CN111787317A - Camera testing device and camera testing method - Google Patents
Camera testing device and camera testing method Download PDFInfo
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- CN111787317A CN111787317A CN202010826161.1A CN202010826161A CN111787317A CN 111787317 A CN111787317 A CN 111787317A CN 202010826161 A CN202010826161 A CN 202010826161A CN 111787317 A CN111787317 A CN 111787317A
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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 disclosure relates to the technical field of camera shooting, in particular to a camera testing device and a camera testing method. This camera testing arrangement can include: the first jig is provided with a placing groove and a camera hole communicated with the placing groove, the electronic equipment with a camera is placed in the placing groove, and the position of the camera hole can correspond to the position of the camera; the second jig comprises a graphic card placing area for placing the test graphic card, and the position of the graphic card placing area corresponds to the position of the camera shooting hole; the first jig and the second jig can move relatively in the axial direction of the camera hole; when the first jig and the second jig move relatively in the axial direction of the image pick-up hole, a camera of the electronic equipment located in the placing groove shoots the test graphic card located on the graphic card placing area in real time through the image pick-up hole. The camera testing device has the characteristics of simple structure, convenience in operation, low cost and the like.
Description
Technical Field
The disclosure relates to the technical field of camera shooting, in particular to a camera testing device and a camera testing method.
Background
With the development of electronic devices such as mobile phones, electronic devices are used more and more frequently to photograph, and users have higher and higher requirements for the photographing effect of the electronic devices. The camera testing process is added in the factory manufacturing process in order to guarantee the shooting quality of the electronic equipment, but the equipment used for testing the camera at present is complex, high in cost and small in application range.
It is to be noted that the information disclosed in the above background section is only for enhancement of understanding of the background of the present disclosure, and thus may include information that does not constitute prior art known to those of ordinary skill in the art.
Disclosure of Invention
The camera testing device and the camera testing method have the advantages of being simple in structure, convenient to operate, low in cost and the like.
A camera testing device, comprising:
the first jig is provided with a placing groove and a camera hole communicated with the placing groove, the placing groove is used for placing electronic equipment with a camera, and the position of the camera hole can correspond to the position of the camera; and
the second jig comprises a graphic card placing area for placing a test graphic card, and the position of the graphic card placing area corresponds to the position of the camera shooting hole;
the first jig and the second jig can move relatively in the axial direction of the camera hole; when the first jig and the second jig move relatively in the axial direction of the camera shooting hole, a camera of the electronic equipment located in the placing groove shoots a test graphic card located on the graphic card placing area in real time through the camera shooting hole.
A camera testing method is applied to the aforementioned camera testing device, and the camera testing method comprises the following steps:
placing the test graphic card in a graphic card placing area of the second jig;
aligning a camera of the electronic equipment with a camera hole of the first jig, and placing the electronic equipment in a placing groove of the first jig;
opening a camera of the electronic equipment so as to enable the camera to be in a shooting state;
driving the first jig and/or the second jig to enable the first jig and the second jig to move relatively in the axial direction of the camera hole;
reading a focus value of a current picture shot by the camera in a moving process in real time by using the electronic equipment;
and determining the analytic force of the camera according to all the focus values read by the electronic equipment.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure. It is to be understood that the drawings in the following description are merely exemplary of the disclosure, and that other drawings may be derived from those drawings by one of ordinary skill in the art without the exercise of inventive faculty.
Fig. 1 is a schematic structural diagram of a camera testing apparatus according to an embodiment of the present disclosure;
fig. 2 is a schematic structural diagram of a camera testing apparatus according to another embodiment of the present disclosure;
fig. 3 is a schematic cross-sectional view of the supporting plate, the first jig, and the second jig of the camera testing device shown in fig. 2 after being assembled with the electronic device and the test card;
fig. 4 is a flowchart of a camera testing method according to an embodiment of the disclosure.
Reference numerals:
1. a camera testing device; 10. a first jig; 101. a placement groove; 102. a camera hole; 103. positioning holes; 104. a notch; 105. a groove side surface; 106. the bottom surface of the groove; 11. a second jig; 110. a graphic card placement area; 111. a first mounting hole; 112. a second mounting hole; 12. a positioning column; 13. an elastic member; 14. a handle; 15. a base; 150. a support plate; 1500. a via hole; 151. supporting legs; 16. a jig adjusting structure; 161. a first adjusting section; 162. a second regulating part;
2. an electronic device; 20. a camera; 3. and testing the graphic card.
