CN112468802A - Camera homogeneity test auxiliary device - Google Patents
Camera homogeneity test auxiliary device Download PDFInfo
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- CN112468802A CN112468802A CN202011219903.0A CN202011219903A CN112468802A CN 112468802 A CN112468802 A CN 112468802A CN 202011219903 A CN202011219903 A CN 202011219903A CN 112468802 A CN112468802 A CN 112468802A
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- camera
- light source
- auxiliary device
- spherical light
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N17/00—Diagnosis, testing or measuring for television systems or their details
- H04N17/002—Diagnosis, testing or measuring for television systems or their details for television cameras
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Abstract
The invention discloses an auxiliary device for testing the uniformity of a camera, which is used for placing the camera in a preset position of a spherical light source generating device. Camera homogeneity test auxiliary device includes: the device comprises a base, a bracket and a clamping mechanism, wherein the base is provided with an avoidance hole for aligning with an opening of the spherical light source generating device; the bracket is arranged on the base and extends along the vertical direction; the clamping mechanism is arranged on the support and used for clamping the camera to be detected, and the clamping mechanism can be arranged in a movable mode in the vertical direction, so that the camera to be detected can enter a preset position in the inner cavity or move out of the inner cavity through the avoiding hole. The camera uniformity test auxiliary device provided by the invention has the advantages that the repeatability of a camera uniformity test is better, and the error of a test result is smaller.
Description
Technical Field
The invention relates to the technical field of camera testing, in particular to an auxiliary device for camera uniformity testing.
Background
The performance of the imaging quality of the vehicle-mounted camera can be effectively evaluated through the uniformity of color and brightness, and the method has important reference significance in the development of cameras and 360-degree panoramic products. At present, a spherical light source is mainly adopted for uniformity test, so that a camera to be tested is in a uniform irradiation environment. In the process of using the spherical light source to test the optical uniformity of the vehicle-mounted camera, the camera needs to be accurately placed at a preset position in the spherical light source, so that the camera is in a uniform irradiation environment, and then uniformity test is carried out, but the spherical light source only has a unique upward opening and is difficult to accurately position.
At present, the camera is placed into the spherical light source and mainly manually operated, the camera is directly stretched into the spherical light source by using a clamp, the preset position is determined by means of proficiency of an operator and a camera imaging result, the test positions of multiple tests are difficult to ensure to be the same, the repeatability is poor, and therefore the error of the test result is large.
Disclosure of Invention
The invention mainly aims to provide an auxiliary device for testing the uniformity of a camera, and aims to solve the problem of poor test repeatability of the existing spherical light source for testing the uniformity of the camera.
In order to achieve the above object, the present invention provides an auxiliary device for testing uniformity of a camera, which is used to place the camera at a preset position of a spherical light source generating device, wherein the spherical light source generating device has an inner cavity with an upward opening, and the auxiliary device for testing uniformity of the camera includes:
the base is provided with an avoidance hole which is used for aligning with the opening of the spherical light source generating device;
the bracket is arranged on the base and extends along the vertical direction; and the number of the first and second groups,
the clamping mechanism is arranged on the support and used for clamping the camera to be detected, and the clamping mechanism is movably arranged in the vertical direction, so that the camera to be detected can enter the preset position in the inner cavity or move out of the inner cavity through the avoiding hole.
Optionally, the clamping mechanism comprises:
the clamping arm extends along the vertical direction, and the lower end of the clamping arm is used for clamping the camera to be detected; and the number of the first and second groups,
one end of the connecting piece is connected with the bracket, and the other end of the connecting piece is connected with the upper end of the clamping arm;
wherein the clamping arm and/or the connecting piece are movably arranged along the up-down direction.
Optionally, the connecting member is movably disposed in an up-down direction.
Optionally, one of the bracket and the connecting member is provided with a slide rail, and the other is provided with a slide groove, wherein the slide groove is used for being matched with the slide rail, so that the connecting member moves up and down.
Optionally, a sliding rail is arranged on the bracket, and a rack extending in the up-down direction is arranged on the sliding rail;
the connecting piece is provided with a sliding groove, a gear is installed in the sliding groove, and the gear is meshed with the rack.
Optionally, the clamping mechanism further comprises a knob, and the knob is fixedly connected with the central shaft of the gear.
Optionally, the axis of the gripping arm is collinear with the centerline of the avoidance hole.
Optionally, the bracket has a first side surface facing the connecting member, and a second side surface adjacent to the first side surface, and the second side surface is provided with scale marks.
Optionally, the connecting piece has a third side facing the bracket and a fourth side adjacent to the third side, and the fourth side is marked with a secondary scale.
Optionally, a positioning portion is arranged on the base, and the positioning portion is used for being matched with the spherical light source generating device for positioning, so that the avoiding hole is aligned with the opening.
