Image control point identification device for low-altitude photogrammetry of unmanned aerial vehicle
By using magnetically connected multi-colored panels and RGB lamps in the image control point identification device for low-altitude photogrammetry of drone, the problem of poor identification effect in traditional devices in vegetation and dim weather is solved, and the problem of poor identification effect in vegetation is achieved. Higher recognition accuracy.
Patent Information
- Application Number
- CN202421059910.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-15
- Publication Date
- 2024-12-17
- Estimated Expiration
- 2034-05-15
AI Technical Summary
The color of the identification plate of the image control point identification device is fixed with the traditional drone low-altitude photogrammetry, which makes it easy to approach the vegetation color when it is around vegetation, resulting in identification errors, and poor recognition effect in dim light weather.
Design a device including a triangular magnetic plate, multiple color plate bodies and a quick replacement mechanism. The color plate bodies are connected by magnetic force to easily change colors, and RGB light tubes are installed on the connecting plate bodies to provide bright light assisted identification in dim weather. .
It effectively solves the identification error caused by the color of the marking plate and the vegetation color, and improves the camera's recognition accuracy of the marking plate in dim weather.
Smart Images
Figure CN222188353U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of roads and bridges, in particular to an image control point marking device for low-altitude photogrammetry of an unmanned aerial vehicle. Background Art
[0002] Low-altitude UAV photogrammetry has become an important surveying and mapping technology in the field of roads and bridges. The location and number of image control points involved are closely related to the accuracy of the final surveying and mapping products (such as DSM, DOM, DEM, DLG). Even the latest image control-free aerial survey technology still needs to improve the surveying and mapping accuracy by deploying a certain number of image control points. When deploying image control points in the field, it is necessary to allow as many cameras on different routes as possible to capture image control point markers, so that the points can be evenly punctured on different routes and different cameras during the internal puncturing process to improve the accuracy of aerial triangulation, especially in the construction of roads and bridges in the south, where there are places with lush surface vegetation and where traditional image control point markers are difficult to apply.
[0003] According to the public patent 202220018755.4, an image control point identification device for low-altitude photogrammetry of unmanned aerial vehicles includes a tripod bracket; a connecting rod, the connecting rod is installed on the top of the tripod bracket; and an identification panel, the identification panel is arranged on the top of the base, the shape of the identification panel is an equilateral triangle, the front side is composed of three colors with relatively obvious color difference, each color covers an isosceles triangle, each occupies one-third of the area of the identification panel, and the connecting rod, the base and the identification panel are connected by a fixed component. The utility model improves the image control point layout in the field, so that the cameras of different routes can take pictures of the image control point identification, so that the points can be evenly punctured on different routes and different cameras during the internal puncture process, so as to improve the accuracy of the aerial triangulation solution, especially in the south where the surface vegetation is lush and the traditional image control point identification is difficult to apply. In the process of realizing the utility model, the inventor found that at least the following problems in the prior art have not been solved. Although the identification panel is provided, the front side of the identification panel is composed of three colors with relatively obvious color difference, and each color covers an isosceles triangle, each occupying one-third of the area of the identification panel, it can It can effectively improve the visibility of drone image control points. It is applied to drone image control points with poor visibility. It solves the problem that when setting up field image control points, as many cameras as possible on different routes need to capture the image control point identification to improve the accuracy of aerial triangulation. However, during use, the identification plate used in the traditional drone low-altitude photogrammetry image control point identification device is generally fixed in color. When the device is set around vegetation, there is a situation where the color of the vegetation and the identification plate is close, which leads to easy recognition errors. Moreover, when surveying and mapping in dim weather, the recognition effect of the identification plate is not very good. For this reason, it is necessary to design a new technical solution to solve it. Utility Model Content
[0004] The purpose of the utility model is to overcome the shortcomings of the prior art, meet the actual needs, and provide an image control point marking device for low-altitude photogrammetry of unmanned aerial vehicles to solve the current traditional image control point marking device for low-altitude photogrammetry of unmanned aerial vehicles. The marking plate body used generally has a fixed color. When the device is set around vegetation, there is a situation where the color of the vegetation and the marking plate body is close, which leads to easy identification errors. Moreover, when surveying and mapping in dim weather, the camera's recognition effect on the marking plate body is not very accurate. Technical problems.
