3D modeling shooting device and 3D modeling shooting method

Abstract

The invention relates to a 3D modeling shooting device and a 3D modeling shooting method. The 3D modeling shooting device comprises an object carrying assembly which comprises an object carrying table, and the object carrying table comprises a first surface; the shooting assembly is arranged on one side of the objective table in the direction parallel to the first surface, and the shooting assembly comprises a shooting rod and a camera arranged on the shooting rod; the connecting assembly comprises a connecting rod, the connecting rod is connected between the object carrying assembly and the shooting rod, the end, close to the first surface, of the shooting rod is connected with the connecting rod, and the extending direction of the connecting rod is parallel to the first surface; wherein the objective table and the shooting rod can rotate relatively, and a rotating shaft is perpendicular to the first surface; the camera can ascend and descend in the direction perpendicular to the first surface. The distance from the end, connected with the connecting rod, of the shooting rod to the objective table can be adjusted through the connecting assembly. According to the invention, accurate acquisition data can be obtained for shot objects with different sizes.

Description

Technical Field

[0001] The present application relates to the technical field of photographing equipment, and in particular to a 3D modeling photographing device and a 3D modeling photographing method. Background Art

[0002] The object data collection method adopted by traditional 3D modeling data collection equipment is to set up multiple cameras on the upper inner walls of the four sides of the collection cylinder, install an electric rotating table in the center of the collection cylinder, place the object to be photographed on the electric rotating table, start the rotating table, and use the cameras on all sides to capture and collect data. However, when it comes to objects of different sizes, the captured data is not accurate enough.

[0003] Therefore, how to obtain accurate data for objects of different sizes is a technical problem that needs to be solved urgently. Summary of the invention

[0004] Based on this, it is necessary to provide a 3D modeling shooting device and a 3D modeling shooting method to solve the problem of how to obtain accurate acquisition data for objects of different sizes.

[0005] According to a first aspect of the present application, a 3D modeling shooting device is provided, comprising:

[0006] The object-carrying assembly comprises an object-carrying stage, wherein the object-carrying stage comprises a first surface for carrying an object to be photographed;

[0007] A shooting assembly is arranged on one side of the stage in a direction parallel to the first surface, the shooting assembly comprises a shooting rod and a camera arranged on the shooting rod, the camera corresponds to a side of the first surface for placing the photographed object;

[0008] A connecting assembly, comprising a connecting rod, wherein the connecting rod is connected between the object-carrying assembly and the shooting rod, an end of the shooting rod close to the first surface is connected to the connecting rod, and an extending direction of the connecting rod is parallel to the first surface;

[0009] Wherein, the stage and the shooting rod are relatively rotatable, and the rotation axis is perpendicular to the first surface;

[0010] The camera can be raised and lowered in a direction perpendicular to the first surface;

[0011] The distance between one end of the shooting rod connected to the connecting rod and the object platform can be adjusted by the connecting assembly.

[0012] In some embodiments, the stage can be rotatably arranged; or,

[0013] The shooting rod can be rotatably arranged around the object carrier.

[0014] In some embodiments, the shooting rod is a telescopic rod, and the camera is raised or lowered according to the length of the shooting rod after being extended or retracted; or

[0015] The height of the shooting rod is fixed, and the shooting assembly further comprises a lifting component movably connected to the shooting rod, and the camera can be lifted and lowered on the shooting rod through the lifting component.

[0016] In some embodiments, the connecting rod is a telescopic rod, and the distance from one end of the shooting rod connected to the connecting rod to the object platform can be increased or decreased by the length of the connecting rod after extension and retraction.

[0017] In some implementations, the minimum total distance that the camera is lifted and lowered on the shooting rod satisfies the following formula:

[0018] H2 ≥ h0-2D*Tan(θ / 2);

[0019] θ represents: the field of view of the camera;

[0020] D represents: the distance from the camera to the object in a direction parallel to the first surface;

[0021] H2 represents: the minimum total distance that the camera is lifted and lowered on the shooting rod;

[0022] h0 represents: the height of the object being photographed on the first surface.

[0023] In some embodiments, the minimum unit height for the camera to take a photo after rising or falling once on the shooting rod satisfies:

[0024] H3<2D*Tan(θ / 2);

[0025] θ represents: the field of view of the camera;

[0026] D represents: the distance from the camera to the object in a direction parallel to the first surface;

[0027] H3 represents: the minimum unit height for the camera to take a photo after rising or falling once on the shooting rod.