According to the technical scheme, the camera uniformity test auxiliary device comprises a base, a support and a clamping mechanism, wherein an avoiding hole is formed in the base and is aligned with an opening of the spherical light source generating device, the support is arranged on the base and extends in the vertical direction, and the clamping mechanism is arranged on the support and can be movably arranged in the vertical direction. In this way, the avoidance hole is aligned with the opening of the spherical light source generating device, then the clamping mechanism clamps the camera to be detected to move downwards so as to enter a preset position in the inner cavity of the spherical light source generating device through the avoidance hole, and then the uniformity test is carried out; meanwhile, the downward movement distance of the clamping mechanism can be visually observed and recorded, so that the consistency of repeated tests is better, and the error of the uniformity test result of the camera is smaller.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an embodiment of an auxiliary device for testing uniformity of a camera according to the present invention;
fig. 2 is a schematic structural diagram of the camera uniformity test auxiliary device provided in fig. 1 during operation;
FIG. 3 is a side view of the camera uniformity testing aid provided in FIG. 1;
fig. 4 is a top view of the camera uniformity test assisting device provided in fig. 1.
The reference numbers illustrate:
| reference numerals | Name (R) | Reference numerals | Name (R) |
| 100 | Camera homogeneity test |
32 | Connecting |
| 1 | Base seat | 320 | |
| 11 | Avoiding |
33 | |
| 12 | Positioning |
34 | |
| 2 | |
400 | Spherical light source generating device |
| 21 | |
4 | |
| 210 | |
41 | Opening of the |
| 22 | |
42 | |
| 3 | |
5 | |
| 31 | Clamping arm |
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indications are changed accordingly.
In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" appearing throughout includes three juxtapositions, exemplified by "A and/or B" including either A or B or both A and B. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
At present, the camera is placed into the spherical light source and mainly manually operated, the camera is directly stretched into the spherical light source by using a clamp, the preset position is determined by means of proficiency of an operator and a camera imaging result, the consistency of the positioning position of the camera for multiple tests is difficult to ensure, and therefore the error of the test result is large.
In view of this, the present invention provides an auxiliary device for testing uniformity of a camera, which is used to place the camera at a preset position of a spherical light source generating device, wherein the spherical light source generating device has an inner cavity with an upward opening. Fig. 1 to 4 are diagrams illustrating an embodiment of an auxiliary device for testing uniformity of a camera according to the present invention.
Referring to fig. 1 and 2, the camera uniformity testing assisting apparatus 100 includes: the spherical light source generating device comprises a base 1, a support 2 and a clamping mechanism 3, wherein an avoiding hole 11 is formed in the base 1 and used for aligning with an opening 41 of the spherical light source generating device 400; the bracket 2 is arranged on the base 1 and extends along the vertical direction; the clamping mechanism 3 is arranged on the support 2, the clamping mechanism 3 is used for clamping a camera 5 to be detected, and the clamping mechanism 3 can be movably arranged along the vertical direction, so that the camera 5 to be detected can enter a preset position in the inner cavity 4 or move out of the inner cavity 4 through the avoiding hole 11.
In the technical scheme of the invention, firstly, the avoidance hole 11 corresponds to the opening 41 of the spherical light source generating device 400, then the clamping mechanism 3 clamps the camera 5 to be detected to move downwards so as to enter a preset position in the inner cavity 4 of the spherical light source generating device 400 through the avoidance hole 11, and then the uniformity test is carried out; meanwhile, the downward movement distance of the clamping mechanism 3 can be visually observed and recorded, so that the consistency of the test positions of repeated tests is better, and the error of the uniformity test result of the camera 5 is smaller.
It should be noted that the inner cavity 4 is an inner cavity 4 of the spherical light source, the preset position generally refers to a spherical center position of the spherical light source, when the camera 5 is located at the spherical center position, the spherical light source provides light sources with uniform color and brightness, so that the camera 5 to be detected can receive light irradiation with uniform directions, and then color and brightness values of various points in the screen are analyzed through a professional algorithm to generate a brightness map with uniform uniformity and the like, so that the test result is accurate. In addition, the ball-type light source generating device 400 of the present invention is only one embodiment of the device with the ball-type light source, but is not limited thereto, and other devices with the ball-type light source may be adopted, and then the camera uniformity testing auxiliary device 100 of the present invention is adjusted accordingly. Therefore, the camera uniformity test auxiliary device 100 which is simply adapted to correspond to the spherical light source device according to the principle of the present invention is within the protection scope of the present invention.
