阅读说明：本技术 对比度测试方法、对比度测试设备及存储介质 (Contrast test method, contrast test apparatus, and storage medium ) 是由 张茹 于 2020-08-13 设计创作，主要内容包括：本发明公开了一种对比度测试方法,包括以下步骤：获取待测设备的成像图像；根据所述成像图像确定亮度阈值；根据所述亮度阈值确定第一像素区域和第二像素区域,其中,所述第一像素区域中的像素点对应的亮度值小于或者等于所述亮度阈值,所述第二像素区域中的像素点对应的所述亮度值大于所述亮度阈值；根据所述第一像素区域对应的第一平均亮度值,以及所述第二像素区域对应的第二平均亮度值,确定所述待测设备的对比度。本发明还公开了一种对比度测试设备及计算机可读存储介质,达成了提高对比度测试结果的准确性的效果。(The invention discloses a contrast testing method, which comprises the following steps: acquiring an imaging image of equipment to be tested; determining a brightness threshold from the imaged image; determining a first pixel area and a second pixel area according to the brightness threshold, wherein the brightness value corresponding to the pixel point in the first pixel area is smaller than or equal to the brightness threshold, and the brightness value corresponding to the pixel point in the second pixel area is larger than the brightness threshold; and determining the contrast of the equipment to be tested according to the first average brightness value corresponding to the first pixel area and the second average brightness value corresponding to the second pixel area. The invention also discloses a contrast test device and a computer readable storage medium, which achieve the effect of improving the accuracy of the contrast test result.)

1. A contrast test method, characterized by comprising the steps of:

acquiring an imaging image of equipment to be tested;

determining a brightness threshold from the imaged image;

determining a first pixel area and a second pixel area according to the brightness threshold, wherein the brightness value corresponding to the pixel point in the first pixel area is smaller than or equal to the brightness threshold, and the brightness value corresponding to the pixel point in the second pixel area is larger than the brightness threshold;

and determining the contrast of the equipment to be tested according to the first average brightness value corresponding to the first pixel area and the second average brightness value corresponding to the second pixel area.

2. The contrast testing method of claim 1, wherein the step of obtaining an imaging image of the device under test is followed by further comprising:

preprocessing the imaging image to remove a region in the imaging image where vignetting exists;

the step of determining a brightness threshold from the imaged image comprises:

determining the brightness threshold from the pre-processed imaged image.

3. The contrast testing method of claim 1, wherein the step of determining a brightness threshold from the imaged image comprises:

acquiring the brightness value of a target pixel point in the imaging image;

and determining the brightness threshold according to the brightness value of the target pixel point.

4. The contrast testing method of claim 1, wherein the step of determining the first pixel region and the second pixel region according to the brightness threshold comprises:

acquiring the brightness value corresponding to each pixel point in the imaging image;

and taking the area where the pixel point with the brightness value smaller than or equal to the brightness threshold is located as the first pixel area, and taking the area where the pixel point with the brightness value larger than the brightness threshold is located as the second pixel area.

5. The contrast testing method according to claim 1, wherein the step of determining the contrast of the device under test according to the first average brightness value of the first pixel region and the second average brightness value of the second pixel region in the imaged image further comprises, before the step of:

acquiring a brightness value of each pixel point in the first pixel region, and calculating the first average brightness value according to the acquired brightness value;

and acquiring the brightness value of each pixel point in the second pixel region, and calculating the second average brightness value according to the acquired brightness value.

6. The contrast testing method of claim 1, wherein the step of acquiring an imaging image of the device under test comprises:

and acquiring shooting data of an image pickup device, and taking the shooting data as the imaging image.

7. The contrast testing method according to claim 1, wherein the step of determining the contrast of the device under test according to the first average brightness value of the first pixel region and the second average brightness value of the second pixel region in the imaged image further comprises:

acquiring an identification mark of the equipment to be tested;

and storing the identification mark and the contrast in a correlation manner to serve as a contrast test result of the equipment to be tested.

8. The contrast testing method according to claim 7, wherein the identification mark includes a device model, a device number, and/or a device name of the device under test.

9. A contrast testing apparatus, characterized in that the contrast testing apparatus comprises: memory, a processor and a contrast test program stored on the memory and executable on the processor, the contrast test program, when executed by the processor, implementing the steps of the contrast test method according to any one of claims 1 to 8.