[0028] According to a second aspect of the present application, a 3D modeling shooting method is provided, which is applied to any one of the above-mentioned 3D modeling shooting devices, and the 3D modeling shooting method includes:

[0029] Providing a 3D modeling shooting device;

[0030] placing the object to be photographed on the first surface of the stage;

[0031] According to the height of the photographed object on the first surface, adjusting the height at which the camera can be raised and lowered on the shooting rod;

[0032] According to the length of the object to be photographed in a direction parallel to the first surface, adjusting the distance between the end of the shooting rod close to the first surface and the stage;

[0033] The camera photographs the object.

[0034] In some implementations, the step of photographing the object with the camera includes:

[0035] The camera is adjusted to a first height on the shooting rod, and the camera shoots a circle around the object;

[0036] The camera is adjusted to a second height on the shooting rod, and the camera shoots a circle around the object. The second height is different from the first height.

[0037] In some embodiments, it further comprises:

[0038] According to the height of the object on the first surface, the adjustable height of the camera on the shooting rod is divided into a plurality of height levels.

[0039] In some embodiments, it further comprises:

[0040] The minimum total distance for the camera to rise or fall is calculated according to the height of the photographed object on the first surface.

[0041] In the embodiment of the present application, the stage and the shooting rod can be relatively rotatable, and the rotation axis is perpendicular to the first surface; the camera can be raised and lowered in a direction perpendicular to the first surface; and the distance from one end of the shooting rod connected to the connecting rod to the stage can be adjusted by the connecting assembly. Thus, for objects of different sizes, the 3D modeling shooting device can adjust the height of the camera on the shooting rod according to the size of the object, and the 3D modeling shooting device can adjust the distance from one end of the shooting rod connected to the connecting rod (or the camera) to the stage (or the object) according to the size of the object, so that for objects of different sizes, the 3D modeling shooting device can obtain accurate shooting and acquisition data, ultimately improving the accuracy and delicacy of 3D modeling. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] In order to more clearly illustrate the technical solutions in the embodiments or exemplary embodiments of the present application, the drawings required for use in the description of the embodiments or exemplary embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0043] Figure 1 A first schematic diagram of a 3D modeling shooting device provided for some embodiments of the present application.

[0044] Figure 2 A second schematic diagram of a 3D modeling shooting device provided for some embodiments of the present application.

[0045] Figure 3 A third schematic diagram of a 3D modeling shooting device provided for some embodiments of the present application.

[0046] Figure 4 A fourth schematic diagram of a 3D modeling shooting device provided for some embodiments of the present application.

[0047] Figure 5 A fifth schematic diagram of a 3D modeling shooting device provided for some embodiments of the present application.

[0048] Figure 6 A schematic diagram of the first process steps of a 3D modeling shooting method provided in some embodiments of the present application.

[0049] Figure 7 A schematic diagram of the second process steps of a 3D modeling shooting method provided in some embodiments of the present application. DETAILED DESCRIPTION

[0050] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0051] In the description of the present application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0052] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0053] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0054] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0055] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only implementation method.

[0056] In the related art, when photographing objects of different sizes, the data collected by the shooting is not accurate enough.

[0057] Based on the above problems, the present application provides a 3D modeling shooting device and a 3D modeling shooting method.

[0058] Figure 1 A first schematic diagram of a 3D modeling shooting device provided for some embodiments of the present application. Figure 2 A second schematic diagram of a 3D modeling shooting device provided for some embodiments of the present application. Figure 3 A third schematic diagram of a 3D modeling shooting device provided for some embodiments of the present application. Figure 4 A fourth schematic diagram of a 3D modeling shooting device provided for some embodiments of the present application. Figure 5 A fifth schematic diagram of a 3D modeling shooting device provided for some embodiments of the present application. Figures 1 to 2 , indicating that adjustments have been made to the same subject. Figure 2 , Figure 3 Different subjects are shown. Figure 4 and Figure 5 The diagram illustrates some parameters of the 3D modeling shooting device.