Specifically, referring to fig. 2 to 4, the clamping mechanism 3 includes a clamping arm 31 and a connecting member 32, the clamping arm 31 extends in the vertical direction, and the lower end of the clamping arm 31 is used for clamping the camera 5 to be detected; one end of the connecting piece 32 is connected with the bracket 2, and the other end is connected with the upper end of the clamping arm 31. The present invention is not limited to which part of the clamping mechanism 3 can move up and down, and the clamping arm 31 may be disposed movably up and down, the connecting member 32 may be disposed movably up and down, or both the clamping arm 31 and the connecting member 32 may be disposed movably up and down.
Further, in order to facilitate observation of the moving distance of the gripping mechanism 3, in the present embodiment, the link 32 is movably provided in the up-down direction. Thus, the moving distance of the clamping mechanism 3 can be obtained by observing and recording the moving distance of the connecting piece 32 on the bracket 2.
In order to realize the movement of the connecting member 32 in the up-down direction, in this embodiment, one of the bracket 2 and the connecting member 32 is provided with a slide rail 21, and the other is provided with a slide groove 320, so that the connecting member 32 can move in the up-down direction of the bracket 2 by the cooperation of the slide groove 320 and the slide rail 21.
The present invention is not limited to the specific implementation manner of fixing the clamping mechanism 3 at a certain position of the bracket 2, and the connecting member 32 and the bracket 2 may be connected by a locking member, the connecting member 32 is fixed on the bracket 2 by the locking force of the locking member, and the locking force is small, so that when an external force is applied, the connecting member 32 can move up and down. In this embodiment, the bracket 2 is provided with a slide rail 21, the slide rail 21 is provided with a rack 210 extending in the vertical direction, the connecting member 32 is provided with a slide groove 320, and a gear (not shown) is installed in the slide groove 320 and is used for being engaged with the rack 210. The connecting member 32 can be fixed at any position of the bracket 2 by the engaging force of the rack 210 and the gear, and the connecting member 32 is moved up and down along the bracket 2 by an external force. In order to increase the engaging force of the rack and pinion 210, a helical gear is used as the gear, and the rack 210 is also correspondingly a helical rack 210. In addition, the connecting piece 32 and the main body of the clamping arm 31 are made of plastic materials, so that the weight is light, and the clamping mechanism 3 is favorably fixed on the support 2.
Further, in order to adjust the up-and-down movement of the connecting member 32 along the bracket 2, the clamping mechanism 3 further includes a knob 33, and the knob 33 is fixedly connected to a central axis of the gear, so that the gear can move up or down along the rack 210 by the rotation direction of the knob 33, and the connecting member 32 can move up and down along the bracket 2. The specific arrangement of the knob 33 is not limited in the present invention, and the knob 33 may be integrally arranged with the central shaft of the gear, or may be an external knob 33 fixedly connected with the central shaft of the gear.
In order to obtain a specific value of the moving distance of the clamping mechanism 3 to the position of the center of sphere of the ball-type light source, in this embodiment, the bracket 2 specifically faces a first side surface of the connecting member 32, and a second side surface adjacent to the first side surface, and the second side surface is provided with scale marks 22. Therefore, the moving distance can have a specific numerical value, the accuracy is higher, and the consistency of multiple tests is better. It will be appreciated that the second side is coplanar with the knob 33 for easy viewing of the graduation marks 22. In addition, the present invention does not limit the division value of the graduation lines 22, and the division value of the graduation lines 22 is 2mm in this embodiment, according to the actual requirement.
Further, in order to make the reading of a specific value of the displacement distance more accurate, the connecting element 32 has a third side facing the stand 2 and a fourth side adjoining the third side, which fourth side is marked with a secondary scale 34. In this way, the scale value of the graduation mark 22 on the support 2 can be better read by taking the secondary graduation 34 as a reference point. The fourth side is preferably the same plane as the knob 33 for the reasons described above, which are not described herein. In the present embodiment, the division value of the sub scale 34 is also 2 mm.
The invention does not limit whether the clamping mechanism 3 can move left and right, and can move left and right for the clamping mechanism 3, so that the clamping mechanism 3 can clamp the camera 5 to be detected to move left and right and up and down to reach the spherical center position of the spherical light source, but in this way, the adjustment is troublesome, and the position of the camera 5 cannot be observed well after entering the spherical light source, therefore, in the embodiment, the axis of the clamping arm 31 is collinear with the central line of the avoidance hole 11. That is, the axis of the grip arm 31 is collinear with the vertical direction of the position of the center of sphere of the ball-type light source. Therefore, the spherical center position of the spherical light source can be reached only by adjusting the vertical direction of the clamping mechanism 3, the adjustment is convenient, the operability is good, the human error can be reduced, and the method is more accurate. Specifically, the axis of the gripping arm 31 is collinear with the centerline of the avoidance hole 11 by the length of the connecting member 32. The length of the connecting member 32 is not limited in the present invention, and is determined according to the size of the actual spherical light source.