Detailed Description
The technical solution of the present disclosure is further specifically described below by way of examples and with reference to the accompanying drawings. In the specification, the same or similar reference numerals denote the same or similar components. The following description of the embodiments of the present disclosure with reference to the accompanying drawings is intended to explain the general inventive concept of the present disclosure and should not be construed as limiting the present disclosure.
Furthermore, in the following detailed description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of the embodiments of the disclosure. It may be evident, however, that one or more embodiments may be practiced without these specific details.
An embodiment of the present disclosure provides a camera testing apparatus, which can test a camera of an electronic device, and particularly can test a rear camera of the electronic device, but is not limited thereto, and can also test a front camera of the electronic device or test a top camera of the electronic device. The camera can be an ultramicro lens with a magnifier function, the distance from the focusing position to the front end face of the lens can be millimeter, the depth of field of the camera is extremely short and can be micron, but the camera is not limited to the above, and the camera can also be a camera with the focusing position such as the front end face of the lens being centimeter to meter, the depth of field being centimeter or even longer; it should be understood that the electronic device may be a cell phone, a tablet computer, etc.
The camera test device according to the embodiments of the present disclosure will be described in detail with reference to the accompanying drawings.
As shown in fig. 1 and 2, the camera testing device 1 may include a first jig 10 and a second jig 11; wherein:
the first jig 10 may be provided with a placing groove 101; as shown in fig. 3, the placement groove 101 is used for placing the electronic device 2 therein, and when designing the first jig 10, a profile design can be performed, that is: the shape and the size of the placing groove 101 are matched with those of the electronic device 2, so that the electronic device 2 is limited to move in the placing groove 101, and the situation that test errors are caused by shaking or deviation of the electronic device 2 in the process of testing the camera 20 in the follow-up process can be avoided.
For example, as shown in fig. 1 and 2, the first fixture 10 includes a slot side 105 and a slot bottom 106, and the slot side 105 and the slot bottom 106 may enclose the placement slot 101; where this slot side 105 is a face for corresponding to a side of the electronic device 2, and the slot bottom 106 is a face for corresponding to a front or back of the electronic device 2, it should be understood that when the electronic device 2 is a display device such as a mobile phone, the front mentioned in the embodiments of the present disclosure may be understood as a display face.
In order to ensure that the electronic device 2 can be placed in the placing groove 101 of the first fixture 10, when the placing groove 101 is processed, the size of the placing groove 101 needs to be slightly larger than that of the electronic device 2, that is, when the electronic device 2 is located in the placing groove 101, a certain gap is formed between the side surface of the electronic device 2 and the groove side surface 105, so that, in order to avoid the electronic device 2 shaking or shifting in the placing groove 101, the camera testing device 1 may further include a protective case (not shown in the figure), which may at least cover the side surface of the electronic device 2, or further include a surface of the electronic device 2 corresponding to the groove bottom surface 106 when covering the side surface of the electronic device 2.
It should be understood that the aforementioned protective case may have a certain elasticity to ensure that it is tightly attached to the placing slot 101 and the electronic device 2, thereby further ensuring that the electronic device 2 is stably installed in the placing slot 101. In addition, it should be noted that a through hole is formed in a portion of the protective cover corresponding to the camera 20 to be tested in the electronic device 2, so as to avoid influencing subsequent shooting by the camera 20.
In this embodiment, the camera testing device 1 can not only make the electronic device 2 more stably installed in the placing groove 101 by being provided with the protective case, but also protect the electronic device 2 to avoid the situation that the electronic device 2 is worn. In addition, still can improve camera testing arrangement 1's commonality through being equipped with the protective sheath, promptly: the camera test device 1 can test the cameras 20 of different models of electronic equipment 2. Wherein, to the big electronic equipment 2 of model difference, can design many money size protective sheaths, promptly: and a set of camera testing device 1 does not need to be arranged independently aiming at each model of electronic equipment 2, so that the cost is greatly reduced.
