CN114449259A

CN114449259A - Camera focusing test method, device and system and control terminal

Info

Publication number: CN114449259A
Application number: CN202210133384.9A
Authority: CN
Inventors: 陈永平; 路翊鹏; 杨艺军; 万文辉; 杜军红; 葛振纲
Original assignee: Shanghai Haocheng Information Technology Co ltd
Current assignee: Shanghai Haocheng Information Technology Co ltd
Priority date: 2022-02-14
Filing date: 2022-02-14
Publication date: 2022-05-06

Abstract

The application provides a method, a device, a system and a control terminal for testing camera focusing, wherein the method comprises the following steps: the method comprises the steps of obtaining test data submitted by a user, controlling an illumination assembly of each test space to adjust the ambient illumination inside each test space, controlling a test box to rotate, respectively rotating the surface, provided with a test graphic card, of each test space to a position below a lens of a camera to be tested, controlling the camera to be tested to shoot the test graphic card arranged on the surface of each test space to obtain a test picture, and determining the focusing success rate of the camera to be tested according to the test picture. In the technical scheme, the test box body is rotated, so that the camera to be tested can shoot the test chart cards arranged on the surface of each test space, the step of drawing the cards by testers is eliminated, the test time is shortened, and the test efficiency is improved.

Description

Camera focusing test method, device and system and control terminal

Technical Field

The present application relates to the field of camera testing technologies, and in particular, to a method, an apparatus, a system and a control terminal for testing camera focusing.

Background

The camera focusing refers to a process of adjusting a focal distance when the camera is used so as to enable a shot object to be clearly imaged. The parameters of the camera are usually set before the camera leaves a factory, and whether the parameters are correctly set or not is determined by testing the focusing of the camera and acquiring the focusing success rate.

In the prior art, before a camera is subjected to a focusing test, a light brightness and color temperature environment is set in a separate test space, then the position of the camera is fixed in the test space, and a large number of graphic cards are stacked together and placed at a certain distance from the camera. In the testing process, when a tester draws away one graphic card, the camera is controlled to shoot once, so that a plurality of images are obtained. And finally, judging whether each image is successfully focused by human eyes to obtain the focusing success rate.

However, in the existing focusing test method, the tester needs to frequently draw out the graphic card manually in the test process, so that the whole test process takes a long time, and the test efficiency is low.

Disclosure of Invention

The application provides a camera focusing test method, device, system and control terminal, which are used for solving the problem of low camera focusing test efficiency in the prior art.

In a first aspect, an embodiment of the present application provides a test method for camera focusing, which is applied to a test system, the test system includes a camera to be tested and a test box, the test box is composed of more than two test spaces, each test space has at least one surface of the test box, each surface is provided with a test graphic card, the inside of each test space is provided with an illumination assembly for adjusting ambient illumination, the horizontal center line of the test box is provided with a rotating shaft, and the rotating shaft is driven by a driving device to drive the test box to rotate.

The method comprises the following steps: acquiring test data submitted by a user, controlling the lighting assembly of each test space, and adjusting the ambient illumination inside each test space;

controlling the test box body to rotate, and respectively rotating the surface, provided with the test graphic card, in each test space to be below the lens of the camera to be tested;

controlling the camera to be tested to shoot the test graphic card arranged on the surface of each test space to obtain a test picture;

and determining the focusing success rate of the camera to be tested according to the test picture.

In a possible design of the first aspect, the controlling the test box to rotate the surface of each test space where the test graphics card is disposed below the lens of the camera to be tested respectively includes:

extracting the target shooting times of the camera to be tested from the test data;

determining the total rotation times of the test box body according to the target shooting times;

and controlling the test box body to rotate according to a preset rotation angle and a preset rotation direction according to the total rotation times of the test box body, wherein the surface provided with the test graphic card in one test space of the test box body rotates to a position below the lens of the camera to be tested when the test box body rotates once.

In another possible design of the first aspect, the controlling the test box to rotate according to a preset rotation angle and a preset rotation direction includes:

when the test box body completes one rotation and the surface of the test chart card arranged in the first test space of the test box body rotates to a position below the lens of the camera to be tested, controlling the test box body to stop rotating;

obtaining the duration of the rotation stop of the test box body;

and if the duration reaches the preset duration, continuing to control the rotation of the test box body, and rotating the surface, provided with the test graphic card, in the second test space of the test box body to a position below the lens of the camera to be tested.

In another possible design of the first aspect, after the continuously controlling the test box to rotate and rotating the surface of the test card disposed in the second test space of the test box to a position below the lens of the camera to be tested, the method further includes:

acquiring the cumulative number of times of rotation of the test box body;

and if the accumulated times reach the total rotating times, controlling the test box body to stop rotating.