In addition, a positioning portion 12 is arranged on the base 1, and the positioning portion 12 is matched with the spherical light source generating device 400 for positioning, so that the avoiding hole 11 is aligned with the opening 41. Specifically, the spherical light source generating device 400 has an engaging portion 42 engaged with the positioning portion 12, and the engaging portion 42 is a structure of the spherical light source generating device 400 itself and is used for engaging with a cover body to cover the spherical light source. The positioning portion 12 is designed correspondingly according to the matching portion 42, so that the positioning hole is aligned with the opening 41.
The following provides a specific embodiment of the camera uniformity test assisting apparatus 100 according to the present invention: (1) before detecting the camera 5 to be detected, the sensor is clamped by the clamping arm 31, the sensor is moved to be flush with the opening 41 of the spherical light source generating device 400, and the position H of the scale mark 22 on the bracket 2 corresponding to the connecting piece 32 at the moment is recorded; then, the knob 33 is rotated to make the connecting member 32 drive the clamping arm 31 to move downwards into the spherical light source until the sensor senses that the distances from any three directions of the inner wall of the spherical light source to the sensor are the same, and the position h of the scale mark 22 corresponding to the connecting member 32 at the moment is recorded. (2) When the uniformity of the camera 5 to be detected needs to be tested, the clamping arm 31 clamps the camera 5, then the connecting piece 32 is moved to a position flush with the opening 41 of the spherical light source generating device 400, and then is moved downwards by an H-H distance to reach the center of the sphere of the spherical light source, and then uniformity detection is performed. Therefore, each subsequent test only needs to repeat the step (2), and the reliability and consistency are high.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. The utility model provides a camera homogeneity test auxiliary device for put into spherical light source generating device's default position with the camera, spherical light source generating device has opening inner chamber up, its characterized in that, camera homogeneity test auxiliary device includes:
the base is provided with an avoidance hole which is used for aligning with the opening of the spherical light source generating device;
the bracket is arranged on the base and extends along the vertical direction; and the number of the first and second groups,
the clamping mechanism is arranged on the support and used for clamping the camera to be detected, and the clamping mechanism is movably arranged in the vertical direction, so that the camera to be detected can enter the preset position in the inner cavity or move out of the inner cavity through the avoiding hole.
2. The camera uniformity test aid of claim 1, wherein said fixture comprises:
the clamping arm extends along the vertical direction, and the lower end of the clamping arm is used for clamping the camera to be detected; and the number of the first and second groups,
one end of the connecting piece is connected with the bracket, and the other end of the connecting piece is connected with the upper end of the clamping arm;
wherein the clamping arm and/or the connecting piece are movably arranged along the up-down direction.
3. The camera uniformity test auxiliary device of claim 2, wherein said connecting member is movably disposed in an up-down direction.
4. The camera uniformity testing auxiliary device of claim 3, wherein one of said support and said connecting member is provided with a slide rail, and the other is provided with a slide groove, said slide groove is adapted to cooperate with said slide rail to move said connecting member in an up-and-down direction.
5. The camera uniformity test auxiliary device according to claim 4, wherein a slide rail is arranged on the bracket, and a rack extending in the up-down direction is arranged on the slide rail;
the connecting piece is provided with a sliding groove, a gear is installed in the sliding groove, and the gear is meshed with the rack.
6. The camera uniformity test aid of claim 5, wherein said clamping mechanism further comprises a knob, said knob being fixedly connected to a central shaft of said gear.
7. The camera uniformity test aid of claim 2, wherein an axis of said clamp arm is collinear with a centerline of said relief hole.
8. The camera uniformity testing aid of claim 2 wherein said frame has a first side facing said attachment member and a second side adjacent said first side, said second side having graduation marks.
9. The camera uniformity testing aid of claim 8 wherein said attachment member has a third side facing said frame and a fourth side adjacent said third side, said fourth side having a secondary scale marked thereon.
10. The camera uniformity test auxiliary device of claim 1, wherein the base is provided with a positioning portion for positioning in cooperation with the spherical light source generating device, so that the avoiding hole is aligned with the opening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011219903.0A CN112468802A (en) | 2020-11-04 | 2020-11-04 | Camera homogeneity test auxiliary device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011219903.0A CN112468802A (en) | 2020-11-04 | 2020-11-04 | Camera homogeneity test auxiliary device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112468802A true CN112468802A (en) | 2021-03-09 |
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ID=74824873
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011219903.0A Pending CN112468802A (en) | 2020-11-04 | 2020-11-04 | Camera homogeneity test auxiliary device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112468802A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114820623A (en) * | 2022-06-30 | 2022-07-29 | 鲁冉光电(微山)有限公司 | Imaging quality detection method for vehicle-mounted camera |
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| CN206532077U (en) * | 2017-02-14 | 2017-09-29 | 歌尔股份有限公司 | The test device of full-view camera |
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