Camera focusing test device

Abstract

The utility model relates to the technical field of test equipment, and provides a camera focusing test device, which comprises a shading box, and a light source, a background assembly, a test object, a shielding object and a supporting seat which are arranged in the shading box, the light source is used for providing lighting environments with different brightness in the shading box; the camera is rotatably arranged on the supporting seat, and the supporting seat is used for adjusting the position of the camera in the shading box; the supporting seat, the shielding object, the test object and the background assembly are sequentially arranged at intervals in the length direction of the shading box, and the shielding object and the test object can move in the width direction of the shading box; wherein at least one of the background component, the test object and the shielding object can change the color of one side facing the camera. According to the camera focusing test device provided by the utility model, the test factors are rich, and the influence factors of the focusing success rate of the camera are comprehensively considered.

Description

TECHNICAL FIELD

[0001] The utility model relates to test equipment technical field especially relates to a camera focusing test device. BACKGROUND

[0002] When camera shoots object, need to carry out automatic focusing, can pass through the picture that camera shoots and identify, pass through the clear degree of the picture that shoots and judge whether the camera focuses successfully.

[0003] Many factors influence the success rate of camera focusing, and are related to the setting position of camera, the attribute of test object and the attribute of shielding object. At present, the test factors of the focusing test device of camera are single, and the influence of test factors is not comprehensive enough. UTILITY MODEL CONTENT

[0004] The utility model provides a camera focusing test device to solve the problem that the test factors of the focusing test device of camera in prior art are single, and the influence of test factors is not comprehensive enough.

[0005] The utility model provides a camera focusing test device, include: light shield box and be located in the light source, background component, test object, shielding object and support seat of light shield box,

[0006] The light source is used for providing different brightness illumination environment in the light shield box, the camera is rotatably arranged on the support seat, and the support seat is used for adjusting the position of the camera in the light shield box.

[0007] The support seat, the shielding object, the test object and the background component are sequentially and spacedly arranged along the length direction of the light shield box, and the shielding object and the test object can move along the width direction of the light shield box.

[0008] Among at least one of the background component, the test object and the shielding object can change the color of the side facing the camera.

[0009] According to the camera focusing test device provided by the utility model, the support seat includes a first linear module and a second linear module.

[0010] The slide table of the first linear module is connected with the slide table of the second linear module, and the slide table of the first linear module is connected with the camera.

[0011] Among at least one of the background component, the test object and the shielding object can change the color of the side facing the camera.

[0012] The utility model provides a kind of camera focusing test device, the camera is rotatably arranged on the support seat around first vertical axis, and the optical axis of the camera is horizontally distributed.

[0013] According to the utility model provides a kind of camera focusing test device, third linear module is equipped in the light shield box, the slide of third linear module is connected with the test object, to drive the slide of third linear module moves along the width direction.

[0014] According to the utility model provides a kind of camera focusing test device, first rotary drive element is equipped on the slide of third linear module, and first rotary drive element is connected with the test object, to drive the test object rotates around second vertical axis;

[0015] Among them, the test object has multiple test surfaces arranged around the second vertical axis, and each test surface is marked with different colors.

[0016] According to the utility model provides a kind of camera focusing test device, the test object is a right prism, and each side of the right prism is the test surface.

[0017] According to the utility model provides a kind of camera focusing test device, the test object is equipped with multiple specifications, and the slide of third linear module can be detachably connected with any one of the test objects of multiple specifications.

[0018] According to the utility model provides a kind of camera focusing test device, the background component includes wall cloth, first winding assembly and second winding assembly.

[0019] The wall cloth is provided with multiple color areas, and the multiple color areas are sequentially connected along the extension direction of the wall cloth, and each color area is marked with different colors.

[0020] The first end of the wall cloth is wound on the first winding assembly, the second end of the wall cloth is wound on the second winding assembly, and the wall cloth is arranged towards the camera.