As shown in fig. 2, in order to facilitate the electronic device 2 to be placed in the placing groove 101 of the first fixture 10, a notch 104 may be provided on one or more sides of the first fixture 10, the notch 104 may be communicated with the placing groove 101, the electronic device 2 may be conveniently detached from the first fixture 10 by providing the notch 104, and other components on the electronic device 2 may also be avoided; as shown in fig. 2, the notch 104 may penetrate not only the groove side surface 105 but also the groove bottom surface 106. Furthermore, it should be understood that if the thickness of the electronic device 2 is greater than the depth of the placement groove 101, this notch 104 may not be provided; as the case may be.
It is to be noted that the terms "comprising" and "having" are used in the embodiments of the present disclosure to mean "including" and "having" in an open-ended manner and mean that there may be additional elements/components/etc. other than the listed elements/components/etc.
As shown in fig. 1 to 3, the first fixture 10 may further have a camera hole 102, and the camera hole 102 may communicate with the aforementioned placing slot 101, wherein the position of the camera hole 102 can correspond to the position of the camera 20, that is: this camera hole 102 may be opposed to the camera 20 when the electronic apparatus 2 is mounted in the placement slot 101, so that the camera 20 can take a picture.
Note that, as shown in fig. 3, the size of the camera hole 102 may be larger than that of the camera 20, that is: when the electronic device 2 is installed in the placement groove 101, the hole wall of the camera hole 102 may be located outside the camera 20 to ensure a normal shooting range of the camera 20. When the electronic device 2 is mounted in the placement groove 101, the lens front end surface of the camera 20 may be located in the camera hole 102 (as shown in fig. 3) or extend out of the camera hole 102, or may be located only in the placement groove 101 and not extend into the camera 20.
The axial extension direction (i.e., the axial direction Z) of the camera hole 102 mentioned in the embodiments of the present disclosure may be perpendicular to the slot bottom surface 106, that is, the camera hole 102 may be used to correspond to a rear camera of the electronic device 2 or to correspond to a front camera of the electronic device 2.
As shown in fig. 1 to 3, the second fixture 11 may include a card placing area 110, the card placing area 110 is used for placing the test card 3, and the position of the card placing area 110 may correspond to the position of the aforementioned camera hole 102 of the first fixture 10, so that the camera 20 of the electronic device 2 located in the placing slot 101 can shoot the test card 3 located on the card placing area 110 through the camera hole 102.
For example, the aforementioned test card 3 may be a black and white checkerboard card, i.e.: the test pattern is a black and white checkerboard, but is not limited thereto, and may be a test card 3 of other patterns. The back surface of the test card 3 (i.e. the surface of the test card 3 not provided with the test pattern) may be provided with a back adhesive, and the test card 3 may be attached to the card placing area 110 of the second fixture 11 by the back adhesive, or an adhesive layer (not shown in the figure) may be provided in the card placing area 110 of the second fixture 11, and the test card 3 may be adhered to the adhesive layer. In addition, the aforementioned test card 3 can be a reflective card, and can play a role of light supplement in the shooting process of the camera 20, so as to improve the shooting effect.
It should be noted that the card placing area 110 of the second fixture 11 may be a planar area, but is not limited thereto, the card placing area 110 of the second fixture 11 may also be provided with a limiting slot, and the test card 3 may be located in the limiting slot.
The aforementioned first jig 10 and the second jig 11 can move relatively in the axial direction Z of the camera hole 102 to adjust the distance between the test card 3 and the lens front end surface of the camera 20. When the first jig 10 and the second jig 11 are relatively moved in the axial direction Z of the imaging hole 102, the camera 20 of the electronic device 2 located in the placement slot 101 shoots the test card 3 located on the card placement area 110 in real time through the imaging hole 102.
It should be noted that the electronic device 2 may preview the picture captured by the camera 20, and the electronic device 2 includes an algorithm for reading a Focus Value (FV Value, for short) of the preview captured picture in real time, where the FV Value is used to evaluate the sharpness of the picture captured by the camera 20 of the electronic device 2; that is to say, when the first jig 10 and the second jig 11 move relatively in the axial direction Z of the camera hole 102, the camera 20 can shoot the test card 3 in real time, and meanwhile, the electronic device 2 can read the FV value of the current frame shot by the camera 20 during the moving process in real time and display the FV value of the current frame in real time, so as to determine the resolving power condition of the camera 20 according to the FV value.