10. A computer-readable storage medium, having stored thereon a contrast test program which, when executed by a processor, implements the steps of the contrast test method of any one of claims 1 to 8.

Technical Field

The present invention relates to the field of optical testing technologies, and in particular, to a contrast testing method, a contrast testing apparatus, and a computer-readable storage medium.

Background

VR (Virtual Reality) glasses are gradually being miniaturized. Therefore, many VR glasses use Pancake (lightweight and thin) optics that reduce the thickness and weight of the optical structures in the VR module. The VR module using Pancake's scheme can cause more serious "ghost" to appear when imaging because of the catadioptric of light between the lens. However, in the projection industry, the Contrast of an imaged image is generally tested by using an ANSI Contrast (an ANSI Contrast test method). In the ANSI contrast test process, a test chart is generally used, which is 4 × 4 black and white squares, and then the contrast of the tested product is obtained by calculating the ratio of the brightness average value of the central area of 8 black squares and 8 white squares in the imaged image. Because the Pancut scheme module is influenced by 'ghost' during imaging, the brightness average value of the central area is only calculated, and the real contrast of the module cannot be reflected. This results in the existing test scheme having the drawback of inaccurate contrast test results.

The above is only for the purpose of assisting understanding of the technical aspects of the present invention, and does not represent an admission that the above is prior art.

Disclosure of Invention

The present invention provides a contrast test method, a contrast test apparatus and a computer readable storage medium, which are capable of improving the accuracy of a contrast test result.

In order to achieve the above object, the present invention provides a contrast testing method, comprising the steps of:

acquiring an imaging image of equipment to be tested;

determining a brightness threshold from the imaged image;

determining a first pixel area and a second pixel area according to the brightness threshold, wherein the brightness value corresponding to the pixel point in the first pixel area is smaller than or equal to the brightness threshold, and the brightness value corresponding to the pixel point in the second pixel area is larger than the brightness threshold;

and determining the contrast of the equipment to be tested according to the first average brightness value corresponding to the first pixel area and the second average brightness value corresponding to the second pixel area.

Optionally, after the step of acquiring an imaging image of the device under test, the method further includes:

preprocessing the imaging image to remove a region in the imaging image where vignetting exists;

the step of determining a brightness threshold from the imaged image comprises:

determining the brightness threshold from the pre-processed imaged image.

Optionally, the step of determining a brightness threshold from the imaged image comprises:

acquiring the brightness value of a target pixel point in the imaging image;

and determining the brightness threshold according to the brightness value of the target pixel point.

Optionally, the step of determining the first pixel region and the second pixel region according to the brightness threshold comprises:

acquiring the brightness value corresponding to each pixel point in the imaging image;

and taking the area where the pixel point with the brightness value smaller than or equal to the brightness threshold is located as the first pixel area, and taking the area where the pixel point with the brightness value larger than the brightness threshold is located as the second pixel area.

Optionally, before the step of determining the contrast of the device under test according to the first average brightness value of the first pixel region and the second average brightness value of the second pixel region in the imaging image, the method further includes:

acquiring a brightness value of each pixel point in the first pixel region, and calculating the first average brightness value according to the acquired brightness value;

and acquiring the brightness value of each pixel point in the second pixel region, and calculating the second average brightness value according to the acquired brightness value.

Optionally, the step of acquiring an imaging image of the device under test includes:

and acquiring shooting data of an image pickup device, and taking the shooting data as the imaging image.

Optionally, after the step of determining the contrast of the device under test according to the first average brightness value of the first pixel region and the second average brightness value of the second pixel region in the imaging image, the method further includes:

acquiring an identification mark of the equipment to be tested;

and storing the identification mark and the contrast in a correlation manner to serve as a contrast test result of the equipment to be tested.

Optionally, the identification mark includes a device model, a device number, and/or a device name of the device to be tested.

In addition, to achieve the above object, the present invention further provides a contrast testing apparatus, which includes a memory, a processor, and a contrast testing program stored on the memory and executable on the processor, wherein the contrast testing program, when executed by the processor, implements the steps of the contrast testing method as described above.

Furthermore, to achieve the above object, the present invention also provides a computer readable storage medium having a contrast test program stored thereon, which when executed by a processor implements the steps of the contrast test method as described above.