[0021] According to the utility model provides a kind of camera focusing test device, fourth linear module is installed in the light shield box, and the slide of fourth linear module is connected with the shelter to drive the slide of fourth linear module to move along the width direction.

[0022] According to the utility model provides a kind of camera focusing test device, the shelter is equipped with multiple specifications, and the slide of fourth linear module can be detachably connected with any one of the shelters of multiple specifications.

[0023] The light source is provided with multiple, and multiple light sources are arranged at intervals on the side wall of the light shielding box.

[0024] The camera focusing test device provided by the utility model, through setting light source, background component, test object, shelter and support seat in light shielding box, using light source to adjust the illumination value and color temperature in light shielding box, support seat, shelter, test object and background component are sequentially and intervally arranged along the length direction, shelter and test object move along the width direction, and the camera is rotatably arranged on the support seat, the support seat can adjust the position of the camera in the light shielding box, at least one of the background component, test object and shelter can change the color towards the camera, so that when the camera focusing test is carried out, the light source, background component, test object, shelter or various factors and properties of the camera can be changed, the focusing success rate of the camera under different conditions is tested, the tested factors are relatively rich, and the influence factors of the focusing success rate of the camera are relatively comprehensive. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to more clearly illustrate the technical scheme in the utility model or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description, and obviously, the drawings in the following description are some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0026] Figure 1 It is the top view of the camera focusing test device provided by the utility model.

[0027] Figure 2 It is the schematic view of the test surface of the test object towards the camera.

[0028] Figure 3 It is the structural schematic view of the background component provided by the utility model.

[0029] Reference signs:

[0030] 1, camera focusing test device;11, light shielding box;12, light source;13, background component;14, test object;15, shelter;16, support seat;17, third linear module;18, fourth linear module;131, wall cloth;132, first winding component;133, second winding component;161, first linear module;162, second linear module;

[0031] 2, camera;

[0032] Alpha, the rotation angle of the camera. DETAILED DESCRIPTION

[0033] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0034] The following is combined Figures 1-3 The camera focusing test device provided in this utility model will be described in detail through specific embodiments and application scenarios.

[0035] like Figure 1 As shown, this embodiment provides a camera focusing test device, including: a light shield 11 and a light source 12, a background component 13, a test object 14, a blocking object 15 and a support base 16 disposed in the light shield 11.

[0036] The light source 12 is used to provide lighting environments of different brightness inside the light-shielding box 11; the camera 2 is rotatably mounted on the support base 16, which is used to adjust the position of the camera 2 inside the light-shielding box 11.

[0037] The support base 16, the shield 15, the test object 14 and the background component 13 are arranged sequentially at intervals along the length of the light shield box 11, and the shield 15 and the test object 14 can both move along the width of the light shield box 11.

[0038] Among them, at least one of the background component 13, the test object 14 and the occluder 15 can change the color of the side facing the camera 2.

[0039] Understandably, the focus test of Camera 2 evaluates its focusing performance by detecting the image sharpness of objects at different distances, colors, and lighting conditions. The lens of Camera 2 can be considered a convex lens. When the test object 14 is located beyond twice the focal length of the lens, an inverted, reduced real image is formed on the imaging plane on the other side of the lens, and this real image can be captured by the sensor of Camera 2. The focusing process involves adjusting the distance between the lens and the sensor so that the image of the test object 14 falls clearly on the imaging plane of the sensor.

[0040] Many factors influence the focus test results of camera 2. Typically, contrast analysis of the captured image is used to evaluate focus success. The focus success rate of camera 2 is related to the background color, the area of ​​test object 14, the speed of movement of test object 14, the color of test object 14, the area of ​​obstruction 15, the color of obstruction 15, the speed of movement of obstruction 15, the light source 12, the lens angle of camera 2, and the imaging distance of camera 2. It is usually represented by the focus success rate function Wi (S, bi, ci, Vd, Va, F, L), which is directly proportional to the background color, the area of ​​test object 14, the color of test object 14, the area of ​​obstruction 15, the color of obstruction 15, and the light source 12, and inversely proportional to the speed of movement of test object 14, the speed of movement of obstruction 15, the lens angle of camera 2, and the imaging distance of camera 2.