In detail, the embodiment of the present disclosure may determine the resolving power of the camera 20 according to the focus values of all the pictures read by the electronic device 2; when the maximum focus value of the focus values of all the frames read by the electronic device 2 is greater than or equal to the preset threshold, it may be determined that the camera 20 of this electronic device 2 has good resolution, that is: as long as the first jig 10 and the second jig 11 move relatively in the axial direction Z of the camera hole 102 and the FV value of any picture shot by the camera 20 meets the preset threshold, it is determined that the camera 20 can focus clearly, and the camera 20 is a qualified product; when the focus values of all the frames read by the electronic device 2 are smaller than the preset threshold, it may be determined that the resolution of the camera 20 of the electronic device 2 is poor, that is: as long as the first jig 10 and the second jig 11 move relatively in the axial direction Z of the camera hole 102, and the FV values of all the pictures shot by the camera 20 do not satisfy the preset threshold, it is determined that the camera 20 cannot be focused clearly, and the camera 20 is an unqualified product.
It should be noted that, when the camera testing device 1 is used to test a rear camera of the electronic device 2, the display surface of the electronic device 2 may face outward (i.e. away from the bottom surface 106 of the slot), and an operator may directly observe and record a preview image displayed in real time by the electronic device 2 and an FV value corresponding to the image; when the front camera of the electronic device 2 is tested by using the camera testing device 1, the display surface of the electronic device 2 may face inward (i.e., face the bottom surface 106 of the slot), and at this time, it is inconvenient for an operator to directly observe and record the preview image displayed in real time by the electronic device 2 and the FV value corresponding to the image, so that, in order to record the FV value detection result of the camera 20, including the FV value and the image corresponding to the FV, the camera testing device 1 according to the embodiment of the present disclosure may further include a terminal computer (not shown), which may implement real-time communication with the electronic device 2 and record the FV value detection result of the camera 20, and thus the function of automatically detecting the resolution of the camera 20 may be implemented.
It should be understood that, by implementing real-time communication with the electronic device 2 through the terminal computer, the FV value detection result of the camera 20 is recorded, which is not only suitable for detecting the front camera of the electronic device 2, but also suitable for detecting the rear camera of the electronic device 2 or other cameras on the electronic device 2.
In the embodiment of the present disclosure, in order to avoid the first fixture 10 and the second fixture 11 from shifting in the process of moving relatively in the axial direction Z of the camera hole 102, one of the first fixture and the second fixture may be provided with a first mounting hole, a positioning column may be mounted in the first mounting hole, and the other one may be provided with a positioning hole in sliding fit with the positioning column; it should be noted that the axial direction of the positioning hole is parallel to the axial direction Z of the camera hole 102; according to the embodiment of the disclosure, the positioning columns are in sliding fit with the positioning holes, so that the first jig 10 and the second jig 11 can be ensured to move relatively along the designated direction, and the condition that the subsequent detection is inaccurate due to the deviation in the moving process is avoided.
Wherein, one of the first jig 10 and the second jig 11 may be provided with a second mounting hole, and an elastic member may be mounted at the second mounting hole, and the elastic member may be a spring; specifically, one end of the elastic member may be fixed in the second mounting hole, and the other end may be located outside the second mounting hole; it should be understood that when the first jig 10 and the second jig 11 move relatively in the axial direction Z of the camera hole 102, the elastic member can be in a compressed state, and in detail, when the first jig 10 and the second jig 11 move toward each other so that the distance between the test card 3 on the second jig 11 and the lens front end surface of the camera 20 on the first jig 10 is reduced, the first jig 10 and the second jig 11 can press the elastic member so that the elastic member is in a compressed state.
In the embodiment of the present disclosure, the elastic member is arranged to limit the maximum moving stroke of the first jig 10 and the second jig 11, and the elastic member recovers the elastic deformation capability, so that the first jig 10 or the second jig 11 can be quickly reset after the camera 20 is tested, which is time-saving and labor-saving. Wherein the maximum compression amount of the elastic piece is less than or equal to 5mm and is more than 0; the camera testing device 1 of this embodiment is applicable to the detection of the ultra-macro camera 20, but is not limited thereto, and may also be applicable to the detection of other cameras 20. Furthermore, it should be understood that the maximum compression of the elastic member is not limited to the aforementioned values, but may be other values, as the case may be.