[0059] First, see Figures 1 to 5The present application provides a 3D modeling shooting device 100, which includes a loading assembly 10, a shooting assembly 20, and a connecting assembly 30. The loading assembly 10 includes a loading platform 11, and the loading platform 11 includes a first surface 111 for loading an object 200; the shooting assembly 20 is arranged on one side of the loading platform 11 in a direction parallel to the first surface 111, and the shooting assembly 20 includes a shooting rod 201, and a camera 202 arranged on the shooting rod 201, and the camera 202 corresponds to a side of the first surface 111 for placing the object 200; the connecting assembly 30 includes a connecting rod 301, and the connecting rod 301 is connected to the loading platform 11. Between the component 10 and the shooting rod 201, one end of the shooting rod 201 close to the first surface 111 is connected to the connecting rod 301, and the extension direction of the connecting rod 301 is parallel to the first surface 111; wherein, the stage 11 and the shooting rod 201 can be relatively rotatably arranged, and the rotation axis is perpendicular to the first surface 111; the camera 202 can be raised and lowered in a direction perpendicular to the first surface 111; the distance from one end of the shooting rod 201 connected to the connecting rod 301 to the stage 11 can be adjusted by connecting the component 30.

[0060] For example, the camera 202 is located on the shooting rod 201 , and the shooting rod 201 is used to carry or hang the camera 202 .

[0061] For example, in some embodiments, the object-carrying assembly 10 may further include other components such as a motor, so that the object-carrying platform 11 and the shooting rod 201 can be relatively rotatable.

[0062] For example, in some embodiments, the object carrier assembly 10 may further include a support platform, which is disposed on a side of the object carrier 11 away from the first surface 111 , and the support platform may support the object carrier 11 .

[0063] For example, in some other embodiments, the photographing assembly 20 may further include other components such as a motor and wheels, so that the stage 11 and the photographing rod 201 can be relatively rotatable.

[0064] For example, the photographing component 20 enables the camera 202 to be raised and lowered in a direction perpendicular to the first surface 111 .

[0065] For example, the connection assembly 30 allows the distance between the end of the shooting rod 201 connected to the connection rod 301 and the object platform 11 to be adjustable.

[0066] For example, the camera 202 corresponds to a side of the first surface 111 on which the object 200 is placed, that is, the camera 202 can photograph the object 200 placed on the first surface 111 .

[0067] See also Figure 2 and Figure 3 , Figure 2It is shown that the object 200 is a human model. Figure 3 It is illustrated that the object 200 is a football. The 3D modeling shooting device 100 can adjust the height of the camera 202 on the shooting rod 201 according to the size of the object 200. The 3D modeling shooting device 100 can adjust the distance from one end of the shooting rod 201 connected to the connecting rod 301 (or the camera) to the stage 11 (or the object 200) according to the size of the object 200, so that the camera 202 is adjusted to an appropriate height relative to the size of the object 200, and the camera 202 is adjusted to an appropriate distance from the object 200. Therefore, for objects 200 of different sizes, the 3D modeling shooting device 100 can obtain accurate shooting and acquisition data to improve the accuracy and delicacy of 3D modeling.

[0068] In the embodiment of the present application, the stage 11 and the shooting rod 201 can be relatively rotatable, and the rotation axis is perpendicular to the first surface 111; the camera 202 can be raised and lowered in a direction perpendicular to the first surface 111; and the distance from one end of the shooting rod 201 connected to the connecting rod 301 to the stage 11 can be adjusted by the connecting assembly 30. Therefore, for objects 200 of different sizes, the 3D modeling shooting device 100 can adjust the height of the camera 202 on the shooting rod 201 according to the size of the object 200, and the 3D modeling shooting device 100 can adjust the distance from one end of the shooting rod 201 connected to the connecting rod 301 (or the camera) to the stage 11 (or the object 200) according to the size of the object 200, so that for objects 200 of different sizes, the 3D modeling shooting device 100 can obtain accurate shooting and collection data, and finally improve the accuracy and delicacy of 3D modeling.

[0069] In some embodiments, the stage 11 may be rotatable; or, the shooting rod 201 may be rotatable around the stage 11 .

[0070] For example, in some embodiments, the stage 11 can be rotatable, for example, the stage 11 can rotate counterclockwise, for example, the stage 11 can rotate clockwise, and the rotation axis of the stage 11 is perpendicular to the first surface 111. Figure 2 A transmission device such as a motor is provided below the middle loading platform so that the loading platform 11 can rotate.