[0041] In this embodiment, the focus testing device sets up a test object 14, a blocking object 15, a background component 13, a support base 16, and a light source 12 inside a light-shielding box 11, and mounts the camera 2 on the support base 16. The attribute values ​​of each factor are adjusted to obtain the focus success rate of each factor under a specific attribute.

[0042] Specifically, in this embodiment, the light-shielding box 11 is a sealed box structure to prevent external light from interfering with the light inside the light-shielding box 11 and affecting the focusing test results of the camera 2.

[0043] The light source 12 provides an illumination environment for the focus test of the camera 2. In this embodiment, the light source 12 can adjust the illuminance and color temperature values ​​to test the focus success rate of the camera 2 under different illuminance and color temperature values. The light source 12 can be directly mounted on the side wall of the light shield 11.

[0044] Background component 13 provides a single color for the focus test of camera 2. The background color can be any of red, orange, yellow, green, cyan, blue, purple, black or white. The background color can be switched as needed for the test.

[0045] Test object 14 is used to provide a focus target for camera 2, and the success rate of camera 2's focusing is evaluated by capturing the sharpness of test object 14. The attributes of test object 14 include the speed at which test object 14 moves along its width and the color of test object 14. Test object 14 can move along the width of light shield 11, and both the direction of movement and speed can be adjusted. Furthermore, the color of test object 14 can also be switched.

[0046] Optionally, one or more test objects 14 can be set. When only one test object 14 is set, it is used to detect the focusing success rate of the camera 2 on a single test object 14. When multiple test objects 14 are set, the camera 2 simultaneously adjusts its focus on multiple test objects 14, thus enabling the detection of the focusing success rate of the camera 2 on multiple test objects 14 simultaneously. This operation is suitable when the camera 2 takes a single photograph containing multiple objects that need to be clearly displayed in focus.

[0047] The obstruction 15 is used to simulate complex shooting environments, test the focusing success rate of the camera 2 under interference, and also test the adaptability of the camera 2 when the field of view is obstructed to varying degrees. The attributes of the obstruction 15 include the speed at which it moves along its width and its color. The obstruction 15 can move along the width of the light-blocking box 11, and both the direction and speed of movement can be adjusted. Furthermore, the color of the obstruction 15 can also be switched.

[0048] The support base 16 can adjust the position of the camera 2 inside the light shield 11, thereby adjusting the imaging distance of the camera 2. In addition, the camera 2 can also rotate relative to the support base 16 to adjust the shooting angle of the camera 2.

[0049] Adjusting various factors and attributes allows for both determining the optimal attribute values ​​for each factor and obtaining its extreme boundary values. During camera focusing testing, the movement speed of each factor can be set to zero for a fully static test; the movement speed of each factor can be kept constant while moving only the test object 14 or only the obstruction 15 at a time for a semi-dynamic test; or the movement speed of each factor can be kept constant while moving both the test object 14 and the obstruction 15, which can move synchronously or asynchronously for a fully dynamic test.

[0050] In practical applications, the light source 12, background component 13, test object 14, obstruction 15, and support base 16 are sequentially installed inside the light-shielding box 11, and the camera 2 is mounted on the support base 16. By changing the attribute value of one of the following factors—background color, the moving speed of the test object 14, the color of the test object 14, the color of the obstruction 15, the moving speed of the obstruction 15, the light source 12, the lens angle of the camera 2, and the imaging distance of the camera 2—the camera 2 is activated to capture an image of the test object 14. The sharpness of the captured image is then judged; images with a sharpness greater than a preset threshold are considered successfully focused, while those with a lower threshold are considered unsuccessful. This focusing test is repeated a certain number of times, and the ratio of the number of successful focuses to the total number of focuses is calculated and recorded as the focusing success rate under that factor.

