CN110708540B - Dynamic crosstalk test system and dynamic crosstalk test method - Google Patents
Dynamic crosstalk test system and dynamic crosstalk test method Download PDFInfo
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Abstract
The embodiment of the invention discloses a dynamic crosstalk testing system and a dynamic crosstalk testing method. Wherein, the system includes: the system comprises a human eye simulation device, a stereoscopic display to be tested and a central control device; the human eye simulation device is used for collecting a test image displayed by the stereoscopic display to be tested and observed by the human eye simulation device in the moving process; the stereoscopic display to be tested is used for displaying the test image; the central control equipment is used for controlling the moving process of the human eye simulation device and calculating a dynamic crosstalk degree value according to the image collected by the human eye simulation device. The embodiment of the invention solves the problems that the dynamic crosstalk degree value of the stereoscopic display is manually tested by a tester, so that the test result is not uniform and the test effect is poor; the method can realize the automation of the dynamic crosstalk measurement of the naked eye stereoscopic display, and the test result is unified, so that the test efficiency is improved.
Description
Technical Field
The embodiment of the invention relates to the technical field of naked eye 3D display, in particular to a dynamic crosstalk testing system and a dynamic crosstalk testing method.
Background
The naked eye 3D display is that the binocular position of an observer is calibrated, the image of the display screen is refracted through the light splitting grating, the left eye image and the right eye image are respectively transmitted to the left eye and the right eye of the observer in an oriented mode, and a stereoscopic image is formed based on parallax between the left eye image and the right eye image. The distance between the viewpoint of the left and right images is equal to the distance between the pupils of the left and right eyes, and is 5 cm-7 cm according to statistics.
In order to avoid the problem of dynamic crosstalk when the left view enters the right eye and the right view enters the left eye when the viewer moves, the moving speed of the arrangement image (i.e. the moving speed of the left and right image viewpoints) needs to be adjusted according to the moving speed of the viewer. For a large screen, the viewing distance and the viewing range of a viewer are large, so that the moving distance and the moving speed of the viewer are also larger than those of a common small screen (a mobile phone, a flat panel and other screens), and the moving speed of the viewer is easily unmatched with the moving speed of a left view point and a right view point during viewing, so that large dynamic crosstalk is introduced, and the viewing effect of a large-screen naked eye stereoscopic display is greatly influenced. Therefore, before the naked eye 3D display is shipped, a dynamic crosstalk test is required to match the moving speed of the layout of the naked eye 3D display with the moving speed of the viewer.
The existing testing technology needs a tester to watch the naked eye three-dimensional display screen by naked eyes, obtains an image with dynamic crosstalk by moving the positions of two eyes, and then adjusts the moving speed of the arrangement chart according to the dynamic crosstalk degree. However, because different testers have different binocular pupillary distances and different moving speeds, and the dynamic crosstalk is perceived differently, the dynamic crosstalk test and correction of the autostereoscopic display cannot be unified, and the final autostereoscopic display product dynamic crosstalk adjusting effect is poor.
Disclosure of Invention
The embodiment of the invention provides a dynamic crosstalk testing system and a dynamic crosstalk testing method, which aim to realize the automation of dynamic crosstalk testing of a naked eye stereoscopic display and unify testing results.
In a first aspect, an embodiment of the present invention further provides a dynamic crosstalk testing method, where the method includes:
driving the binocular acquisition equipment to move to a position corresponding to the center of the stereoscopic display to be detected, and acquiring a test chart, which is acquired by the binocular acquisition equipment and displayed by the stereoscopic display to be detected, at the position as a reference chart, wherein an original input chart of the test chart is an image of which one half pixel on the left side corresponds to a first color and one half pixel on the right side corresponds to a second color;
respectively calculating purity values of display screen areas of the stereoscopic display in a left reference image shot by a left camera and a right reference image shot by a right camera in the reference images;
driving the binocular acquisition equipment to move in the horizontal direction, and acquiring a preset number of crosstalk images with different degrees of crosstalk acquired by the binocular acquisition equipment in the moving process;
calculating a left camera crosstalk value and a right camera crosstalk value in the binocular acquisition device based on the crosstalk images;
and determining a dynamic crosstalk degree value according to the purity value of the left reference image, the purity value of the right reference image, the crosstalk value of the left camera and the crosstalk value of the right camera so as to complete a dynamic crosstalk test.