The contrast test method, the contrast test device and the computer readable storage medium provided by the embodiment of the invention are characterized in that an imaging image of a device to be tested is obtained, a brightness threshold value is determined according to the imaging image, then a first pixel area and a second pixel area are determined according to the brightness threshold value, wherein a brightness value corresponding to a pixel point in the first pixel area is smaller than or equal to the brightness threshold value, the brightness value corresponding to a pixel point in the second pixel area is larger than the brightness threshold value, and the contrast of the device to be tested is determined according to a first average brightness value corresponding to the first pixel area and a second average brightness value corresponding to the second pixel area. The contrast can be determined according to the average brightness, so that the phenomenon that the accuracy of a contrast test result is easily influenced by objective factors when the contrast is determined according to the single-point brightness is avoided. Thus, the effect of improving the accuracy of the contrast test result is achieved.

Drawings

Fig. 1 is a schematic terminal structure diagram of a hardware operating environment according to an embodiment of the present invention;

FIG. 2 is a schematic flow chart of an embodiment of a contrast testing method according to the present invention;

FIG. 3 is a simplified diagram of a contrast testing system according to an embodiment of the present invention;

FIG. 4 is a diagram of a contrast test chart according to an embodiment of the present invention;

FIG. 5 is a schematic flow chart of another embodiment of the contrast ratio testing method of the present invention

FIG. 6 is a flow chart illustrating a contrast ratio testing method according to another embodiment of the present invention.

The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The VR module using Pancake's scheme can cause more serious "ghost" to appear when imaging because of the catadioptric of light between the lens. However, in the projection industry, the Contrast of an imaged image is generally tested by using an ANSI Contrast (an ANSI Contrast test method). In the ANSI contrast test process, a test chart is generally used, which is 4 × 4 black and white squares, and then the contrast of the tested product is obtained by calculating the ratio of the brightness average value of the central area of 8 black squares and 8 white squares in the imaged image. Because the Pancut scheme module is influenced by 'ghost' during imaging, the brightness average value of the central area is only calculated, and the real contrast of the module cannot be reflected. This results in the existing test scheme having the drawback of inaccurate contrast test results.

In order to solve the above-mentioned drawbacks of the related art, an embodiment of the present invention provides a contrast testing method, which mainly includes the following steps:

acquiring an imaging image of equipment to be tested;

determining a brightness threshold from the imaged image;

determining a first pixel area and a second pixel area according to the brightness threshold, wherein the brightness value corresponding to the pixel point in the first pixel area is smaller than or equal to the brightness threshold, and the brightness value corresponding to the pixel point in the second pixel area is larger than the brightness threshold;

and determining the contrast of the equipment to be tested according to the first average brightness value corresponding to the first pixel area and the second average brightness value corresponding to the second pixel area.

The contrast can be determined according to the average brightness, so that the phenomenon that the accuracy of a contrast test result is easily influenced by objective factors when the contrast is determined according to the single-point brightness is avoided. Thus, the effect of improving the accuracy of the contrast test result is achieved.

As shown in fig. 1, fig. 1 is a schematic terminal structure diagram of a hardware operating environment according to an embodiment of the present invention.

The terminal of the embodiment of the invention can be a terminal device such as a PC.

As shown in fig. 1, the terminal may include: a processor 1001, such as a CPU, a network interface 1004, a user interface 1003, a memory 1005, a communication bus 1002. Wherein a communication bus 1002 is used to enable connective communication between these components. The user interface 1003 may include a Display screen (Display), an input unit such as a Keyboard (Keyboard), a mouse, etc., and the optional user interface 1003 may also include a standard wired interface, a wireless interface. The network interface 1004 may optionally include a standard wired interface, a wireless interface (e.g., WI-FI interface). The memory 1005 may be a high-speed RAM memory or a non-volatile memory (e.g., a magnetic disk memory). The memory 1005 may alternatively be a storage device separate from the processor 1001.

Those skilled in the art will appreciate that the terminal structure shown in fig. 1 is not intended to be limiting and may include more or fewer components than those shown, or some components may be combined, or a different arrangement of components.

As shown in fig. 1, a memory 1005, which is a kind of computer storage medium, may include therein an operating system, a network communication module, a user interface module, and a contrast test program.