[0051] Then, using the attribute value with the highest focus success rate under this factor, the attribute value of another factor in the focus testing device is changed, and the image is captured again to determine whether the focus is successful or not, in order to measure the focus success rate under the other factor. By changing the attribute values ​​of all factors, the combination of attribute values ​​with the highest focus success rate under all factors is finally obtained. The focus success rate of this combination is then tested to obtain the final focus success rate of camera 2.

[0052] The camera focusing test device 1 provided by this utility model sets up a light source 12, a background component 13, a test object 14, a blocking object 15, and a support base 16 inside a light-shielding box 11. The light source 12 is used to adjust the illuminance value and color temperature inside the light-shielding box 11. The support base 16, the blocking object 15, the test object 14, and the background component 13 are arranged sequentially at intervals along the length direction, and the blocking object 15 and the test object 14 are movable along the width direction. Furthermore, the camera 2 is rotatably mounted on the support base 16, and the support base 16 can adjust the position of the camera 2 inside the light-shielding box 11. At least one of the background component 13, the test object 14, and the blocking object 15 can change the color facing the camera 2. This allows for the modification of various factors and attributes of the light source 12, the background component 13, the test object 14, the blocking object 15, or the camera 2 during the focusing test of the camera 2, so as to test the focusing success rate of the camera 2 under different conditions. The test factors are relatively rich, and the consideration of the factors affecting the focusing success rate of the camera 2 is relatively comprehensive.

[0053] like Figure 1 As shown, the support base 16 in this embodiment includes: a first linear module 161 and a second linear module 162.

[0054] The slides of the first linear module 161 and the second linear module 162 are connected, and the slide of the first linear module 161 is connected to the camera 2.

[0055] The slide of the first linear module 161 moves along the length direction, and the slide of the second linear module 162 moves along the width direction.

[0056] Understandably, the camera 2 moves along the length direction under the drive of the slide of the first linear module 161 to adjust the distance between the camera 2 and the test object 14 along the length direction. Furthermore, the first linear module 161 moves along the width direction under the drive of the slide of the second linear module 162, thereby causing the camera 2 to move along the width direction to adjust the distance between the camera 2 and the test object 14 along the width direction.

[0057] This embodiment achieves the positional movement of the camera 2 along the length and width directions by setting a first linear module 161 and a second linear module 162 on the support base 16, and quickly adjusts the position of the camera 2 with good stability.

[0058] like Figure 1 As shown, in this embodiment, the camera 2 is rotatably mounted on the support base 16 around the first vertical axis, and the optical axis of the camera 2 is horizontally distributed.

[0059] Understandably, when camera 2 is facing the background component 13, the rotation angle of camera 2 is 0°. When camera 2 rotates around the first vertical axis, the counterclockwise rotation angle is negative, denoted as -α°, and the clockwise rotation angle is positive, denoted as +α°. The optical axis of camera 2 can be adjusted within ±α° in the horizontal plane.

[0060] like Figure 1 As shown, the light-shielding box 11 in this embodiment is provided with a third linear module 17. The slide of the third linear module 17 is connected to the test object 14 so as to drive the slide of the third linear module 17 to move along the width direction.

[0061] Understandably, the test object 14 moves along the width direction under the drive of the third linear module 17 in order to adjust the moving direction and speed of the test object 14.

[0062] Optionally, the number of slides in the third linear module 17 can be set according to the number of test objects 14. When there is one test object 14, there is also one slide in the third linear module 17. When there are multiple test objects 14, there are also multiple slides in the third linear module 17. The test objects 14 and the slides of the third linear module 17 are set in a one-to-one correspondence.