In yet another possible design of the first aspect, the adjusting of the ambient lighting inside each test space includes:

acquiring a brightness adjusting value and a color temperature adjusting value corresponding to each test space from the test data;

and adjusting the ambient illumination inside each test space according to the brightness adjusting value and the color temperature adjusting value.

In another possible design of the first aspect, the determining a focusing success rate of the camera to be tested according to the test picture includes:

acquiring the contrast of the test picture, and determining the focusing success rate of the camera to be tested according to the contrast of the test picture and a preset contrast; or

Identifying font and font sizes of sample characters in the test picture to obtain an identification result of the test picture, wherein the test picture comprises at least two sample characters with different font sizes and fonts;

and determining the focusing success rate of the camera to be detected according to the identification result.

In another possible design of the first aspect, before the controlling the camera to be tested to shoot the test chart arranged on the surface of each test space, the method further includes:

acquiring a relative distance between a lens of the camera to be tested and the surface, provided with the test chart card, below the lens;

and controlling a first telescopic device to stretch according to a preset distance and the relative distance, wherein the first telescopic device is used for adjusting the relative distance between the camera to be tested and the test graphic card.

acquiring a central point of the surface of a test chart arranged below a lens of the camera to be tested, and determining whether the camera to be tested is aligned with the central point;

and if the camera to be detected is not aligned with the central point, controlling a second telescopic device to be telescopic, wherein the second telescopic device is used for adjusting the camera to be detected to be aligned with the central point.

In a second aspect, an embodiment of the present application provides a camera focusing test apparatus, including:

the illumination adjusting module is used for acquiring test data submitted by a user and controlling the illumination assembly of each test space to adjust the ambient illumination in each test space;

the rotation control module is used for controlling the test box body to rotate and respectively rotating the surface, provided with the test graphic card, in each test space to a position below the lens of the camera to be tested;

the shooting control module is used for controlling the camera to be tested to shoot the test chart arranged on the surface of each test space to obtain a test picture;

and the focusing determination module is used for determining the focusing success rate of the camera to be tested according to the test picture.

In a third aspect, an embodiment of the present application provides a camera focusing test system, including: the test box comprises a control terminal, a camera to be tested, a test box body and a rotating shaft arranged on the test box body, wherein the rotating shaft is driven by a driving device to drive the test box body to rotate;

the driving device is used for driving the test box body to rotate according to the driving instruction of the control terminal;

the camera to be tested is used for shooting the test graphic card arranged on the surface of each test space according to the shooting instruction of the control terminal to obtain at least two test pictures, and the at least two test pictures are used for the control terminal to determine the focusing success rate of the camera to be tested.

In one possible design of the third aspect, the method further includes: the telescoping device, the camera that awaits measuring set up in the telescoping device.

In yet another possible design of the third aspect, the lighting assembly is configured to adjust the ambient lighting of each test space according to an adjustment instruction of the control terminal, where the ambient lighting of each test space is different from each other.

In yet another possible design of the third aspect, a surface of the test space in which the test card is disposed is frosted translucent glass.

In a fourth aspect, an embodiment of the present application provides a control terminal, including a memory and at least one processor;

the memory stores computer-executable instructions;

the at least one processor executes computer-executable instructions stored by the memory, causing the at least one processor to perform the method as described above.

In a fifth aspect, the present application provides a readable storage medium, in which computer instructions are stored, and when executed by a processor, the computer instructions are used to implement the method described above.

In a sixth aspect, the present application provides a program product including computer instructions, which when executed by a processor, implement the method as described above.

According to the camera focusing test method, the device, the system and the control terminal, each test space can provide different test environments by adjusting the ambient light of each test space, the surface of each test space of the test box body, which is provided with the test chart card, can be respectively rotated to the position below the lens of the camera to be tested, the camera to be tested can shoot the test chart card on the surface of each test space, the flow step of drawing the card by a tester is eliminated, the test time is shortened, and the test efficiency is improved.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and together with the description, serve to explain the principles of the application;

fig. 1 is a schematic structural diagram of a camera focus test system according to an embodiment of the present disclosure;

FIG. 2 is a cross-sectional view of a camera focus test system provided in an embodiment of the present application;

FIG. 3 is a schematic structural diagram of a test box provided in an embodiment of the present application;

FIG. 4 is a schematic structural diagram of a test space provided in an embodiment of the present application;

fig. 5 is a schematic structural diagram of a camera focus test system according to an embodiment of the present disclosure;

fig. 6 is a schematic structural diagram of a camera focus test system according to an embodiment of the present application;

FIG. 7 is a schematic flowchart of an embodiment of a method for testing focusing of a camera according to the present disclosure;

fig. 8 is a schematic flowchart of a second method for testing camera focusing according to an embodiment of the present disclosure;

fig. 9 is a schematic structural diagram of a testing apparatus for focusing a camera according to an embodiment of the present disclosure;

FIG. 10 is a block diagram of a testing system for focusing a camera according to an embodiment of the present disclosure;

fig. 11 is a schematic structural diagram of a control terminal according to an embodiment of the present application.