In the terminal shown in fig. 1, the network interface 1004 is mainly used for connecting to a backend server and performing data communication with the backend server; the processor 1001 may be configured to invoke a contrast test program stored in the memory 1005 and perform the following operations:

acquiring an imaging image of equipment to be tested;

determining a brightness threshold from the imaged image;

determining a first pixel area and a second pixel area according to the brightness threshold, wherein the brightness value corresponding to the pixel point in the first pixel area is smaller than or equal to the brightness threshold, and the brightness value corresponding to the pixel point in the second pixel area is larger than the brightness threshold;

and determining the contrast of the equipment to be tested according to the first average brightness value corresponding to the first pixel area and the second average brightness value corresponding to the second pixel area.

Further, the processor 1001 may call a contrast test program stored in the memory 1005, and also perform the following operations:

preprocessing the imaging image to remove a region in the imaging image where vignetting exists;

the step of determining a brightness threshold from the imaged image comprises:

determining the brightness threshold from the pre-processed imaged image.

Further, the processor 1001 may call a contrast test program stored in the memory 1005, and also perform the following operations:

acquiring the brightness value of a target pixel point in the imaging image;

and determining the brightness threshold according to the brightness value of the target pixel point.

Further, the processor 1001 may call a contrast test program stored in the memory 1005, and also perform the following operations:

acquiring the brightness value corresponding to each pixel point in the imaging image;

and taking the area where the pixel point with the brightness value smaller than or equal to the brightness threshold is located as the first pixel area, and taking the area where the pixel point with the brightness value larger than the brightness threshold is located as the second pixel area.

Further, the processor 1001 may call a contrast test program stored in the memory 1005, and also perform the following operations:

acquiring a brightness value of each pixel point in the first pixel region, and calculating the first average brightness value according to the acquired brightness value;

and acquiring the brightness value of each pixel point in the second pixel region, and calculating the second average brightness value according to the acquired brightness value.

Further, the processor 1001 may call a contrast test program stored in the memory 1005, and also perform the following operations:

and acquiring shooting data of an image pickup device, and taking the shooting data as the imaging image.

Further, the processor 1001 may call a contrast test program stored in the memory 1005, and also perform the following operations:

acquiring an identification mark of the equipment to be tested;

and storing the identification mark and the contrast in a correlation manner to serve as a contrast test result of the equipment to be tested.

Referring to fig. 2, in an embodiment of the contrast testing method of the present invention, the contrast testing method includes the following steps:

step S10, acquiring an imaging image of the equipment to be tested;

step S20, determining a brightness threshold value according to the imaging image;

step S30, determining a first pixel region and a second pixel region according to the brightness threshold, where a brightness value corresponding to a pixel point in the first pixel region is less than or equal to the brightness threshold, and the brightness value corresponding to a pixel point in the second pixel region is greater than the brightness threshold;

step S40, determining a contrast of the device under test according to the first average brightness value corresponding to the first pixel region and the second average brightness value corresponding to the second pixel region.

In the related art, when performing a contrast test, the contrast is generally calculated according to the central brightness of each test block in the imaging result of the device under test. Therefore, when the imaging result of the device to be tested has the "ghost", the degree of influence of the contrast obtained by the single-point data by the "ghost" factor is large, so that the test result is inaccurate. In order to improve the accuracy of the contrast test result, the present embodiment provides a contrast test method.

Before the contrast test is performed according to the contrast test method described in this embodiment, a test system may be set up first, and in order to enable those skilled in the art to better understand the protection scope of the present invention, this embodiment provides a test system setting up flow.

As an alternative implementation, referring to fig. 3, the test system includes a support table 10 and a test set 20, where the test set 20 includes an optical module under test 22 (i.e., a device under test, which may be an optical module under test in this embodiment) and a display screen 21. The test system further includes a camera device 30, wherein the camera device 30 is configured to shoot a test card displayed on the display screen 21 through the optical module 22 to be tested, that is, to obtain an imaging result of the optical module 22 to be tested.

The camera device 30 is connected with a control terminal 40B, and the control terminal 40B is configured to determine a contrast test result according to shooting data shot by the camera. Namely, for performing the steps of the contrast testing method according to the embodiment of the present invention.

Optionally, the display screen 22 may further be connected with a control terminal 40A, and the control terminal 40 connected to the display screen 21 is configured to control the display content of the display screen 21, such as lighting and turning off the display screen 21. For example, the display screen 21 may be controlled to display a contrast test chart. The contrast test chart is a standard contrast test chart, and as shown in fig. 4, the test chart is composed of black and white test blocks.

Alternatively, the test assembly 20 is horizontally disposed and the camera device 30 is perpendicular to the test assembly 20.