It should be noted that, two ends of the elastic element may be respectively connected to the first fixture 10 and the second fixture 11, and at this time, the maximum moving stroke between the first fixture 10 and the second fixture 11 may be the maximum compression amount of the elastic element; but not limited thereto, one end of the elastic member may be connected to the first jig 10 and the second jig 11, and the other end may be in a free state.
For example, as shown in fig. 1, the second fixture 11 may be provided with the aforementioned first mounting hole 111 on which the positioning post 12 is mounted; the first fixture 10 may be provided with the aforementioned positioning hole 103 slidably engaged with the positioning post 12. The second fixture 11 is provided with the aforementioned second mounting hole 112, and the aforementioned elastic element 13 is mounted at the second mounting hole 112.
Specifically, as shown in fig. 1, the second fixture 11 may be rectangular, and two adjacent sides (for example, a long side and a short side) of the second fixture 11 are respectively provided with a first mounting hole 111, so as to further avoid the situation that the first fixture 10 and the second fixture 11 are offset in the relative movement process; but not limited thereto, the second jig 11 may also have a plurality of first mounting holes 111 on both the long side and the short side; the four corners of the second jig 11 may be respectively provided with a second mounting hole 112 to ensure the motion stability between the first jig 10 and the second jig 11; but not limited thereto, a plurality of second mounting holes 112 may be disposed at four corners of the second fixture 11.
It should be understood that a positioning column 12 is disposed in each of the first mounting holes 111, and an elastic member 13 is disposed in each of the second mounting holes 112. Further, it is also understood that the positions of the first mounting hole 111 and the second mounting hole 112 are located in other areas of the second jig 11 than the card placement area 110.
It should be noted that, when the aforementioned camera testing device 1 is used to test the camera 20 of the electronic device 2, the second fixture 11 may be stationary, and then the first fixture 10 is driven to move in a direction approaching the second fixture 11, so as to facilitate the operator to drive the first fixture 10, as shown in fig. 1, handles 14 may be disposed on two opposite sides of the aforementioned first fixture 10, and the operator may slowly press the handles 14 downward to move the first fixture 10 in a direction approaching the second fixture 11.
In addition, when the camera 20 of the electronic device 2 is tested by using the aforementioned camera testing apparatus 1, the first jig 10 may be stationary, and then the second jig 11 may be driven to move in a direction approaching the first jig 10. For example, as shown in fig. 2, the aforementioned camera testing apparatus 1 may further include a base 15, the base 15 may include a supporting plate 150 and supporting legs 151 located at two sides of the supporting plate 150, wherein the first fixture 10 may be mounted on the supporting plate 150 by bolts or screws; as shown in fig. 3, a through hole 1500 is disposed on the supporting plate 150, and the through hole 1500 is capable of allowing the second fixture 11 to move therein, so as to adjust a distance between the test card 3 on the second fixture 11 and the front end surface of the lens of the camera 20 on the first fixture 10.
It should be noted that, in order to increase the relative displacement of the first jig 10 and the second jig 11 in the axial direction Z of the camera hole 102, as shown in fig. 2, the camera test device 1 according to the embodiment of the present disclosure may further include a jig adjusting structure 16, and the jig adjusting structure 16 may be connected to the first jig 10 or the second jig 11; for example, as shown in fig. 2, the jig adjusting structure 16 may be mounted on the aforementioned base 15, and the jig adjusting structure 16 is connected to the second jig 11, the jig adjusting structure 16 is used for adjusting the second jig 11 to move in the axial direction Z of the camera hole 102; the moving stroke of the second jig 11 in the axial direction Z of the imaging hole 102 is less than or equal to 5mm and greater than 0.
As shown in fig. 2, the aforementioned jig adjusting structure 16 may include a first adjusting portion 161 and a second adjusting portion 162; specifically, the first adjusting portion 161 may be connected to the second jig 11, the first adjusting portion 161 is used for adjusting the second jig 11 to move in the axial direction Z of the imaging hole 102, and the adjusting accuracy of the first adjusting portion 161 is 1 mm; the second adjusting portion 162 can be connected to the second jig 11, the second adjusting portion 162 is used for adjusting the second jig 11 to move in the axial direction Z of the camera hole 102, and the adjusting precision of the second adjusting portion 162 is 0.05 mm; that is, the first adjusting part 161 may be a coarse adjusting part, and the second adjusting part 162 may be a fine adjusting part.