[0063] like Figure 1 As shown, the slide of the third linear module 17 in this embodiment is provided with a first rotary drive member. The first rotary drive member is connected to the test object 14 to drive the test object 14 to rotate around the second vertical axis.

[0064] The test object 14 has multiple test surfaces arranged around the second vertical axis, and each test surface is marked with a different color.

[0065] Understandably, in order to adjust the color attributes of the test object 14, the test object 14 has multiple test surfaces, each marked with a different color. When the first rotation drive drives the test object 14 to rotate around the second vertical axis, the test surfaces of different colors are oriented towards the camera 2, thereby adjusting the color attributes of the test object 14.

[0066] Since different test surfaces have different marking colors, it is simple and convenient to switch the color attribute of the test object 14 by rotating the test object 14, and it is easy to operate.

[0067] like Figure 2As shown, the test object 14 in this embodiment is a regular prism, and the side surfaces of each regular prism are test surfaces.

[0068] Understandably, the base of a regular prism is a regular polygon, therefore the areas of the lateral faces of the prism are all equal, meaning the areas of different test faces are equal, only the colors are different. This ensures that the only attribute to be adjusted for the test object 14 is color, without affecting the area size, thus ensuring the consistency of other attributes when adjusting the color attribute of the test object 14, and ensuring the reliability of the color attribute adjustment for the test object 14.

[0069] In one embodiment, the test object 14 is a regular hexagonal prism with six test faces of equal area, which can be set with six different identification colors.

[0070] like Figure 1 As shown, the test object 14 in this embodiment has multiple specifications, and the slide of the third linear module 17 can be detachably connected to any of the multiple specifications of the test object 14.

[0071] Understandably, multiple test objects 14 are provided, and the specifications of different test objects 14 are different, that is, the area of ​​the test objects 14 is different, so as to change the size attribute of the test objects 14 during the focusing test of the camera 2. The slide of the third linear module 17 in this embodiment can be detachably connected to any one of the test objects 14, which facilitates the manual replacement of the test objects 14 to change the size attribute of the test objects 14.

[0072] like Figure 1 and Figure 3 As shown, the background component 13 in this embodiment includes a wallpaper 131, a first winding component 132, and a second winding component 133.

[0073] The wallpaper 131 has multiple color areas, which are connected sequentially along the extension direction of the wallpaper 131, and each color area is marked with a different color.

[0074] The first end of the wallpaper 131 is wound around the first winding assembly 132, and the second end of the wallpaper 131 is wound around the second winding assembly 133. The wallpaper 131 is positioned facing the camera 2.

[0075] Understandably, since the wallpaper 131 has multiple color areas, the color of the color area facing the camera 2 can be switched by moving the color areas of the wallpaper 131. As the first winding assembly 132 rotates, one end of the wallpaper 131 is unfolded or folded, and the second winding assembly 133 rotates accordingly. In conjunction with the rotation of the first winding assembly 132, the wallpaper 131 is further unfolded or folded, causing the color of the side of the wallpaper 131 facing the camera 2 to change.

[0076] like Figure 1 As shown, a fourth linear module 18 is installed inside the light-shielding box 11 in this embodiment. The slide of the fourth linear module 18 is connected to the shield 15 to drive the slide of the fourth linear module 18 to move along the width direction.

[0077] Understandably, the obstruction 15 moves along the width direction under the drive of the fourth linear module 18 to adjust the moving direction and speed of the obstruction 15.

[0078] like Figure 1 As shown, the shield 15 in this embodiment has multiple specifications, and the slide of the fourth linear module 18 can be detachably connected to any of the shields 15 of the multiple specifications.

[0079] Understandably, multiple obstructions 15 are provided, and the specifications of different obstructions 15 are different, that is, the area of ​​the obstructions 15 is different, so as to change the size attribute of the obstruction 15 during the focus test of the camera 2. The slide of the fourth linear module 18 in this embodiment can be detachably connected to any one of the obstructions 15, so as to facilitate manual replacement of the obstruction 15 to change the size attribute of the obstruction 15.