In a second aspect, an embodiment of the present invention provides a dynamic crosstalk testing system, where the system includes:
the system comprises a human eye simulation device, a stereoscopic display to be tested and a central control device;
the human eye simulation device is used for collecting a test image displayed by the stereoscopic display to be tested and observed by the human eye simulation device in the moving process;
the stereoscopic display to be tested is used for displaying the test image;
the central control device is used for driving the binocular acquisition device to move to a position corresponding to the center of the stereoscopic display to be detected, and acquiring a test chart, which is acquired by the binocular acquisition device and displayed by the stereoscopic display to be detected, at the position as a reference chart, wherein an original input chart of the test chart is an image with a left half pixel corresponding to a first color and a right half pixel corresponding to a second color;
respectively calculating purity values of display screen areas of the stereoscopic display in a left reference image shot by a left camera and a right reference image shot by a right camera in the reference images;
driving the binocular acquisition equipment to move in the horizontal direction, and acquiring a preset number of crosstalk images with different degrees of crosstalk acquired by the binocular acquisition equipment in the moving process;
calculating a left camera crosstalk value and a right camera crosstalk value in the binocular acquisition device based on the crosstalk images;
and determining a dynamic crosstalk degree value according to the purity value of the left reference image, the purity value of the right reference image, the crosstalk value of the left camera and the crosstalk value of the right camera so as to complete a dynamic crosstalk test.
The embodiment of the invention utilizes the human eye simulation device, the stereoscopic display equipment to be tested and the central control equipment to form a dynamic crosstalk test system, the central control equipment controls the human eye simulation device to simulate the motion of human eyes and collects a test chart displayed by the stereoscopic display to be tested in the motion process, and the dynamic crosstalk degree value of the stereoscopic display equipment to be tested is calculated and determined according to the collected image, so that the problems of non-uniform test results and poor test effect caused by the fact that a tester manually tests the dynamic crosstalk degree value of the stereoscopic display are solved; the method can realize the automation of the dynamic crosstalk measurement of the naked eye stereoscopic display, and the test result is unified, so that the test efficiency is improved.
Drawings
Fig. 1 is a schematic structural diagram of a dynamic crosstalk testing system according to a first embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a human eye simulation apparatus according to a first embodiment of the present invention;
fig. 3 is a schematic structural diagram of a dynamic crosstalk testing system connected to a display fixing platform according to a first embodiment of the present invention;
fig. 4 is a schematic structural diagram of a central control device in the first embodiment of the present invention;
FIG. 5 is a flowchart of a dynamic crosstalk testing method according to a second embodiment of the present invention;
FIG. 6 is a diagram showing an input image of a test chart according to a second embodiment of the present invention;
fig. 7 is a schematic view of the acquisition field of view of the binocular acquisition device at the optimal viewpoint position in the second embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
Example one
Fig. 1 is a schematic structural diagram of a dynamic crosstalk testing system according to an embodiment of the present invention, which is applicable to testing dynamic crosstalk of a naked-eye 3D display.
As shown in fig. 1, the dynamic crosstalk testing system includes a human eye simulation apparatus, a stereoscopic display to be tested, and a central control device.
The human eye simulation device is used for collecting a test image displayed by the stereoscopic display to be tested and observed by the human eye simulation device in the moving process. Further, the structure of the human eye simulation apparatus can refer to the schematic structural diagram of the human eye simulation apparatus shown in fig. 2. As shown in fig. 2, the human eye simulation apparatus includes a binocular collecting device and a mobile device. The binocular acquisition equipment comprises binocular cameras, and the distance between the binocular cameras is set according to the interpupillary distance of human eyes; because the interpupillary distances of the users of each naked eye stereoscopic display are not completely the same, the distance between the binocular cameras can be selected or adjusted in the dynamic crosstalk test process of the stereoscopic display equipment to be tested, so that test results watched by the users with different interpupillary distances are obtained and used as correction parameters of the display equipment to be tested. The mobile device comprises a horizontal moving slide rail, a vertical moving slide rail and a slide rail driving motor (not shown), wherein the horizontal moving slide rail and the vertical moving slide rail are used for enabling the binocular acquisition device to be driven by the driving motor to slide horizontally or vertically under the control of the central control device. It should be noted that the mobile device may be in a form other than a horizontally moving slide rail and a vertically moving slide rail, such as a form of moving a traction rope, and may be selected preferably according to the actual use situation.