For example, the first adjusting portion 161 may include a coarse adjustment knob and a first transmission mechanism connecting the coarse adjustment knob and the second fixture 11; the second adjusting part 162 can finely adjust the knob and a second transmission mechanism connecting the fine adjusting knob and the second fixture 11; the first transmission mechanism and the second transmission mechanism may be gear mechanisms, but are not limited thereto, as long as the coarse adjustment knob or the fine adjustment knob can drive the second fixture 11 to move in the axial direction Z of the camera hole 102 when rotating; and the first transmission mechanism and the second transmission mechanism can share part of the structural components, but are not limited to the structure, and can also be completely independent of each other.
It should be understood that, in order to facilitate intuitive reading of the moving distance of the second fixture 11, a graduated caliper or a digital display meter may be provided on the second fixture 11.
In addition, it should be further noted that the embodiment of the present disclosure is not limited to manually driving the first fixture 10 or the second fixture 11 to move in the axial direction Z of the imaging hole 102, such as: the aforementioned hand-pressing handles 14 on both sides of the first jig 10 move the first jig 10 in the axial direction Z of the imaging hole 102; manually adjusting the fine adjustment knob or the coarse adjustment knob to move the second jig 11 in the axial direction Z of the camera hole 102; the embodiment of the present disclosure can also drive the first jig 10 or the second jig 11 to move in the axial direction Z of the camera hole 102 by electric or pneumatic means, for example: the camera testing device 1 of the embodiment of the present disclosure may further include a driving element such as a linear motor or an air cylinder, which may be connected to the first jig 10 or the second jig 11 and is used to drive the first jig 10 and the second jig 11, so that the first jig 10 and the second jig 11 move relatively in the axial direction Z of the camera hole 102.
The first jig 10 and the second jig 11 can be made of light metal or POM, so as to reduce the weight of the camera testing device 1, and facilitate transportation and carrying.
Based on the aforementioned content, the camera testing device 1 provided by the embodiment of the present disclosure may have the characteristics of simple structure, high detection precision, low cost, flexible movement, and convenience in transportation and carrying.
The embodiment of the present disclosure further provides a camera testing method, which is applied to the camera testing apparatus 1 described in any of the foregoing embodiments; as shown in fig. 4, the camera testing method includes:
step S100, placing the test graphic card 3 in a graphic card placing area 110 of the second fixture 11;
step S102, aligning the camera 20 of the electronic device 2 with the camera hole 102 of the first jig 10, and placing the electronic device 2 in the placing groove 101 of the first jig 10; for example, the electronic device 2 may be covered with the aforementioned protective cover, and then the camera 20 of the electronic device 2 is ensured to face the camera hole 102, and the electronic device 2 is placed in the placing groove 101; then the camera 20 can be properly adjusted to be over against the graph card to be measured;
step S104, opening the camera 20 of the electronic device 2 to enable the camera 20 to be in a shooting state; namely: entering a detection preview picture of the camera 20;
step S106, driving the first jig 10 and/or the second jig 11 to enable the first jig 10 and the second jig 11 to move relatively in the axial direction Z of the camera hole 102; such as: pressing the handles 14 on both sides of the aforementioned first jig 10 to move the first jig 10 in the axial direction Z of the imaging hole 102; or rotating the aforementioned fine adjustment knob or coarse adjustment knob to move the second jig 11 in the axial direction Z of the imaging hole 102;
step S108, reading the focus value of the current picture shot by the camera 20 in the moving process in real time by using the electronic equipment 2; in addition, the electronic device 2 may also display the current picture shot by the camera 20 and the focus value corresponding to the current picture in real time;
step S110 determines the resolving power of the camera 20 from all the focus values read by the electronic device 2.
When the maximum focus value of the focus values of all the frames read by the electronic device 2 is greater than or equal to the preset threshold, it may be determined that the camera 20 of the electronic device 2 has good resolution, that is: as long as the first jig 10 and the second jig 11 move relatively in the axial direction Z of the camera hole 102 and the FV value of any picture shot by the camera 20 meets the preset threshold, it is determined that the camera 20 can focus clearly, and the camera 20 is a qualified product; when the focus values of all the frames read by the electronic device 2 are smaller than the preset threshold, it may be determined that the resolution of the camera 20 of the electronic device 2 is poor, that is: as long as the first jig 10 and the second jig 11 move relatively in the axial direction Z of the camera hole 102, and the FV values of all the pictures shot by the camera 20 do not satisfy the preset threshold, it is determined that the camera 20 cannot be focused clearly, and the camera 20 is an unqualified product.