Optionally, the test should be performed in a dark room, and the whole system should have certain stability to ensure that the test process is not interfered.

It should be noted that, when performing a contrast test based on the above test system, in order to improve the test efficiency and reduce the test error, the camera needs to be adjusted first before the test starts so that the camera focuses to the clearest imaging position. And the exposure time of the camera is set to enable the maximum gray value of the white area of the image to be within an allowable range, such as 215-235, so as to avoid the increase of the accuracy of the test result caused by the over-bright or over-dark image. In addition, the brighter the image brightness, the more obvious the ghost is, and the smaller the contrast result of the final test will be. Furthermore, the shot images can be observed in real time through a control terminal connected with the camera, and the position of the test assembly is adjusted, so that black and white grids in an imaging area are uniformly distributed, and the data processing in the later period is facilitated.

In this embodiment, the contrast testing apparatus (i.e. the control terminal connected to the image capturing device) may obtain the shooting data of the image capturing device, and use the shooting data as an imaging image of the device under test (optical module under test).

Specifically, the imaging device is configured as a camera, and the shooting data is image data shot by the camera. In the test system, the camera needs to shoot a contrast test chart through the device to be tested, so that the image data shot by the camera is the imaging data of the device to be tested on the test chart.

Further, after the imaging image is acquired, the imaging image may be displayed in a display device of the contrast testing device, so that a user may select a target pixel point based on the imaging image displayed by the contrast testing device. A brightness threshold is then determined based on the target pixel point.

Specifically, the above-described imaged image may be displayed in the form of a picture on a display device of the contrast testing apparatus. And selecting at least two adjacent pixel points as the target pixel points in the displayed picture by the user. The target pixel point selected by the user is that the brightness of the central view field is maximum due to the influence of the imaging characteristics of the optical module on the imaging image. Therefore, the pixel points at the junctions of the four black and white grids in the center of the image can be checked, and the pixel points at the junctions of the four black and white grids in the center of the image are selected as target pixel points. When the target pixel points are selected and the brightness difference between a plurality of target pixel points is smaller than a set numerical value, the brightness value of the pixel point with the small brightness value in the target pixel points can be selected and rounded upwards to be used as the brightness threshold value. Otherwise, prompting the user to reselect the target pixel point.

Illustratively, if the difference between the brightness values of the adjacent pixels in the black region is less than 20, the brightness value corresponding to the pixel with the small value is selected and rounded up as the brightness threshold, for example, when the brightness values of the adjacent pixels are 27 and 42, 30 is selected as the brightness threshold. Otherwise, prompting the user to reselect the target pixel point

It is understood that the above-mentioned method for determining the brightness threshold is only one implementation of the present embodiment, and is not intended to limit the present invention. For example, the contrast test device may automatically identify a boundary region of the test block, and then determine the brightness threshold based on brightness values of pixels in the boundary region.

Exemplarily, the contrast testing device determines the boundary region according to an image recognition algorithm, then obtains a brightness value corresponding to each pixel point in the boundary region to calculate an average brightness value of the pixel points in the boundary region, and then uses the average brightness value of the pixel points in the boundary region as the brightness threshold.

Further, after determining the luminance threshold, the first pixel region and the second pixel region in the imaged image may be determined based on the luminance threshold.

Specifically, after the brightness threshold is determined, the brightness value corresponding to each pixel point in the imaging image may be obtained, then the area where the pixel point whose brightness value is less than or equal to the brightness threshold is located is used as the first pixel area, and the area where the pixel point whose brightness value is greater than the brightness threshold is located is used as the second pixel area.

After the first pixel region and the second pixel region are determined, a brightness value corresponding to each pixel point in the first pixel region can be obtained, and then a first average brightness value of pixel points in the first pixel region is calculated according to the obtained brightness value corresponding to each pixel point in the first pixel region. And acquiring a brightness value corresponding to each pixel point in the second pixel region, and then calculating a first average brightness value of the pixel points in the second pixel region according to the acquired brightness value corresponding to each pixel point in the second pixel region.

After the first average brightness value and the second average brightness value are determined, the ratio of the second average brightness value to the first average brightness value may be used as a contrast test result of the device to be tested, that is, the contrast corresponding to the device to be tested is the ratio of the second average brightness value to the first average brightness value.