And the stereoscopic display to be tested is used for displaying the test image. Specifically, the stereoscopic display is to add a group of specific optical devices, such as a grating film, on a display screen, so that light emitted by the display screen is split and refracted by the optical devices, an image that a left eye should receive is projected to a left eye of a user, and an image that a right eye should receive is projected to a right eye of the user, so that the user feels parallax, and a stereoscopic display effect is formed. The stereoscopic display can be embedded with an FPGA circuit module, and the working logic of the FPGA circuit module is used for processing the pictures displayed by the stereoscopic display.
The central control equipment is connected with the human eye simulation device and the stereoscopic display to be detected and is used for driving the binocular acquisition equipment to move to a position corresponding to the center of the stereoscopic display to be detected and acquiring a test chart, which is acquired by the binocular acquisition equipment and displayed by the stereoscopic display to be detected, at the position to be detected as a reference chart, wherein an original input chart of the test chart is an image of which one half pixel on the left side corresponds to a first color and one half pixel on the right side corresponds to a second color; respectively calculating purity values of display screen areas of the stereoscopic display in a left reference image shot by a left camera and a right reference image shot by a right camera in the reference images; driving the binocular acquisition equipment to move in the horizontal direction, and acquiring a preset number of crosstalk images with different degrees of crosstalk acquired by the binocular acquisition equipment in the moving process; calculating a left camera crosstalk value and a right camera crosstalk value in the binocular acquisition device based on the crosstalk images; and determining a dynamic crosstalk degree value according to the purity value of the left reference image, the purity value of the right reference image, the crosstalk value of the left camera and the crosstalk value of the right camera so as to complete a dynamic crosstalk test. Further, the calculated dynamic crosstalk degree value can be sent to a stereoscopic display to be tested.
In one embodiment, the mobile device in the dynamic crosstalk testing system may further be connected to a display fixing platform for placing the stereoscopic display to be tested. Reference may be made in particular to the dynamic crosstalk testing system shown in fig. 3. The distance between the stereoscopic display to be tested and the human eye simulation device can be controlled more conveniently by placing the stereoscopic display to be tested on the display fixing platform.
Furthermore, the dynamic crosstalk testing system also comprises a binocular acquisition equipment positioning device, which is used for calibrating the spatial position of the binocular acquisition equipment, wherein the binocular acquisition equipment positioning device comprises a positioning tracking identifier and a tracking device; the positioning and tracking identification can be an infrared identification lamp and is arranged on the binocular acquisition equipment, and the tracking device can be a binocular camera and is arranged on the stereoscopic display to be detected. When the tracking device of the stereoscopic display to be detected tracks the spatial position of binocular acquisition equipment of the human eye simulation device, real pictures of the stereoscopic display to be detected can be adjusted in real time according to the position of the binocular acquisition equipment, such as parameters of a picture arrangement period and the like, so that the pictures seen by a user are free of crosstalk.
In a specific embodiment, when the dynamic crosstalk testing system is in a working state, the central control device may send a control instruction to the mobile device in the eye simulation apparatus, where the control instruction is that the binocular collecting device moves in a horizontal or vertical direction, so as to simulate a dynamic process of a viewer in a process of viewing a display picture. Meanwhile, the binocular acquisition equipment acquires a display picture of the stereoscopic display to be detected in the moving process, transmits the acquired image to the central control equipment, and then the central control equipment calculates the dynamic crosstalk degree value of the stereoscopic display to be detected according to the received image.
Further, fig. 4 is a schematic structural diagram of a central control device in the first embodiment of the present invention. FIG. 4 illustrates a block diagram of an exemplary central control apparatus 412, which is suitable for use in implementing embodiments of the present invention. The central control device 412 shown in fig. 4 is only an example, and should not bring any limitation to the functions and the scope of the application of the embodiment of the present invention. As shown in fig. 4, the central control device 412 is in the form of a general purpose computing device. The components of the central control device 412 may include, but are not limited to: one or more processors or processing units 416, a system memory 428, and a bus 418 that couples the various system components including the system memory 428 and the processing unit 416.
The central control device 412 typically includes a variety of computer system readable media. Such media can be any available media that is accessible by central control device 412 and includes both volatile and nonvolatile media, removable and non-removable media.