With the above figures, there are shown specific embodiments of the present application, which will be described in more detail below. These drawings and written description are not intended to limit the scope of the inventive concepts in any manner, but rather to illustrate the inventive concepts to those skilled in the art by reference to specific embodiments.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all 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 application.

Fig. 1 is a schematic structural diagram of a camera focusing test system according to an embodiment of the present invention, as shown in fig. 1, the test system may be disposed on a base 10, and includes a housing, a surface of the housing is provided with a graphic card display area 11 for displaying a graphic card. The inside of the shell is provided with a test box body. The base 10 is further provided with a telescopic device, which specifically comprises a first telescopic device 12 and a second telescopic device 13. The first telescopic device 12 is further provided with a telescopic rod 121, and the telescopic rod 121 is provided with a camera fixing assembly 1211 (e.g., a mobile phone clip or a flat plate clip) for fixing a camera. Illustratively, the first telescopic device 12 includes a vertical guide rail therein, and the telescopic rod 121 can slide up and down on the first telescopic device 12 to adjust the vertical distance between the camera and the graphic card display area 11. In addition, the telescopic rod 121 can be extended and retracted to adjust the position of the camera. The first telescopic device 12 is arranged on the second telescopic device 13 and can slide on the second telescopic device 13 to adjust the position of the first telescopic device 12.

Illustratively, a touch panel 14 is further disposed on the housing, wherein a tester can control the test box in the housing to rotate through the touch panel 14.

Fig. 2 is a cross-sectional view of a camera focusing test system according to an embodiment of the present disclosure, where a test box 30 includes a plurality of test spaces, for example, as shown in fig. 2, the test box includes four test spaces, which are a test space a, a test space b, a test space c, and a test space d, and the test box 30 is rotatable in the housing 15. Illustratively, for every 90 degrees rotation of the testing chamber 30, there is a surface of the testing space under the lens of the camera mounted on the camera mounting assembly of the telescoping rod 121. Referring to fig. 2, the surface of the test space a is under the camera lens at this time.

Fig. 3 is a schematic structural diagram of a test box provided in an embodiment of the present application, and as shown in fig. 3, a test box 30 includes a rotating shaft 31, an illumination assembly 32, and a graphic card 33. The rotating shaft can be driven by the driving device to drive the whole testing box body 30 to rotate, and the position of each testing space can be changed in the rotating process. For example, each 90 degrees turn, the case has the graphics card 33 facing up (i.e., just in the card display area 11 of fig. 1, so that the camera can capture the graphics card 33 on the test space).

Each test space can be provided with a different graphic card 33, and each test space is provided with a different lighting assembly 32, so that a tester can control the lighting assemblies 32 through the touch panel 14 in fig. 1, thereby adjusting the ambient illumination inside each test space.

Fig. 4 is a schematic structural diagram of a test space provided in the embodiment of the present application, and as shown in fig. 4, a rotating shaft 31 of the test box is exposed out of the test box 30 for driving by a driving device. Fig. 5 is a schematic structural diagram of a camera focus test system according to an embodiment of the present disclosure, and as shown in fig. 5, a graphics card display area 11 and a touch panel 14 are disposed on a housing 15, and the housing 15 is disposed on a base 10. The card display area 11 corresponds to an opening in the housing 15 for exposing a card in a test space in a test housing inside the housing. Fig. 6 is a schematic structural diagram of a camera focus test system according to an embodiment of the present application, and as shown in fig. 6, a driving device 61 may be further disposed inside the housing 15, for example, the driving device 61 may be a motor.

In this embodiment, the test chamber may have a rectangular parallelepiped shape, and four surfaces of the upper surface, the lower surface, the front surface, and the rear surface are rectangular. Referring to fig. 2 above, the test chamber body is composed of four independent test spaces a, b, c, and d (i.e., a rectangular parallelepiped-shaped test chamber body is divided into four triangular prisms a, b, c, and d, each having at least one surface of the test chamber body).

Wherein a test card is disposed on a surface of the test space a (which may be rotated to place the card disposed on the surface in the card display area 11 so that the card may be photographed by the camera). Each test space is provided with an independent lighting assembly 32, and the control terminal can adjust each lighting assembly respectively to adjust the ambient illumination inside each test control.

During the rotation of the test box, the test chart on the surface of each test space is displayed in the chart display area 11, that is, under the lens of the camera, and the camera photographs the chart to obtain a test picture, wherein the camera is disposed at the camera fixing component 1211.

In the prior art, when a camera is subjected to a focus test, a manual test is generally used, a tester sets the external light brightness and color temperature environment, fixes the position of the camera, and then places a plurality of (for example, 20) identical image cards together at a certain distance from the camera. In the testing process, when the camera takes one test picture, one picture card is manually drawn. The mode in the prior art has the advantages of single environment of light brightness and color temperature, labor and time consumption and low test efficiency.

