CN112752094B - Double-camera optical axis detection equipment - Google Patents
Double-camera optical axis detection equipment Download PDFInfo
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- CN112752094B CN112752094B CN202011586412.XA CN202011586412A CN112752094B CN 112752094 B CN112752094 B CN 112752094B CN 202011586412 A CN202011586412 A CN 202011586412A CN 112752094 B CN112752094 B CN 112752094B
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- 230000003287 optical effect Effects 0.000 title claims abstract description 49
- 238000001514 detection method Methods 0.000 title claims abstract description 28
- 238000004891 communication Methods 0.000 claims abstract description 12
- 238000000034 method Methods 0.000 claims description 13
- 230000009977 dual effect Effects 0.000 claims description 7
- 230000002146 bilateral effect Effects 0.000 claims description 2
- 238000007689 inspection Methods 0.000 claims 3
- 230000000694 effects Effects 0.000 description 11
- 238000003384 imaging method Methods 0.000 description 9
- 230000002159 abnormal effect Effects 0.000 description 3
- 230000001502 supplementing effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000012634 optical imaging Methods 0.000 description 2
- 230000008094 contradictory effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000003238 somatosensory effect Effects 0.000 description 1
Classifications
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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
Abstract
The application discloses a double-camera optical axis detection device, which comprises: the device comprises a device main body, an objective table, a calibration object and a communication device, wherein the device main body is provided with a test cavity; the objective table is arranged in the test cavity and is used for bearing and fixing the camera device to be tested; the calibration object is arranged on the side wall of the test cavity, is positioned on one side of the objective table and is used for shooting a test picture by a camera device to be tested, which is arranged on the objective table; the communication device is used for being in communication connection with the camera device to be tested, and transmitting the test picture shot by the camera device to be tested to the rear end. According to the technical scheme, the background is used for analyzing the to-be-detected image pickup device to shoot the test picture, so that the optical axis of the to-be-detected image pickup device is judged, and the efficiency and the accuracy of detecting the optical axis of the to-be-detected image pickup device are improved.
Description
Technical Field
The application relates to the technical field of optical axis detection of cameras, in particular to optical axis detection equipment with double cameras.
Background
In the technical field of optical imaging, the assembly of the camera has very high requirements on precision, once the camera is not assembled in the assembly process, the optical axis of the camera can deviate, particularly for equipment with double cameras, as long as the optical axis of one of the cameras deviates, the final imaging effect is far away from the imaging effect which is actually needed to be removed, therefore, after the double-camera product is assembled, the detection of the optical axis of the double-camera product is an indispensable process, the existing process is mainly finished by manual shooting, the retrieval process is complex, a large amount of manpower is needed, the detection efficiency is poor, and on the other hand, the manual shooting accuracy is low, so that misjudgment is easy to cause.
Disclosure of Invention
The application mainly aims to provide double-camera optical axis detection equipment, which aims to improve the detection efficiency and accuracy of double-camera optical axes.
In order to achieve the above object, a dual camera optical axis detection apparatus according to the present application includes:
an apparatus body having a test cavity;
the objective table is arranged in the test cavity and is used for bearing and fixing the camera device to be tested;
the calibration object is arranged on the side wall of the test cavity, is positioned on one side of the objective table and is used for shooting a test picture by a camera device to be tested, which is arranged on the objective table; the method comprises the steps of,
the communication device is used for being in communication connection with the camera device to be tested and transmitting the test picture shot by the camera device to be tested to the rear end.
Optionally, the calibration object includes two resolution test chart cards, and the two resolution test chart cards are both arranged on the side part of the test cavity and are arranged in an included angle;
the objective table is arranged in the included angle area of the two resolution test chart cards.
Optionally, the objective table is arranged opposite to the boundary line of the two resolution test cards.
Optionally, a distance between the objective table and an intersection line of the two resolution test cards is 0.8 m-1.2 m.
Optionally, the height of the objective table is 40% -60% of the height of the resolution test chart card.
