from control network points in line of sight with the second total station includes: According to the clockwise or counterclockwise arrangement direction, the four control grid points located at the four first corner points are respectively determined as the first target control grid points corresponding one-to-one to the second measuring stations located at the four second corner points.

6. The method according to claim 5, characterized in that At least one control grid point is arranged between every two adjacent control grid points at the first corner points; Each control network point has line of sight with the second total stations at at least three second survey stations.

7. The method according to claim 2, characterized in that Acquiring the control grid point coordinates of the control grid point according to the preset station coordinates of the second station and the third positional relationship includes: The preset station coordinates of the second station and the third positional relationship are used as input parameters of an adjustment algorithm, and the control network point coordinates of the control network point are calculated by the adjustment algorithm.

8. The method according to claim 1, characterized in that: There are a plurality of first measuring stations, a plurality of control points, and the first measuring station is located in an area between the measured object and the control points; a first positional relationship between the first total station and the control points is obtained by setting up a first total station at the first measuring station, and a second positional relationship between the first total station and the measured point is obtained, including: For each first total station set up at the first survey station, the first position relationship between the first total station and each of the control network points that are in sight with the first total station is obtained in sequence in a clockwise or counterclockwise direction, and the second position relationship between the first total station and the measured point that is in sight with the first total station is obtained.

9. The method according to claim 8, characterized in that For each first total station set up at the first survey station, sequentially obtaining a first position relationship between the first total station and each of the control network points in sight with the first total station in a clockwise or counterclockwise direction, and obtaining a second position relationship between the first total station and the measured point in sight with the first total station, including: For each first total station set up at the first survey station, obtaining a second target control network point corresponding to the first total station from the control network points in sight with the first total station; Taking the second target control point as the backsight starting direction of the first total station, the first position relationship between the first total station and each control point in sight with the first total station is measured in sequence in a clockwise or counterclockwise direction, and the second position relationship between the first total station and each measured point in sight with the first total station is measured in sequence.

10. The method according to claim 9, characterized in that The plurality of control points include control points at four first corner points around the measured object, and one control point is arranged between every two adjacent first corner points; the first measuring stations include at least eight first measuring stations located in the area between the measured object and the control points; The step of acquiring, for each first total station set up at the first survey station, a second target control network point corresponding to the first total station from control network points in line of sight with the first total station, comprises: According to the clockwise or counterclockwise arrangement direction, the eight control points are respectively determined as second target control points corresponding to the first measuring stations one by one.

11. The method according to claim 10, characterized in that The first total station at each of the first survey stations has line of sight with at least four of the control points.

12. The method according to claim 1, characterized in that There are a plurality of the first measuring stations, there are a plurality of the control points, and the first measuring stations are located in an area between the measured object and the control points; The acquiring the measured point coordinates of the measured point according to the control grid point coordinates of the control grid point, the first positional relationship and the second positional relationship comprises: The control grid point coordinates of the control grid points, the first positional relationship and the second positional relationship are used as input parameters of an adjustment algorithm, and the coordinates of the measured point are calculated by the adjustment algorithm.

13. The method according to claim 1, characterized in that There are a plurality of the first measuring stations, there are a plurality of the control points, and the first measuring stations are located in an area between the measured object and the control points; Acquiring the measured point coordinates of the measured point according to the control point coordinates of the control point, the first position relationship and the second position relationship, including: For each first total station arranged at the first survey station, initial measured point coordinates of the measured point in line of sight with the first total station are obtained according to the control network point coordinates of the control network point, the first positional relationship between the first total station and the control network point, and the second positional relationship between the first total station and the measured point in line of sight with the first total station; For each measured point, the initial measured point coordinates obtained by each first total station that has line of sight with the measured point are averaged to obtain the measured point coordinates of the measured point.

14. A precision photography control measuring device, characterized in that: include: A first acquisition module is used to acquire the coordinates of a plurality of control points arranged in the surrounding area of ​​the measured object; the measured object is provided with a plurality of measured points; A second acquisition module is used to acquire a first positional relationship between the first total station and the control network point, and to acquire a second positional relationship between the first total station and the measured point by means of a first total station set up at a first measuring station; the first positional relationship includes a first distance, a first horizontal angle, and a first vertical distance between the first total station and the control network point, and the second positional relationship includes a second distance, a second horizontal angle, and a second vertical distance between the first total station and the measured point; The third acquisition module is used to acquire the measured point coordinates of the measured point according to the control point coordinates of the control point, the first position relationship and the second position relationship, and determine the contour of the measured object according to the measured point coordinates.

15. A precision photography control measurement system, characterized in that: include: A control point coordinate acquisition module is used to acquire the control point coordinates of a plurality of control points arranged in the surrounding area of ​​the measured object; the measured object is provided with a plurality of measured points; A first total station set up at a first survey station is used to obtain a first positional relationship between the first total station and the control network point, and to obtain a second positional relationship between the first total station and the measured point; the first positional relationship includes a first distance, a first horizontal angle, and a first vertical distance between the first total station and the control network point, and the second positional relationship includes a second distance, a second horizontal angle, and a second vertical distance between the first total station and the measured point; The measured point coordinate acquisition module is used to acquire the measured point coordinates of the measured point according to the control point coordinates of the control point, the first position relationship and the second position relationship, and determine the contour of the measured object according to the measured point coordinates.

Images