In order to solve the above problems, embodiments of the present application provide a method, an apparatus, a system and a control terminal for testing camera focusing, where the control terminal sets the test times and the ambient illumination brightness and color temperature of each test space, and controls the test box to rotate, so that the camera can shoot a graphic card on the surface of each test space, thereby obtaining multiple test pictures quickly, quickly and accurately testing the focusing success rate of the camera, and saving manpower. Meanwhile, different test environments can be set in the four different small box bodies, more complex environment switching is simulated, and the photo machine slicing rate test under more test environments is carried out.

The technical solution of the present application will be described in detail below with reference to specific examples. It should be noted that the following specific embodiments may be combined with each other, and the same or similar concepts or processes may not be described in detail in some embodiments.

Fig. 7 is a flowchart of an embodiment of a method for testing camera focusing according to the embodiment of the present disclosure, where the method for testing camera focusing may be applied to a control terminal in a test system, and for example, the control terminal may be a computer device.

The testing system comprises a camera to be tested and a testing box body, the testing box body is composed of more than two testing spaces, each testing space is provided with at least one surface of the testing box body, each surface is provided with a testing graphic card, the inside of each testing space is provided with an illuminating assembly used for adjusting ambient light, a rotating shaft is arranged at the horizontal center line of the testing box body, and the rotating shaft is driven by a driving device to drive the testing box body to rotate. As shown in fig. 7, the method for testing the focusing of the camera may include the following steps:

s701, obtaining test data submitted by a user, and controlling the lighting assembly of each test space to adjust the ambient illumination inside each test space.

Wherein, the ambient light in each test space of test box is different. For example, the test cards provided on the surface of each test housing may be identical.

In this embodiment, at least one lighting assembly is respectively disposed inside each test space, and the control terminal can adjust the ambient illumination of each test space by controlling the lighting assembly inside each test space. The ambient lighting may specifically include, for example, lamp brightness and color temperature.

For example, the test data may include the number of target shots of the camera under test and the ambient lighting inside each test space. The target shooting times are used for representing the shooting times of the camera to be tested in the test process.

Illustratively, the control terminal may include a human-machine interface (e.g., the touch panel 14 in fig. 1), through which the tester may input the test data.

In this embodiment, the test box may have a plurality of front faces during rotation, and each test space may occupy one of the front faces of the test box, and the test card may be disposed at the front face. For example, the testing box may be a cuboid or a prism, and in the case of a cuboid, four surfaces of the front, the rear, the left, and the right may be used as front surfaces during the rotation, and the testing box may include four testing spaces, each of which occupies one front surface.

S702, controlling the test box body to rotate, and respectively rotating the surface, provided with the test graphic card, in each test space to a position below the lens of the camera to be tested.

In this embodiment, a rotating shaft can be arranged at the horizontal center line of the test box body, and the rotating shaft is driven to rotate through the driving device to drive the test box body to rotate. In the rotating process, when the test box body rotates to reach a preset angle (for example, 90 degrees), the surface of one test space, which is provided with the test graphic card, is opposite to the camera to be tested, namely, the test box body rotates to a position below the lens of the camera to be tested, and at the moment, the camera to be tested can shoot the test graphic card arranged on the surface of the test space, so that the test picture corresponding to the test space is obtained.

For example, if the test box includes four test spaces, the test box may be rotated 90 degrees each time, so that the surface of one of the test spaces is opposite to the camera to be tested. Wherein, the total rotation number of the test box body can be set by the tester, for example, the tester sets the total rotation number of the test box body to be 20.

And S703, controlling the camera to be tested to shoot the test graphic card arranged on the surface of each test space to obtain a test picture.

In this embodiment, the test space opposite to the camera to be tested may be varied during the rotation of the test cabinet. For example, when the test box body rotates 90 degrees, the first test space is opposite to the camera to be tested, that is, the surface of the test card arranged in the first test space rotates to a position below the lens of the camera to be tested, when the test box body rotates 90 degrees again, the second test space is opposite to the camera to be tested, and after the test box body rotates 360 degrees, the first test space is opposite to the camera to be tested again.

The camera to be tested can shoot the test graphic card arranged on the surface of each test space opposite to the camera to be tested to obtain a plurality of test pictures. For example, the total number of times of rotation of the test box is the total number of test pictures, that is, each time the test box rotates by a preset angle, when a test space is opposite to the camera to be tested, the camera to be tested will take a picture of the test card in the test space to obtain a test picture.

S704, according to the test picture, the focusing success rate of the camera to be tested is determined.