[0005] In order to achieve the purpose of the utility model, the technical solution adopted by the utility model is: to design an image control point marking device for low-altitude photogrammetry of an unmanned aerial vehicle, including a triangular magnetic plate, and also including:
[0006] Multiple color plates are attached to the top of the triangular magnetic plate;
[0007] The quick-change mechanism is provided at the bottom of the plurality of color plates. The quick-change mechanism comprises a circular groove, a magnetic block is installed inside the circular groove, a triangular magnetic plate is attached to the bottom of the magnetic block, and the magnetic block is magnetically connected to the triangular magnetic plate.
[0008] Preferably, the colors of the plurality of color plates are composed of colors with relatively obvious color differences.
[0009] Preferably, a support column is fixed to the bottom of the triangular magnetic plate, and a plurality of connecting plate bodies are fixed to the outer wall of the support column.
[0010] Preferably, a square groove is provided on the top of the connecting plate body, and an RGB lamp tube is installed inside the square groove.
[0011] Preferably, a fixing cylinder is fixed at the bottom of the support column, and an industrial control computer is installed at the front end of the fixing cylinder.
[0012] Preferably, a battery body is installed at the bottom of the fixing tube, and a USB charging port is installed at the front end of the battery body.
[0013] Compared with the prior art, the beneficial effects of the utility model are:
[0014] 1. The utility model, through the combination of a triangular magnetic plate, a magnetic block and a color plate, can not only set a plurality of color plates of different colors on the top of the triangular magnetic plate, so that cameras of different routes can capture the image control point identification, but also a magnetic block is set at the bottom of the color plate. The magnetic block is connected to the triangular magnetic plate by magnetic force, so that the color plate can be replaced quickly and conveniently, thereby replacing other color plates of different colors to distinguish them from the colors of surrounding vegetation and landforms, thereby solving the problem of traditional image control point identification devices for low-altitude photogrammetry of unmanned aerial vehicles, in which the identification plates used are generally fixed in color. When the device is set around vegetation, there is a situation where the colors of the vegetation and the identification plate are close, resulting in a technical problem that recognition errors are prone to occur.
[0015] 2. The utility model connects the plate, the square groove and the RGB lamp. When the weather is dim, the RGB lamp can emit lamps of different colors, so that cameras on different routes can capture image control point logos with bright colors. The auxiliary color plate can be used together, solving the technical problem that the camera's recognition effect on the logo plate is not very accurate when surveying and mapping in dim weather. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0017] Figure 2 It is a schematic diagram of the bottom structure of the color plate body of the utility model.
[0018] In the figure: 1. fixing tube; 101. supporting column; 102. industrial computer; 103. battery body; 104. USB charging port; 2. triangular magnetic plate; 201. color plate; 202. round groove; 203. magnetic block; 3. connecting plate; 301. square groove; 302. RGB lamp tube. DETAILED DESCRIPTION
[0019] The utility model is further described below in conjunction with the accompanying drawings and embodiments:
[0020] Example 1: An image control point marking device for low-altitude photogrammetry of unmanned aerial vehicles, see Figure 1 to Figure 2, including a triangular magnetic plate 2, and also including: a plurality of color plates 201, which are attached to the top of the triangular magnetic plate 2; a quick replacement mechanism, which is opened at the bottom of the plurality of color plates 201, and the quick replacement mechanism includes a circular groove 202, and a magnetic block 203 is installed inside the circular groove 202, and the bottom of the magnetic block 203 is attached to the triangular magnetic plate 2, and the magnetic block 203 is magnetically connected to the triangular magnetic plate 2, and a plurality of color plates 201 of different colors can be set on the top of the triangular magnetic plate 2, so that cameras of different routes can capture the image control point mark, and a magnetic block 203 is set at the bottom of the color plate 201 , by using the magnetic connection between the magnetic block 203 and the triangular magnetic plate 2, the color plate 201 can be directly removed from the surface of the triangular magnetic plate 2 by hand, so as to replace other color plates 201 of different colors, and continue to be magnetically adsorbed with the triangular magnetic plate 2, so that the color plate 201 can be distinguished from the surrounding vegetation and landforms, which solves the problem that the traditional image control point identification device for low-altitude photogrammetry of unmanned aerial vehicles generally uses a fixed color identification plate. When the device is set around vegetation, there is a situation where the colors of the vegetation and the identification plate are close, which leads to the technical problem that recognition errors are easy to occur.