[0071] For example, in some other embodiments, the shooting rod 201 can be rotatably arranged around the stage 11, for example, the shooting rod 201 can rotate counterclockwise around the stage 11, for example, the shooting rod 201 can rotate clockwise around the stage 11. The rotation axis of the shooting rod 201 rotating around the stage 11 is perpendicular to the first surface 111, for example, the rotation axis is parallel to the extension direction of the shooting rod 201. A transmission device, such as a motor and a wheel, can be provided at one end of the shooting rod 201 close to the first surface 111, so that the shooting rod 201 can rotate.

[0072] In some embodiments, the shooting rod 201 is a telescopic rod, and the camera 202 is raised or lowered according to the length of the shooting rod 201 after extension or retraction; or, the height of the shooting rod 201 is fixed, and the shooting assembly 20 also includes a lifting component movably connected to the shooting rod 201, and the camera 202 can be raised or lowered on the shooting rod 201 through the lifting component.

[0073] For example, in some embodiments, the shooting rod 201 is a telescopic rod, for example, the shooting rod 201 includes a first telescopic rod, a second telescopic rod, and a third telescopic rod. The diameter of the third telescopic rod is smaller than the diameter of the second telescopic rod, so that the third telescopic rod can be nested in the second telescopic rod; the diameter of the second telescopic rod is smaller than the diameter of the first telescopic rod, so that the second telescopic rod can be nested in the first telescopic rod. In addition, the first telescopic rod, the second telescopic rod, and the third telescopic rod are all provided with a plurality of through holes of equal diameter on the side wall. When the positions of the second telescopic rod and the third telescopic rod relative to the first telescopic rod are adjusted, the corresponding through holes are all in an aligned state, and the fixing effect of the telescopic assembly can be achieved by simply inserting the clamp into the interior of the telescopic rod through each through hole. In one embodiment, the length of the third telescopic rod is longer than the length of the second telescopic rod, so that the third telescopic rod can be extended from the second telescopic rod; the length of the second telescopic rod is longer than the length of the first telescopic rod, so that the second telescopic rod can be extended from the first telescopic rod. In this way, when the height of the telescopic rod is raised or lowered, different overlapping parts will appear between the first telescopic rod, the second telescopic rod, and the third telescopic rod. In this way, the telescopic rod of the shooting rod 201 is effectively reinforced, so that the telescopic rod of the shooting rod 201 itself has greater strength and good bending resistance.

[0074] For example, in some other embodiments, the height of the shooting rod 201 is fixed, and the shooting assembly 20 further includes a lifting component movably connected to the shooting rod 201, and the camera 202 can be lifted and lowered on the shooting rod 201 through the lifting component. The lifting component may include a fixing screw or a fixing buckle, or the lifting component may include a lifting motor and a pull rope, etc., which are not limited here.

[0075] In some embodiments, the connecting rod 301 is a telescopic rod, and the distance from one end of the shooting rod 201 connected to the connecting rod 301 to the object platform 11 can be increased or decreased by the length of the connecting rod 301 after extension or retraction.

[0076] For example, the connecting rod 301 is a telescopic rod, and the configuration of the connecting rod 301 is similar to the configuration of the telescopic rod of the shooting rod 201, which will not be described in detail here.

[0077] In some implementations, the minimum total distance that the camera 202 ascends or descends may be calculated according to the height of the object 200 on the first surface 111 .

[0078] For example, compare Figure 2 and Figure 3 Different sizes of objects 200 require different minimum total distances for the camera 202 to rise or fall. For objects 200 with a smaller height on the first surface 111, the minimum total distance for the camera 202 to rise or fall can be reduced, thereby improving the shooting rate, avoiding too many invalid shots, and avoiding too much invalid shots occupying too much camera memory.

[0079] In some embodiments, please combine Figure 4 , the minimum total distance of the camera 202 rising and falling on the shooting rod 201 satisfies the following formula:

[0080] H2 ≥ h0-2D*Tan(θ / 2);

[0081] θ represents: the field of view of the camera 202;

[0082] D represents: the distance from the camera 202 to the object 200 in a direction parallel to the first surface 111;

[0083] H2 represents: the minimum total distance of the camera 202 rising and falling on the shooting rod 201;

[0084] h0 represents the height of the object 200 on the first surface 111 .

[0085] For example, after the camera 202 is raised and lowered on the shooting rod 201 for a minimum total distance H2, the camera 202 can shoot all parts of the object 200, avoiding the lower part of the object 200 close to the first surface 111 from not being shot, or avoiding the upper part of the object 200 far from the first surface 111 from not being shot.