In the present embodiment, the focusing success rate = number of clear pictures/total number of test pictures. For example, after a camera to be tested takes a test picture, the test picture may be imported into the control terminal, and image processing software in the control terminal identifies the test picture, for example, determines the contrast or font size of each test picture, and when the contrast satisfies a preset threshold, determines that the test picture is a clear picture. Or when the font size in the test picture is identified, determining that the test picture is a clear picture.

According to the embodiment of the application, the test box body is controlled to rotate, so that the camera can shoot the test chart cards arranged on the surface of each test box body, a plurality of test pictures are quickly obtained, the focusing success rate of the test camera can be quickly and accurately achieved, and manpower is saved. Meanwhile, different test environments can be set in four different test spaces, more complex environment switching is simulated, and the film forming rate of the camera under more test environments is tested.

On the basis of the foregoing embodiment, fig. 8 is a schematic flowchart of a second embodiment of a method for testing camera focusing according to the present application, and as shown in fig. 8, the step S702 may be specifically implemented by the following steps:

s801, extracting target shooting times of a camera to be tested from the test data;

s802, determining the total rotation times of the test box body according to the target shooting times;

and S803, controlling the test box body to rotate according to a preset rotation angle and a preset rotation direction according to the total rotation times of the test box body.

When the test box body rotates once, the surface of the test box body, which is provided with the test chart card, in a test space rotates to a position below the lens of the camera to be tested.

In this embodiment, the target shooting frequency of the camera to be tested may be set by the tester, and the target shooting frequency is equal to the total rotation frequency. For example, the preset rotation angle may be 90 degrees, and the preset rotation direction may be clockwise. The preset rotation angle is used for indicating the rotation angle of the test box body every time when the test box body rotates.

According to the embodiment of the application, the test box body is controlled to rotate by determining the total rotation times of the test box body, the preset rotation angle and the preset rotation direction of the test box body, so that the camera to be tested can shoot the test chart card arranged on the surface of each test space, a plurality of test pictures are obtained, and the accuracy of focusing detection is improved.

Further, on the basis of the above embodiments, in some embodiments, in the step S803, "control the test box to rotate according to the preset rotation angle and the preset rotation direction" may specifically be implemented by the following steps:

acquiring the duration of the rotation stop of the test box body;

In the present embodiment, the preset time period may be 10 seconds to 20 seconds. The first test space may be any one of the test cabinets, for example, the test space a, and the second test space is determined according to a preset rotation direction of the test cabinet, for example, the test space b or the test space d.

When the first test space in the test box body is opposite to the camera to be tested, the test box body can stop rotating, so that the camera to be tested can photograph the test graphic card arranged on the surface of the current test space to obtain a test picture. And when the duration of the rotation stopping reaches the preset duration, the test box body continues to rotate, so that the second test space is opposite to the camera to be tested.

Illustratively, when the second test space is opposite to the camera to be tested, the test box stops rotating, timing is restarted, and after the preset time length is reached, the test box continues to rotate, and the steps are repeated.

According to the embodiment of the application, the rotation and the stop of the test box body are controlled by presetting the time length, the camera to be tested can shoot the test graphic card arranged on the surface of each test space, a plurality of test pictures are obtained, the whole process does not need testers to manually take away the graphic cards, the test flow is reduced, and the test efficiency is improved.

Further, on the basis of the above embodiment, the method for testing focusing of a camera further includes the following steps:

acquiring the cumulative number of times of rotation of the test box body;

In this embodiment, the number of times the test case stops rotating may be accumulated as the accumulated number of times the test case rotates. For example, when the first test space in the test box rotates to the position where the camera to be tested is opposite, the test box stops rotating, and at this time, the number of times that the test box stops rotating may be accumulated.

According to the embodiment of the application, the rotation of the test box body can be controlled to stop rotating when the total rotation times is reached by determining the rotation accumulated times of the test box body, so that the full-automatic control of the whole process is realized, and the labor cost is reduced.

In some embodiments, the step S701 may be specifically implemented by the following steps:

In this embodiment, the test data may include a brightness adjustment value and a color temperature adjustment value of the lighting assembly in each test space, and the control terminal adjusts the lighting assembly in each test space according to the brightness adjustment value and the color temperature adjustment value of the lighting assembly in each test space.

According to the embodiment of the application, the environment illumination of each test space is adjusted, different test environments can be set in different test boxes, more complex environment switching is simulated, and the camera focusing yield test under more environments is carried out.

In some embodiments, the method for testing camera focusing may further include the following steps:

acquiring the sharpness of a test picture, and determining whether the test picture is a target picture or not according to the sharpness of the test picture and a preset sharpness threshold;

and determining the focusing success rate of the camera to be tested according to the number of the target pictures and the total number of the test pictures.

In this embodiment, each test picture may be input into sharpness analysis software of the control terminal, and whether the sharpness of the test picture reaches a preset sharpness threshold is determined, and if so, the test picture is determined to be the target picture.