Optionally, the included angle of the two resolution test cards is 90 °.
Optionally, the dual-camera optical axis detection device further includes a test light source, where the test light source is disposed in the test cavity and configured to project light to the calibration object.
Optionally, the test light source comprises a plurality of flexible lamps spaced apart.
Optionally, a clamping and positioning mechanism is disposed on the objective table, and the clamping and positioning mechanism is used for clamping and positioning the imaging device to be tested, where the clamping and positioning mechanism includes:
at least two positioning blocks which can be mutually close to or far away from each other; the method comprises the steps of,
and the air cylinder is connected with one of the positioning blocks so as to push the positioning blocks to move towards the other positioning block.
Optionally, the device further comprises a mounting groove arranged on the object stage, wherein the mounting groove is positioned between the two positioning blocks and is used for placing the to-be-detected image pickup device.
According to the technical scheme, the camera to be detected is positioned and placed on the objective table, the camera to be detected is controlled to shoot a calibration object, finally, a test picture shot by the camera to be detected is transmitted to the rear end through the communication device, the rear end analyzes the test picture, when the optical axis of a camera of the camera to be detected is normal, the shot picture is the same as a preset picture, and when the shot picture is different from the preset picture, the optical axis of the camera to be detected is judged to be abnormal, and adjustment is needed. According to the technical scheme, the optical axis of the to-be-detected camera device can be analyzed whether the optical axis is normal or not only by positioning the to-be-detected camera device on the objective table and shooting the calibration object, so that the efficiency and the accuracy of detecting the optical axis of the to-be-detected camera device are greatly improved.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic perspective view of an embodiment of a dual-camera optical axis detection apparatus provided by the present application;
fig. 2 is a schematic diagram of the internal structure of fig. 1.
Reference numerals illustrate:
| reference numerals | Name of the name | Reference numerals | Name of the name |
| 100 | Double-camera optical axis detection equipment | 10 | Device body |
| 20 | Object stage | 30 | Calibration object |
| 31 | Resolution test chart card | 40 | Test light source |
| 41 | Flexible lamp | 21 | Clamping and positioning mechanism |
| 22 | Mounting groove |
The achievement of the objects, functional features and advantages of the present application will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
It should be noted that, if directional indications (such as up, down, left, right, front, and rear … …) are included in the embodiments of the present application, the directional indications are merely used to explain the relative positional relationship, movement conditions, etc. between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are correspondingly changed.
In addition, if there is a description of "first", "second", etc. in the embodiments of the present application, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" as it appears throughout includes three parallel schemes, for example "A and/or B", including the A scheme, or the B scheme, or the scheme where A and B are satisfied simultaneously. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present application.
In the technical field of optical imaging, the assembly of the camera has very high requirements on precision, once the camera is not assembled in the assembly process, the optical axis of the camera can deviate, particularly for equipment with double cameras, as long as the optical axis of one of the cameras deviates, the final imaging effect is far away from the imaging effect which is actually needed to be removed, therefore, after the double-camera product is assembled, the detection of the optical axis of the double-camera product is an indispensable process, the existing process is mainly finished by manual shooting, the retrieval process is complex, a large amount of manpower is needed, the detection efficiency is poor, and on the other hand, the manual shooting accuracy is low, so that misjudgment is easy to cause.
In view of this, the present application provides a dual-camera optical axis detection apparatus 100, fig. 1 to 2 are diagrams illustrating an embodiment of the dual-camera optical axis detection apparatus 100 provided by the present application, please refer to fig. 1 to 2, the dual-camera optical axis detection apparatus 100 includes: the device comprises a device main body 10, an objective table 20, a calibration object 30 and a communication device, wherein the device main body 10 is provided with a test cavity; the objective table 20 is arranged in the test cavity, and the objective table 20 is used for bearing and fixing a camera device to be tested; the calibration object 30 is arranged on the side wall of the test cavity, and the calibration object 30 is arranged on one side of the objective table 20 and is used for shooting a test picture by a camera to be tested arranged on the objective table 20;
the communication device is used for being in communication connection with the camera device to be tested, and transmitting the test picture shot by the camera device to be tested to the rear end.