[0086] For example, Figure 4 As shown, the field of view of the camera 202 satisfies the formula (1): Tan (θ / 2) = (H1 / 2) / D. H1 represents the height of the object 200 within the shooting range of the camera 202 in the field of view direction.

[0087] For example, Figure 4 As shown, when the camera 202 moves, formula (2) is satisfied: H1+H2≥h0.

[0088] For example, Figure 4 As shown, according to formula (1) and formula (2), the formula can be obtained: H2≥h0-2D*Tan(θ / 2).

[0089] In some embodiments, Figure 5 As shown, the minimum unit height for the camera 202 to take a photo after rising or falling once on the shooting rod 201 satisfies:

[0090] H3<2D*Tan(θ / 2);

[0091] θ represents: the field of view of the camera 202;

[0092] D represents: the distance from the camera 202 to the object 200 in a direction parallel to the first surface 111;

[0093] H3 represents the minimum unit height for the camera 202 to take a picture after it rises or descends once on the shooting rod 201 .

[0094] For example, Figure 5 As shown, when the camera 202 rises on the shooting rod 201, it takes a picture every time it rises a minimum unit height.

[0095] For example, Figure 5 As shown, when the camera 202 descends on the shooting rod 201, it takes a picture every time it descends a minimum unit height.

[0096] For example, Figure 5 As shown, the camera 202 is at the first position 20a for the first shooting, and is at the second position 20b for the second shooting. The height difference between the first position 20a and the second position 20b is: the minimum unit height for the camera 202 to take a picture after rising or falling once on the shooting rod 201.

[0097] For example, Figure 5 As shown, the images captured twice at the first position 20a and the second position 20b need to at least partially overlap, that is, in the two shots at the first position 20a and the second position 20b, at least part of the object 200 is in the images captured twice, so that two or more shots can be combined into a complete 3D image of the object 200, so as to synthesize a continuous 3D image of the object 200.

[0098] See also Figure 6 and Figure 7 . Figure 6A schematic diagram of the first process steps of a 3D modeling shooting method provided in some embodiments of the present application. Figure 7 A schematic diagram of the second process steps of a 3D modeling shooting method provided in some embodiments of the present application.

[0099] The present application also provides a 3D modeling shooting method, which can be applied to any of the above-mentioned 3D modeling shooting devices 100, or the 3D modeling shooting method can be applied to any combination of the above-mentioned 3D modeling shooting devices 100. The 3D modeling shooting method includes: step S100, step S200, step S300, step S400 and step S500.

[0100] Step S100: providing a 3D modeling photographing device 100.

[0101] For example, the 3D modeling shooting device 100 includes a loading assembly 10, a shooting assembly 20, and a connecting assembly 30. The loading assembly 10 includes a loading platform 11, and the loading platform 11 includes a first surface 111 for carrying a photographed object 200; the shooting assembly 20 is arranged on one side of the loading platform 11 in a direction parallel to the first surface 111, and the shooting assembly 20 includes a shooting rod 201, and a camera 202 arranged on the shooting rod 201, and the camera 202 corresponds to a side of the first surface 111 for placing the photographed object 200; the connecting assembly 30 includes a connecting rod 301, and the connecting rod 301 is connected to the loading platform 111. Between the component 10 and the shooting rod 201, one end of the shooting rod 201 close to the first surface 111 is connected to the connecting rod 301, and the extension direction of the connecting rod 301 is parallel to the first surface 111; wherein, the stage 11 and the shooting rod 201 can be relatively rotatably arranged, and the rotation axis is perpendicular to the first surface 111; the camera 202 can be raised and lowered in a direction perpendicular to the first surface 111; the distance from one end of the shooting rod 201 connected to the connecting rod 301 to the stage 11 can be adjusted by connecting the component 30.

[0102] For example, a 3D modeling shooting device provided may be any one of the 3D modeling shooting devices 100 described above, or a 3D modeling shooting device provided may be a 3D modeling shooting device 100 combining any several of the features described above, and the features of the 3D modeling shooting device will not be described in detail herein.

[0103] In step S200 , the object 200 is placed on the first surface 111 of the stage 11 .

[0104] Step S300 , adjusting the height at which the camera 202 can be raised and lowered on the shooting rod 201 according to the height of the object 200 on the first surface 111 .