[0080] Furthermore, the obstruction 15 can be made of different materials, such as transparent, semi-transparent, or opaque. By detachably connecting the obstruction 15 of different materials to the slide of the fourth linear module 18, the material properties of the obstruction 15 can be switched.

[0081] like Figure 1 As shown, this embodiment has multiple light sources 12, which are spaced apart on the side wall of the light shield 11.

[0082] Understandably, in order to enhance the adjustment effect of the light source 12, this embodiment provides multiple light sources 12. By changing the illumination position of the light source 12, the positional attributes of the light source 12 can be adjusted. Furthermore, the illuminance value and color temperature value of each light source 12 can be adjusted separately, achieving flexible adjustment of the light sources 12 within the light-shielding box 11.

[0083] This embodiment has eight light sources 12, which are divided into four groups. Each group contains two light sources 12. The four groups of light sources 12 are respectively located on the four side walls of the light shield 11, and the two light sources 12 in each group are arranged at intervals.

[0084] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A camera focus testing device, characterized in that, include: A light-shielding box and a light source, background assembly, test object, shielding object, and support base disposed within the light-shielding box; The light source is used to provide lighting environments of different brightness inside the light-shielding box; the camera is rotatably mounted on the support base, and the support base is used to adjust the position of the camera inside the light-shielding box; The support base, the shield, the test object, and the background component are arranged sequentially at intervals along the length of the light-shielding box, and both the shield and the test object are movable along the width of the light-shielding box. In this embodiment, at least one of the background component, the test object, and the obstruction is capable of changing the color of the side facing the camera.

2. The camera focus testing device according to claim 1, characterized in that, The support base includes: a first linear module and a second linear module; The slide of the first linear module is connected to the slide of the second linear module, and the slide of the first linear module is connected to the camera. The slide of the first linear module moves along the length direction, and the slide of the second linear module moves along the width direction.

3. The camera focus testing device according to claim 1, characterized in that, The camera is rotatably mounted on the support base around a first vertical axis, and the optical axis of the camera is horizontally distributed.

4. The camera focus testing device according to claim 1, characterized in that, The light-shielding box is equipped with a third linear module, and the slide of the third linear module is connected to the test object to drive the slide of the third linear module to move along the width direction.

5. The camera focus testing device according to claim 4, characterized in that, The slide of the third linear module is provided with a first rotary drive component, which is connected to the test object to drive the test object to rotate around the second vertical axis. The test object has multiple test surfaces arranged around the second vertical axis, and each test surface is marked with a different color.

6. The camera focus testing device according to claim 5, characterized in that, The test object is a regular prism, and the side surfaces of each regular prism are the test surfaces.

7. The camera focus testing device according to claim 4, characterized in that, The test object has multiple specifications, and the slide of the third linear module can be detachably connected to any of the test objects of multiple specifications.

8. The camera focus testing device according to claim 1, characterized in that, The background component includes a wallpaper, a first winding component, and a second winding component; The wallpaper has multiple color areas, which are connected sequentially along the extension direction of the wallpaper, and each color area is marked with a different color. The first end of the wallpaper is wound around the first winding assembly, and the second end of the wallpaper is wound around the second winding assembly. The wallpaper is positioned facing the camera.

9. The camera focus testing device according to claim 1, characterized in that, A fourth linear module is installed inside the light-shielding box. The slide of the fourth linear module is connected to the shielding object to drive the slide of the fourth linear module to move along the width direction.

10. The camera focus testing device according to claim 9, characterized in that, The shielding object is available in various sizes, and the slide of the fourth linear module can be detachably connected to any of the shielding objects of various sizes.

11. The camera focus testing device according to claim 1, characterized in that, The light source is provided in multiple locations, and the multiple light sources are arranged at intervals on the side wall of the light-shielding box.

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