It should be noted that, the device main body 10 is provided with a test cavity, the subsequent detection work is performed in the test cavity, so that interference of the external environment to the detection work can be effectively prevented, and thus accuracy of a detection result is improved. In addition, an electronically controlled switch button may be provided to control the camera to be tested to automatically take a picture after the camera to be tested is positioned and placed on the stage 20.
According to the technical scheme, the camera to be detected is positioned and placed on the objective table 20, then the camera to be detected is controlled to shoot the calibration object 30, finally a test picture shot by the camera to be detected is transmitted to the rear end through the communication device, the rear end analyzes the test picture, when the optical axis of the camera to be detected is normal, the shot picture is the same as a preset picture, and when the shot picture is different from the preset picture, the optical axis of the camera to be detected is judged to be abnormal, and adjustment is needed. In the technical scheme of the application, the optical axis of the image pickup device to be detected can be analyzed by only positioning the image pickup device to be detected on the objective table 20 and shooting the calibration object 30, so that the efficiency and the accuracy of detecting the optical axis of the image pickup device to be detected are greatly improved.
In order to facilitate analysis of the optical axis of the camera device to be tested, the calibration object 30 includes two resolution test chart cards 31, where the two resolution test chart cards 31 are both disposed on the side of the test cavity and are disposed at an included angle; the objective table 20 is disposed in the included angle area of the two resolution test chart cards 31, the photographed resolution test chart cards 31 are bilaterally symmetrical, whether the optical axis of the camera is normal or not is easier to be judged, and the follow-up data support is also convenient for the calibration of the optical axis of the double cameras when the optical axis of the camera is abnormal.
Further, in order to enhance the effect of bilateral symmetry on the test pictures, the objective table 20 is disposed opposite to the boundary line between the two resolution test cards 31.
The subsequent calibration of the optical axes of the dual cameras needs to introduce the calculation of the coordinate system when calculating the optical axis deflection angles of the dual cameras, so that in order to facilitate the subsequent calculation of the optical axis deflection angles, the included angle of the two resolution test cards 31 is 90 degrees, so as to directly form a coordinate system, thereby facilitating the subsequent calculation of the optical axis deflection angles.
In addition, the calibration object 30 needs to be completely photographed by the calibration object 30, and the calibration object 30 preferably occupies more than 80 percent of the photo, and it can be understood that the larger the occupation ratio of the calibration object 30 is, the higher the detection accuracy is, and the technical scheme of the application is mainly used for detecting the optical axes of the dual cameras of the AR matched somatosensory camera product, so when the distance between the objective table 20 and the boundary line between the two resolution test chart cards 31 is 0.8 m-1.2 m, the calibration object 30 can be completely photographed by the photographing device to be tested in photographing test pictures, and the image occupation ratio of the calibration object 30 reaches more than eighty percent in photographing test pictures. Furthermore, the height of the objective table 20 also affects the final imaging effect, and the height of the objective table 20 cannot be too high or too low, otherwise the final imaging effect is affected, and after multiple experiments, it is found that the height of the objective table 20 is 40% -60% of the height of the resolution test chart 31, and the imaging effect is the best.
Because the whole detection process is performed in the test cavity, the imaging effect is affected to a certain extent by the dark environment in the cavity, a light source needs to be introduced, and the light source can be an external light source, such as light outside the cavity, a light source of the camera device to be detected, such as a flash lamp, or the like, or a light source arranged in the test cavity, and the dual-camera optical axis detection device 100 further comprises a test light source 40, wherein the test light source 40 is arranged in the test cavity and is used for projecting light to the calibration object 30, so that the surface illuminance and the Y value of the calibration object 30 meet the requirement of a test picture in consideration of poor light supplementing effect of the external light source on the calibration object 30.