Among them, sharpness, also called sharpness, is an index reflecting the sharpness of an image plane and the sharpness of an image edge. If the sharpness is adjusted higher, the contrast of details on the image plane is also higher, and the image looks clearer.

Illustratively, the focus success rate = the number of target pictures/total number of test pictures.

According to the embodiment of the application, the number of the target pictures is determined by comparing the acutance of the test pictures with the preset acutance threshold value, the focusing success rate of the camera to be tested is determined according to the total number of the test pictures, the definition of the test pictures is not required to be detected by human eyes of testers, the condition of manual detection errors is avoided, and the test accuracy is improved.

In some embodiments, the step S704 may be further implemented by:

acquiring the contrast of a test picture, and determining the focusing success rate of the camera to be tested according to the contrast of the test picture and a preset contrast; or

Identifying the font and the font size of the sample characters in the test picture to obtain an identification result of the test picture;

Wherein, the test picture contains at least two sample characters with different font sizes and fonts.

Specifically, each test picture may include ten characters with different font sizes and font sizes, for example, 10 characters with different font sizes and font sizes, or 5 characters with different font sizes and 5 characters with different font sizes and font sizes. The characters can be sequentially ordered according to the size of the font size of each character. The identification is performed by the control terminal. Illustratively, if the font size of 5-7 sample characters can be identified, the definition of the test picture is satisfactory, and the test picture is a picture with successful focusing.

Wherein, the success rate of focusing = pictures successful in focusing/total number of test pictures

In some embodiments, the method for testing camera focusing further includes:

acquiring a relative distance between a lens of a camera to be tested and the surface, provided with a test chart, below the lens;

and controlling the first telescopic device to stretch according to the preset distance and the relative distance, wherein the first telescopic device is used for adjusting the relative distance between the camera to be tested and the test graphic card.

In this embodiment, the relative distance is the vertical distance between the camera to be tested and the test graphic card, the camera to be tested is arranged on the first telescopic device, and the first telescopic device can adjust the height of the camera to be tested during telescopic operation, so that the relative distance between the camera to be tested and the test graphic card can be adjusted.

On the basis of the foregoing embodiments, in some embodiments, the method for testing camera focusing further includes:

acquiring a central point of the surface of a test chart arranged below a lens of a camera to be tested, and determining whether the camera to be tested is aligned with the central point;

and if the camera to be detected is not aligned with the central point, controlling the second telescopic device to be telescopic, wherein the second telescopic device is used for adjusting the camera to be detected to be aligned with the central point.

In this embodiment, the surface of the test space where the test card is disposed has a fixed center point, and when the test card is disposed on the surface of the test space, the center point of the surface can be used as the center point of the test card. And determining a straight line which passes through the central point and is perpendicular to the test chart by using the central point of the test chart, if the camera to be tested is positioned on the straight line, indicating that the camera to be tested is aligned with the central point, and if the camera to be tested is not positioned on the straight line, indicating that the camera to be tested is not aligned with the central point.

The second telescopic device can be an extension of the first telescopic device, the first telescopic device is used for adjusting the height of the camera to be measured, and the second telescopic device is used for adjusting the position of the camera to be measured on the horizontal plane to align with the central point.

In some embodiments, the control terminal includes a man-machine interface, as shown in table 1 below:

TABLE 1

In the above table 1, the telescopic height of the first telescopic rod and the telescopic length of the second telescopic rod may be set. At the same time, the ambient illumination inside the test controls a, b, c, d, such as color temperature and brightness, can also be set. The rotation angle and the number of rotations of the test case may also be set. And finally, determining the focusing success rate of the camera to be detected by adopting different modes, wherein the modes specifically comprise a common mode and a font mode.

The common mode is that the contrast of each test picture is compared with a threshold, and if the contrast of each test picture is greater than the threshold, the test picture is determined to be successfully focused, and the focusing success rate = the successfully focused test picture/the total number of test pictures. The font mode is that the font size that can be identified by the control terminal is determined to obtain the focusing success rate.

The following are embodiments of the apparatus of the present application that may be used to perform embodiments of the method of the present application. For details which are not disclosed in the embodiments of the apparatus of the present application, reference is made to the embodiments of the method of the present application.

Fig. 9 is a schematic structural diagram of a testing apparatus for camera focusing according to an embodiment of the present application, where the testing apparatus may be integrated in a control terminal, or may cooperate with the control terminal to complete the technical solution of the present application. As shown in fig. 9, the test apparatus 90 includes: an illumination adjustment module 91, a rotation control module 92, a photographing control module 93, and a focus determination module 94.