[0021] For details, see Figure 1 , the colors of the multiple color plates 201 are composed of colors with relatively obvious color differences.
[0022] For further information, see Figure 1 A support column 101 is fixed to the bottom of the triangular magnetic plate 2, and a plurality of connecting plate bodies 3 are fixed to the outer wall of the support column 101.
[0023] It is worth noting that see Figure 1 A square groove 301 is provided on the top of the connecting plate 3, and an RGB lamp tube 302 is installed inside the square groove 301. When the weather is dim, the RGB lamp tube 302 can be used to emit lamps of different colors, so that cameras of different routes can capture image control point markers with bright colors, which can be used together with the auxiliary color plate 201.
[0024] It is worth noting that see Figure 1 A fixing cylinder 1 is fixed at the bottom of the supporting column 101 , and an industrial control computer 102 is installed at the front end of the fixing cylinder 1 .
[0025] It is worth mentioning that see Figure 1 A battery body 103 is installed at the bottom of the fixed tube 1 , and a USB charging port 104 is installed at the front end of the battery body 103 .
[0026] When using an image control point marking device for low-altitude photogrammetry of an unmanned aerial vehicle, a plurality of color plates 201 of different colors can be set on the top of the triangular magnetic plate 2, so that cameras on different routes can capture the image control point markings. Moreover, a magnetic block 203 is set at the bottom of the color plate 201. The magnetic block 203 is magnetically connected to the triangular magnetic plate 2. The color plate 201 can be directly removed from the surface of the triangular magnetic plate 2 by hand, so that other color plates 201 of different colors can be replaced, and the triangular magnetic plate 2 continues to be magnetically adsorbed, so that the color plate 201 can be distinguished from the color of the surrounding vegetation and landforms. In dim weather, the RGB lamp 302 can be used to emit lamps of different colors, so that cameras on different routes can capture image control point markings with bright colors, which can be used together with the auxiliary color plate 201.
[0027] In addition, the components designed in the present invention are all universal standard parts or components known to technical personnel in the field. Their structures and principles can be known to technical personnel through technical manuals or through conventional experimental methods. They can be fully implemented by technical personnel in the field, and there is no need to elaborate. The content protected by the present invention does not involve improvements to internal structures and methods.
[0028] The embodiments of the present invention disclose preferred embodiments, but are not limited thereto. A person skilled in the art can easily understand the spirit of the present invention based on the above embodiments and make different extensions and changes. However, as long as they do not deviate from the spirit of the present invention, they are all within the protection scope of the present invention.
Claims
1. An image control point marking device for low-altitude photogrammetry of an unmanned aerial vehicle, comprising a triangular magnetic plate (2), characterized in that: Also includes: A plurality of color plates (201) are attached to the top of the triangular magnetic plate (2); A quick-change mechanism is provided at the bottom of a plurality of color plates (201), the quick-change mechanism comprising a circular groove (202), a magnetic block (203) being installed inside the circular groove (202), a triangular magnetic plate (2) being attached to the bottom of the magnetic block (203), and the magnetic block (203) is magnetically connected to the triangular magnetic plate (2).
2. The image control point marking device for low-altitude photogrammetry of an unmanned aerial vehicle according to claim 1, characterized in that: The colors of the plurality of color plates (201) are composed of colors with relatively obvious color differences.
3. The image control point marking device for low-altitude photogrammetry of unmanned aerial vehicle according to claim 1, characterized in that: A support column (101) is fixed to the bottom of the triangular magnetic plate (2), and a plurality of connecting plate bodies (3) are fixed to the outer wall of the support column (101).
4. The image control point marking device for low-altitude photogrammetry of an unmanned aerial vehicle as claimed in claim 3, characterized in that: A square groove (301) is provided on the top of the connecting plate body (3), and an RGB lamp tube (302) is installed inside the square groove (301).
5. The image control point marking device for low-altitude photogrammetry of unmanned aerial vehicle according to claim 3, characterized in that: A fixing cylinder (1) is fixed at the bottom of the support column (101), and an industrial control computer (102) is installed at the front end of the fixing cylinder (1).
6. The image control point marking device for low-altitude photogrammetry of an unmanned aerial vehicle according to claim 5, characterized in that: A battery main body (103) is installed at the bottom of the fixing cylinder (1), and a USB charging port (104) is installed at the front end of the battery main body (103).