The camera testing method according to the embodiment of the present disclosure may construct a platform for effectively determining the resolution of the camera 20 by using the camera testing apparatus 1 having a simple structure and the FV algorithm in the electronic device 2.
It should be noted that, the aforementioned "connection" may mean that two structural components may be directly connected or indirectly connected; reference to "at … …" as used herein may mean that a structural member is formed or disposed directly on another structural member, or that a structural member is formed or disposed indirectly on another structural member, i.e., there are additional structural members between the structural members.
Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This disclosure is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.
Claims (10)
1. A camera testing device, comprising:
the first jig is provided with a placing groove and a camera hole communicated with the placing groove, the placing groove is used for placing electronic equipment with a camera, and the position of the camera hole can correspond to the position of the camera; and
the second jig comprises a graphic card placing area for placing a test graphic card, and the position of the graphic card placing area corresponds to the position of the camera shooting hole;
the first jig and the second jig can move relatively in the axial direction of the camera hole; when the first jig and the second jig move relatively in the axial direction of the camera shooting hole, a camera of the electronic equipment located in the placing groove shoots a test graphic card located on the graphic card placing area in real time through the camera shooting hole.
2. The camera testing device of claim 1,
a first mounting hole is formed in the second jig, and a positioning column is mounted at the first mounting hole;
the first jig is provided with a positioning hole in sliding fit with the positioning column, and the axial direction of the positioning hole is parallel to the axial direction of the camera shooting hole.
3. The camera testing device of claim 2,
a second mounting hole is formed in the second jig, and an elastic piece is mounted at the second mounting hole;
when the first jig and the second jig move relatively in the axial direction of the camera hole, the elastic piece can be in a compressed state, wherein the maximum compression amount of the elastic piece is less than or equal to 5mm and is greater than 0.
4. The camera testing device of claim 3,
one or more first mounting holes are formed in the long side and the short side of the second jig;
and one or more second mounting holes are formed in four corners of the second jig.
5. The camera testing device of claim 2, wherein handles are disposed on opposite sides of the first fixture.
6. The camera testing device of claim 1, further comprising: the base comprises a supporting plate provided with the first jig and supporting legs positioned on two sides of the supporting plate, a through hole matched with the position of the camera shooting hole is formed in the supporting plate, and the second jig can be allowed to move in the through hole;
the jig adjusting structure is mounted on the base and connected with the second jig, and the jig adjusting structure is used for adjusting the second jig to move in the axial direction of the camera hole;
the moving stroke of the second jig in the axial direction of the camera shooting hole is smaller than or equal to 5mm and larger than 0.
7. The camera testing device of claim 6, wherein the jig adjustment structure comprises a first adjustment portion and a second adjustment portion; wherein the content of the first and second substances,
the first adjusting part is connected with the second jig, the first adjusting part is used for adjusting the second jig to move in the axial direction of the camera hole, and the adjusting precision of the first adjusting part is 1 mm;
the second adjusting portion is connected with the second jig, the second adjusting portion is used for adjusting the second jig to move in the axial direction of the camera shooting hole, and the adjusting precision of the second adjusting portion is 0.05 mm.
8. The camera testing device of any one of claims 1 to 7,
the shape and the size of the placing groove are matched with those of the electronic equipment so as to limit the electronic equipment to move in the placing groove.
9. The camera testing device of claim 8,
one side of the first jig can be further provided with a notch, and the notch is communicated with the placing groove.
10. A camera testing method applied to the camera testing apparatus according to any one of claims 1 to 9, the camera testing method comprising:
placing the test graphic card in a graphic card placing area of the second jig;
aligning a camera of the electronic equipment with a camera hole of the first jig, and placing the electronic equipment in a placing groove of the first jig;
opening a camera of the electronic equipment so as to enable the camera to be in a shooting state;
driving the first jig and/or the second jig to enable the first jig and the second jig to move relatively in the axial direction of the camera hole;
reading a focus value of a current picture shot by the camera in a moving process in real time by using the electronic equipment;
and determining the analytic force of the camera according to all the focus values read by the electronic equipment.
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