The illumination adjusting module 91 is configured to obtain test data submitted by a user, and control the lighting assembly of each test space to adjust the ambient illumination inside each test space. The rotation control module 92 is used for controlling the rotation of the test box body, and respectively rotating the surface of each test space, which is provided with the test graphics card, to the position below the lens of the camera to be tested. The shooting control module 93 is used for controlling the camera to be tested to shoot the test chart arranged on the surface of each test space to obtain a test picture. The focusing determination module 94 is used for determining the focusing success rate of the camera to be tested according to the test picture.

In some embodiments, the rotation control module 92 may be specifically configured to:

and controlling the test box body to rotate according to a preset rotation angle and a preset rotation direction according to the total rotation times of the test box body.

acquiring the duration of the rotation stop of the test box body;

In some embodiments, the testing device 90 may further include a counting module for:

acquiring the cumulative number of times of rotation of the test box body;

In some embodiments, the illumination adjusting module 91 may be specifically configured to:

In some embodiments, the focus determination module 94 may be specifically configured to:

In some embodiments, the testing device 90 further comprises a distance adjusting module for:

In some embodiments, the testing device 90 further comprises an alignment module for:

The apparatus provided in the embodiment of the present application may be used to execute the method in the above embodiments, and the implementation principle and the technical effect are similar, which are not described herein again.

It should be noted that the division of the modules of the above apparatus is only a logical division, and the actual implementation may be wholly or partially integrated into one physical entity, or may be physically separated. And these modules can be realized in the form of software called by processing element; or may be implemented entirely in hardware; and part of the modules can be realized in the form of calling software by the processing element, and part of the modules can be realized in the form of hardware. For example, the rotation control module may be a processing element separately set up, or may be implemented by being integrated into a chip of the apparatus, or may be stored in a memory of the apparatus in the form of program code, and the processing element of the apparatus calls and executes the functions of the rotation control module. Other modules are implemented similarly. In addition, all or part of the modules can be integrated together or can be independently realized. The processing element here may be an integrated circuit with signal processing capabilities. In implementation, each step of the above method or each module above may be implemented by an integrated logic circuit of hardware in a processor element or an instruction in the form of software.

For example, the above modules may be one or more integrated circuits configured to implement the above methods, such as: one or more Application Specific Integrated Circuits (ASICs), or one or more microprocessors (DSPs), or one or more Field Programmable Gate Arrays (FPGAs), among others. For another example, when some of the above modules are implemented in the form of a processing element scheduler code, the processing element may be a general-purpose processor, such as a Central Processing Unit (CPU) or other processor that can call program code. As another example, these modules may be integrated together, implemented in the form of a system-on-a-chip (SOC).

In the above embodiments, all or part of the implementation may be realized by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. The procedures or functions according to the embodiments of the present application are all or partially generated when the computer program instructions are loaded and executed on a computer. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored in a computer readable storage medium or transmitted from one computer readable storage medium to another, for example, the computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center by wire (e.g., coaxial cable, fiber optic, Digital Subscriber Line (DSL)) or wirelessly (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device, such as a server, a data center, etc., that incorporates one or more of the available media. The usable medium may be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., Solid State Disk (SSD)), among others.

Fig. 10 is a schematic diagram of a frame of a test system for focusing a camera according to an embodiment of the present disclosure, and as shown in fig. 10, the test system 1000 includes a control terminal, a camera to be tested, a test box, and a rotating shaft disposed in the test box, and the rotating shaft is driven by a driving device to drive the test box to rotate.

The testing box body is composed of more than two testing spaces, each testing space is provided with at least one surface of the testing box body, each surface is provided with a testing graphic card, an illuminating assembly used for adjusting ambient illumination is arranged inside each testing space, the control terminal is connected with the driving device, and the control terminal is connected with the camera to be tested;

the driving device is used for driving the test box body to rotate according to a driving instruction of the control terminal;

the camera to be tested is used for shooting the test graphic card arranged on the surface of each test space according to the shooting instruction of the control terminal to obtain at least two test pictures, and the test pictures are used for the control terminal to determine the focusing success rate of the camera to be tested.

Optionally, in some embodiments, the test system may further include a telescopic device, and the camera to be tested may be disposed on the telescopic device. Wherein, can adjust the height and the horizontal position of the camera that awaits measuring through telescoping device.

Illustratively, the telescoping device may be a telescoping rod. The camera to be measured can be a camera in a mobile phone or a video camera. Can set up detachable fixing device at telescoping device's end, fix the camera that awaits measuring.

Illustratively, the removable fixture may be a cell phone holder or a tablet clamp.

In some embodiments, the lighting assembly is configured to adjust the ambient illumination of each test space according to the adjustment instruction of the control terminal, and the ambient illumination of each test space is different from each other.

In some embodiments, the surface of the test space where the test card is disposed may be frosted translucent glass to hold the test card.

Fig. 11 is a schematic structural diagram of a control terminal according to an embodiment of the present application. As shown in fig. 11, the control terminal 1110 includes: at least one processor 1111, memory 1112, bus 1113, and communication interface 1114.