It is to be understood that, since the test card is composed of black and white test blocks, in the imaged image, the first pixel region determined according to the luminance threshold value is composed of a plurality of first sub-pixel regions dispersed at different positions in the imaged image, and likewise, the second pixel region is composed of a plurality of second sub-pixel regions dispersed at different positions in the imaged image. Therefore, as an optional implementation scheme, the sub-contrast may be calculated according to an average brightness value of pixel points corresponding to two adjacent first sub-pixel regions and second sub-pixel regions. So that a plurality of sub-contrasts can be acquired. And then taking the average value of the plurality of sub-contrasts as the contrast of the device to be tested.

In the technical scheme disclosed in this embodiment, an imaging image of a device to be tested is obtained, a brightness threshold is determined according to the imaging image, then a first pixel region and a second pixel region are determined according to the brightness threshold, wherein a brightness value corresponding to a pixel point in the first pixel region is smaller than or equal to the brightness threshold, the brightness value corresponding to a pixel point in the second pixel region is larger than the brightness threshold, and a contrast of the device to be tested is determined according to a first average brightness value corresponding to the first pixel region and a second average brightness value corresponding to the second pixel region. The contrast can be determined according to the average brightness, so that the phenomenon that the accuracy of a contrast test result is easily influenced by objective factors when the contrast is determined according to the single-point brightness is avoided. Thus, the effect of improving the accuracy of the contrast test result is achieved.

Referring to fig. 5, based on the foregoing embodiment, in another embodiment, after the step S10, the method further includes:

step S50, preprocessing the imaging image to remove a vignetting area in the imaging image;

the step S20 includes:

step S21, determining the brightness threshold according to the pre-processed imaged image.

In this embodiment, after the imaging image of the device under test is acquired, preprocessing may be performed first.

Specifically, after the imaging image of the device to be tested is acquired, the imaging image can be displayed in a display interface of the contrast testing device, so that a user can remove a vignetting area in the imaging image through image processing software loaded on the contrast testing device, in a cutting mode and the like.

Or the contrast testing equipment is provided with an image recognition function, and the vignetting area in the imaging image can be recognized based on the image recognition function at the local end of the contrast testing equipment, so that the vignetting area in the imaging image is cut out automatically.

Or the contrast testing device can communicate with the server and call the remote image processing function through the image processing interface of the server, and remove the vignetting area in the imaging image through the remote image processing function.

Or the contrast testing device may send the imaging image to the server, and after the server receives the imaging image, the server removes the vignetting region in the imaging image through the image function of the local terminal or other terminals, and then feeds back the imaging image from which the vignetting region is removed to the contrast testing device.

Further, after pre-storing the imaged image, the brightness threshold may be determined according to the pre-stored imaged image.

In this embodiment, after the imaging image of the device to be tested is acquired, preprocessing may be performed first, so that an effect of improving accuracy of a contrast test result is achieved.

Optionally, referring to fig. 6, based on any one of the foregoing embodiments, in a further embodiment, after step S40, the method further includes:

step S60, acquiring the identification mark of the equipment to be tested;

and step S70, storing the identification mark and the contrast in a correlation mode to serve as a contrast test result of the equipment to be tested.

In this embodiment, before the contrast test is started, the user may input the identification identifier of the device to be tested, or the contrast test device may determine the identification identifier of the device to be tested through the tag disposed on the device to be tested.

After the identification mark is obtained, the identification mark and the contrast may be stored in an associated manner to serve as a contrast test result of the device to be tested.

It should be noted that the identification mark includes the device model, the device number, and/or the device name of the device under test.

In the embodiment, the identification mark and the contrast of the device to be tested can be automatically associated and stored, so that result statistics is not needed manually, and the effect of simplifying the contrast test step is achieved.

In addition, an embodiment of the present invention further provides a contrast testing apparatus, where the contrast testing apparatus includes a memory, a processor, and a contrast testing program stored in the memory and executable on the processor, and when the contrast testing program is executed by the processor, the steps of the contrast testing method described in the above embodiments are implemented.

In addition, an embodiment of the present invention further provides a computer-readable storage medium, where a contrast test program is stored on the computer-readable storage medium, and the contrast test program, when executed by a processor, implements the steps of the contrast test method according to the above embodiments.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or system that comprises the element.

The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.

Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium (e.g. ROM/RAM, magnetic disk, optical disk) as described above and includes several instructions for enabling a terminal device (e.g. PC, etc.) to execute the method according to the embodiments of the present invention.

The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.