[0105] For example, adjusting the height at which the camera 202 can be raised and lowered on the shooting rod 201 includes: adjusting the minimum total distance H2 of the camera 202 raised and lowered on the shooting rod 201. The minimum total distance H2 of the camera 202 raised and lowered on the shooting rod 201 is described in the above-mentioned embodiment of the 3D modeling shooting device 100, which will not be described in detail here.

[0106] Step S400 , adjusting the distance between the end of the shooting rod 201 close to the first surface 111 and the stage 11 according to the length of the object 200 in a direction parallel to the first surface 111 .

[0107] For example, the distance between the end of the shooting rod 201 close to the first surface 111 and the stage 11 is adjusted, that is, the distance (D) between the camera 202 and the object 200 in a direction parallel to the first surface 111 is adjusted.

[0108] For example, in some embodiments, the distance from the camera 202 to the stage in a direction parallel to the first surface 111 is defaulted to: the distance (D) from the camera 202 to the object 200 in a direction parallel to the first surface 111 .

[0109] For example, adjusting the distance between the end of the shooting rod 201 close to the first surface 111 and the stage 11 can, on the one hand, make the distance between the camera 202 and the object 200 appropriate, so that the object 200 can be clearly and accurately imaged in the camera 202. On the other hand, adjusting the distance between the end of the shooting rod 201 close to the first surface 111 and the stage 11, combined with adjusting the height at which the camera 202 can be raised and lowered on the shooting rod 201, can enable the camera 202 to capture all parts of the object 200, thereby preventing the lower part of the object 200 close to the first surface 111 from not being captured, or preventing the upper part of the object 200 far from the first surface 111 from not being captured.

[0110] In step S500 , the camera 202 photographs the object 200 .

[0111] In some implementations, the step of photographing the object 200 by the camera 202 (step S500 ) includes: step 510 and step 520 .

[0112] Step 510, adjusting the camera 202 on the shooting rod 201 to a first height, and the camera 202 takes a circle around the object 200;

[0113] Step 520 , adjusting the camera 202 on the shooting rod 201 to be at a second height, the camera 202 shoots a circle around the object 200 , and the second height is different from the first height.

[0114] For example, steps 510 and 520 indicate that when the camera 202 rises on the shooting rod 201, it takes a picture every time it rises a minimum unit height. Alternatively, steps 510 and 520 indicate that when the camera 202 descends on the shooting rod 201, it takes a picture every time it descends a minimum unit height.

[0115] For example, the height difference between the second height and the first height is: a minimum unit height for the camera 202 to take a photo after the camera 202 rises or falls once on the shooting rod 201 .

[0116] For example, the camera 202 repeats step 510 and step 520 until the object 200 is completely photographed. For example, the camera 202 is adjusted to a first height on the shooting rod 201, and the camera 202 takes a circle around the object 200; the camera 202 is adjusted to a second height on the shooting rod 201, and the camera 202 takes a circle around the object 200, and the second height is different from the first height; the camera 202 is adjusted to a third height on the shooting rod 201, and the camera 202 takes a circle around the object 200, and the third height is different from the first height and the second height; the camera 202 is adjusted to a fourth height on the shooting rod 201, and the camera 202 takes a circle around the object 200, and the fourth height is different from the first height, the second height, and the third height.

[0117] For example, the height difference between the second height and the first height is a minimum unit height (H3) for the camera 202 to take a photo after the camera 202 rises or falls once on the shooting rod 201.

[0118] For example, every time the camera 202 rises or falls on the shooting rod 201 by a minimum unit height ( H3 ), the camera 202 captures a circle of images around the object 200 .

[0119] In some embodiments, Figure 7 As shown, the 3D modeling shooting method further includes step S600, and step S600 may be located between step S200 and step S500.

[0120] Step S600 , dividing the adjustable height of the camera 202 on the shooting rod 201 into a plurality of height levels according to the height of the object 200 on the first surface 111 .

[0121] For example, based on (calculated) the minimum total distance (H2) that the camera 202 is raised or lowered on the shooting rod 201, and the minimum unit height (H3) for the camera 202 to take a picture after rising or falling once on the shooting rod 201, the adjustable height of the camera 202 on the shooting rod 201 can be divided into multiple height levels.

[0122] Illustratively, the number of height levels N ≥ H2 / H3.

[0123] For example, when H2 / H3 is an integer, N=H2 / H3 may be satisfied.

[0124] For example, when H2 / H3 is not an integer, N>H2 / H3 may be satisfied, for example, N is equal to (H2 / H3) integer digits plus 1.