Wherein: the processor 1111, the communication interface 1114, and the memory 1112 communicate with each other via a bus 1113.

Communication interface 1114 provides for communicating with other devices. The communication interface 1114 includes a communication interface for data transmission and a display interface or an operation interface for human-computer interaction.

The processor 1111, configured to execute the computer executable instructions stored in the memory 1112, may specifically perform the relevant steps of the method described in the above embodiments.

The processor 1111 may be a central processing unit, or an Application Specific Integrated Circuit (ASIC), or one or more Integrated circuits configured to implement an embodiment of the present invention. The one or more processors included in the control terminal 1110 may be the same type of processor, such as one or more CPUs; or may be different types of processors such as one or more CPUs and one or more ASICs.

Memory 1112 may include high-speed RAM memory and may also include non-volatile memory, such as at least one disk memory.

The present embodiment also provides a readable storage medium, in which computer instructions are stored, and when at least one processor of the control device executes the computer instructions, the control device executes the test method for camera focusing provided by the various embodiments described above.

The present embodiments also provide a program product comprising computer instructions stored in a readable storage medium. The computer instructions may be read from a readable storage medium by at least one processor of the control device, and execution of the computer instructions by the at least one processor causes the control device to implement the test method for camera focus provided by the various embodiments described above.

In the present application, "at least one" means one or more, "a plurality" means two or more. "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone, wherein A and B can be singular or plural. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship; in the formula, the character "/" indicates that the preceding and following related objects are in a relationship of "division". "at least one of the following" or similar expressions refer to any combination of these items, including any combination of the singular or plural items. For example, at least one (one) of a, b, or c, may represent: a, b, c, a-b, a-c, b-c, or a-b-c, wherein a, b, c may be single or multiple.

It is to be understood that the various numerical references referred to in the embodiments of the present application are merely for convenience of description and distinction and are not intended to limit the scope of the embodiments of the present application. In the embodiment of the present application, the sequence numbers of the above-mentioned processes do not mean the execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiment of the present application.

Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present application.

Claims

1. The camera focusing test method is characterized by being applied to a test system, wherein the test system comprises a camera to be tested and a test box body, the test box body consists of more than two test spaces, each test space is provided with at least one surface of the test box body, each surface is provided with a test graphic card, the inside of each test space is provided with an illumination assembly for adjusting ambient illumination, a rotating shaft is arranged at the horizontal central line of the test box body, and the rotating shaft is driven by a driving device to drive the test box body to rotate, and the method comprises the following steps:

acquiring test data submitted by a user, and controlling the lighting assembly of each test space to adjust the ambient illumination inside each test space;

2. The method of claim 1, wherein the controlling the test box to rotate the surface of each test space where the test chart is disposed under the lens of the camera to be tested comprises:

3. The method of claim 2, wherein the controlling the test chamber to rotate according to a preset rotation angle and a preset rotation direction comprises:

obtaining the duration of the rotation stop of the test box body;

4. The method as claimed in claim 3, wherein the continuing to control the test box to rotate after rotating the surface of the second test space of the test box where the test card is disposed under the lens of the camera to be tested, further comprises:

acquiring the cumulative number of times of rotation of the test box body;

5. The method of claim 1, wherein controlling the lighting assembly of each test space adjusts the ambient lighting inside each test space, comprising:

6. The method of claim 1, wherein the determining the focusing success rate of the camera to be tested according to the test picture comprises:

7. The method according to claim 1, wherein before controlling the camera under test to take a picture of the test card disposed on the surface of each test space, the method further comprises:

8. The method according to claim 1, wherein before controlling the camera under test to take a picture of the test card disposed on the surface of each test space, the method further comprises:

9. A camera focusing test device is characterized by comprising:

10. A camera focus test system, comprising: the test box comprises a control terminal, a camera to be tested, a test box body and a rotating shaft arranged on the test box body, wherein the rotating shaft is driven by a driving device to drive the test box body to rotate;

11. The test system of claim 10, further comprising: the telescoping device, the camera that awaits measuring set up in the telescoping device.

12. The test system according to claim 10, wherein the illumination assembly is configured to adjust the ambient illumination of each test space according to the adjustment instruction of the control terminal, and the ambient illumination of each test space is different from each other.

13. The test system of claim 10, wherein the surface of the test space in which the test card is disposed is frosted translucent glass.

14. A control terminal comprising a memory and at least one processor;

the memory stores computer-executable instructions;

the at least one processor executing the computer-executable instructions stored by the memory causes the at least one processor to perform the method of any one of claims 1-8.

15. A readable storage medium having stored therein computer instructions, which when executed by a processor, are adapted to implement the method of any one of claims 1-8.

16. A program product comprising computer instructions, characterized in that the computer instructions, when executed by a processor, implement the method of any of claims 1-8.