Further, the test light source 40 includes a plurality of flexible lamps 41 distributed at intervals, and the light supplementing effect can be enhanced by a plurality of schemes, and the flexible lamps 41 are adopted, so that the angle of the projected light can be adjusted, the calibration object 30 is supplemented with light from different angles, and the light supplementing effect of the calibration object 30 is further improved.
The fixing manner of the stage 20 to the image capturing device to be tested may be various, such as magnetic attraction, clamping, screwing, etc., and is not limited herein, in order to realize stable and effective positioning, the stage 20 is provided with a clamping and positioning mechanism 21, and the clamping and positioning mechanism 21 is used for clamping and positioning the image capturing device to be tested, where the clamping and positioning mechanism 21 includes: the two positioning blocks and the air cylinder which can be mutually close to or far away from each other are connected with one positioning block so as to push the other positioning block to move towards the other positioning block, and the positioning can be stably and effectively realized in a clamping and positioning mode, and the two positioning blocks can also be suitable for the to-be-detected image pick-up devices with different specifications.
Further, in order to improve the fixing effect, the clamping and positioning mechanism 21 further includes a mounting groove 22 disposed on the objective table 20, where the mounting groove 22 is located between the two positioning blocks and is used for mounting the image capturing device to be tested, so as to further improve the fixing effect on the image capturing device to be tested.
The foregoing description is only of the preferred embodiments of the present application and is not intended to limit the scope of the application, and all equivalent structural changes made by the description of the present application and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the application.
Claims (7)
1. A dual camera optical axis detection apparatus, comprising:
an apparatus body having a test cavity;
the objective table is arranged in the test cavity and is used for bearing and fixing the camera device to be tested; the camera device to be detected is a double-camera device;
the calibration object is arranged on the side wall of the test cavity, is positioned on one side of the objective table and is used for shooting a test picture by a camera device to be tested, which is arranged on the objective table; the method comprises the steps of,
the communication device is used for being in communication connection with the camera to be tested, transmitting a test picture shot by the camera to be tested to the rear end, wherein the rear end is used for analyzing the test picture;
the calibration object comprises two resolution test chart cards which are arranged on the side part of the test cavity and are arranged in an included angle;
the object stage is arranged in an included angle area of the two resolution test chart cards;
the objective table is arranged opposite to the boundary line of the two resolution test chart cards, and the two resolution test chart cards are distributed in bilateral symmetry;
the included angle of the two resolution test chart cards is 90 degrees, so that a coordinate system is formed, and the coordinate system is used for calculating the deflection angle of the optical axis of the to-be-tested camera device.
2. The dual-camera optical axis detection apparatus according to claim 1, wherein a distance between the stage and an intersection line of the two resolution test chart cards is 0.8m to 1.2m.
3. The dual-camera optical axis detection apparatus according to claim 2, wherein the stage has a height of 40% -60% of the height of the resolution test chart.
4. The dual-camera optical axis detection apparatus as claimed in claim 1, further comprising a test light source disposed in the test cavity for projecting light toward the calibration object.
5. The dual camera optical axis inspection apparatus of claim 4 wherein said test light source comprises a plurality of spaced apart flexible lamps.
6. The dual camera optical axis inspection apparatus according to claim 1, wherein a clamp positioning mechanism is provided on the stage, the clamp positioning mechanism being for clamping and positioning the image pickup device to be inspected, wherein the clamp positioning mechanism includes:
at least two positioning blocks which can be mutually close to or far away from each other; the method comprises the steps of,
and the air cylinder is connected with one of the positioning blocks so as to push the positioning blocks to move towards the other positioning block.
7. The dual-camera optical axis inspection apparatus according to claim 6, wherein the clamping and positioning mechanism further comprises a mounting groove provided on the stage, the mounting groove being located between the two positioning blocks for placing the image pickup device to be inspected.
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| CN202011586412.XA CN112752094B (en) | 2020-12-28 | 2020-12-28 | Double-camera optical axis detection equipment |
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