[0125] In some implementations, the 3D modeling shooting method further includes step S700 , and step S700 may be located between step S200 and step S500 .

[0126] Step S700, calculating the minimum total distance for the camera to rise or fall according to the height of the object on the first surface.

[0127] For example, compare Figure 2 and Figure 3 Different sizes of objects 200 require different minimum total distances for the camera 202 to rise or fall. For objects 200 with a smaller height on the first surface 111, the minimum total distance for the camera 202 to rise or fall can be reduced, thereby improving the shooting rate, avoiding too many invalid shots, and avoiding too much invalid shots occupying too much camera memory.

[0128] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0129] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A 3D modeling shooting device, characterized in that: include: The object-carrying assembly comprises an object-carrying stage, wherein the object-carrying stage comprises a first surface for carrying an object to be photographed; A shooting assembly is arranged on one side of the stage in a direction parallel to the first surface, the shooting assembly comprises a shooting rod and a camera arranged on the shooting rod, the camera corresponds to a side of the first surface for placing the photographed object; A connecting assembly, comprising a connecting rod, wherein the connecting rod is connected between the object-carrying assembly and the shooting rod, an end of the shooting rod close to the first surface is connected to the connecting rod, and an extending direction of the connecting rod is parallel to the first surface; Wherein, the stage and the shooting rod are relatively rotatable, and the rotation axis is perpendicular to the first surface; The camera can be raised and lowered in a direction perpendicular to the first surface; The distance between one end of the shooting rod connected to the connecting rod and the object platform can be adjusted by the connecting assembly.

2. The 3D modeling shooting device according to claim 1, characterized in that: The stage can be rotatably arranged; or, The shooting rod can be rotatably arranged around the object carrier.

3. The 3D modeling shooting device according to claim 1, characterized in that: The shooting rod is a telescopic rod, and the camera is raised or lowered according to the length of the shooting rod after being extended or retracted; or The height of the shooting rod is fixed, and the shooting assembly further comprises a lifting component movably connected to the shooting rod, and the camera can be lifted and lowered on the shooting rod through the lifting component.

4. The 3D modeling shooting device according to claim 1, characterized in that: The connecting rod is a telescopic rod, and the distance from one end of the shooting rod connected to the connecting rod to the object platform can be increased or decreased by the length of the connecting rod after extension and retraction.

5. The 3D modeling shooting device according to claim 1, characterized in that: The minimum total distance that the camera is lifted and lowered on the shooting rod satisfies the following formula: H2 ≥ h0-2D*Tan(θ / 2); θ represents: the field of view of the camera; D represents: the distance from the camera to the object in a direction parallel to the first surface; H2 represents: the minimum total distance that the camera is lifted and lowered on the shooting rod; h0 represents: the height of the object being photographed on the first surface.

6. The 3D modeling shooting device according to claim 1, characterized in that: The minimum unit height for the camera to take a photo after rising or falling once on the shooting rod satisfies: H3<2D*Tan(θ / 2); θ represents: the field of view of the camera; D represents: the distance from the camera to the object in a direction parallel to the first surface; H3 represents: the minimum unit height for the camera to take a photo after rising or falling once on the shooting rod.

7. A 3D modeling shooting method, characterized in that: Applied to the 3D modeling shooting device according to any one of claims 1 to 6, the 3D modeling shooting method comprises: Providing a 3D modeling shooting device; placing the object to be photographed on the first surface of the stage; According to the height of the photographed object on the first surface, adjusting the height at which the camera can be raised and lowered on the shooting rod; According to the length of the object to be photographed in a direction parallel to the first surface, adjusting the distance between the end of the shooting rod close to the first surface and the stage; The camera photographs the object.

8. The 3D modeling shooting method according to claim 7, characterized in that: The step of photographing the object with the camera comprises: The camera is adjusted to a first height on the shooting rod, and the camera shoots a circle around the object; The camera is adjusted to a second height on the shooting rod, and the camera shoots a circle around the object. The second height is different from the first height.

9. The 3D modeling shooting method according to claim 7, characterized in that: Also includes: According to the height of the photographed object on the first surface, the adjustable height of the camera on the shooting rod is divided into a plurality of height levels.

10. The 3D modeling shooting method according to claim 7, characterized in that: Also includes: The minimum total distance for the camera to rise or fall is calculated according to the height of the photographed object on the first surface.

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