The system memory 428 may include computer system readable media in the form of volatile memory, such as Random Access Memory (RAM) 430 and/or cache memory 432. The central control device 412 may further include other removable/non-removable, volatile/nonvolatile computer system storage media. By way of example only, storage system 434 may be used to read from and write to non-removable, nonvolatile magnetic media (not shown in FIG. 4, commonly referred to as a "hard drive"). Although not shown in FIG. 4, a magnetic disk drive for reading from and writing to a removable, nonvolatile magnetic disk (e.g., a "floppy disk") and an optical disk drive for reading from or writing to a removable, nonvolatile optical disk (e.g., a CD-ROM, DVD-ROM, or other optical media) may be provided. In these cases, each drive may be connected to bus 418 by one or more data media interfaces. Memory 428 can include at least one program product having a set (e.g., at least one) of program modules that are configured to carry out the functions of embodiments of the invention.
A program/utility 440 having a set (at least one) of program modules 442 may be stored, for instance, in memory 428, such program modules 442 including, but not limited to, an operating system, one or more application programs, other program modules, and program data, each of which examples or some combination thereof may comprise an implementation of a network environment. The program modules 442 generally perform the functions and/or methodologies of the described embodiments of the invention.
The central control device 412 may also communicate with one or more external devices 414 (e.g., keyboard, pointing device, display 424, etc.), where the display 424 may be used to display information corresponding to and provide access to the digital radiography system. The central control device 412 may also communicate with one or more devices that enable a user to interact with the central control device 412 and/or any device (e.g., network card, modem, etc.) that enables the central control device 412 to communicate with one or more other computing devices. Such communication may occur via input/output (I/O) interfaces 422. Also, the central control device 412 may communicate with one or more networks (e.g., a Local Area Network (LAN), a Wide Area Network (WAN), and/or a public network, such as the internet) through the network adapter 420. As shown, the network adapter 420 communicates with the other modules of the central control device 412 over a bus 418. It should be appreciated that although not shown in FIG. 4, other hardware and/or software modules may be used in conjunction with the central control device 412, including but not limited to: microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, tape drives, and data backup storage systems, among others.
The processing unit 416 executes programs stored in the system memory 428 to perform various functional applications and data processing, such as controlling the movement process of the human eye simulation apparatus and calculating a dynamic crosstalk degree value according to the image collected by the human eye simulation apparatus.
According to the technical scheme of the embodiment, a dynamic crosstalk testing system is formed by utilizing a human eye simulation device, the stereoscopic display equipment to be tested and a central control device, the human eye simulation device is controlled by the central control device to simulate the motion of human eyes, a test chart displayed by the stereoscopic display to be tested is collected in the motion process, the dynamic crosstalk degree value of the stereoscopic display equipment to be tested is calculated and determined according to the collected image, and the problems that the dynamic crosstalk degree value of the stereoscopic display is manually tested by a tester to cause non-uniform test results and poor test effect are solved; the method can realize the automation of the dynamic crosstalk measurement of the naked eye stereoscopic display, and the test result is unified, so that the test efficiency is improved.
Example two
Fig. 5 is a flowchart of a dynamic crosstalk testing method according to an embodiment of the present invention, which is applicable to testing the dynamic crosstalk of a naked-eye 3D display. The method can be implemented by the dynamic crosstalk testing system according to any embodiment of the invention.
As shown in fig. 5, the dynamic crosstalk testing method specifically includes the following steps:
and S510, driving the binocular acquisition equipment to move to a position corresponding to the center of the stereoscopic display to be detected, and acquiring a test chart, which is acquired by the binocular acquisition equipment and displayed by the stereoscopic display to be detected, at the position as a reference chart, wherein an original input chart of the test chart is an image of which one half pixel on the left side corresponds to a first color and one half pixel on the right side corresponds to a second color.
Specifically, the method is executed by a central control device in the dynamic crosstalk testing system. When the dynamic crosstalk test of the stereoscopic display is required, firstly, the stereoscopic display to be tested is placed on a display fixing platform; then the central control device drives the mobile device to move, and the binocular acquisition device is moved to a position (namely, an optimal viewpoint position) with the same height as the center of the display picture of the stereoscopic display to be detected, because the stereoscopic display screen to be detected has different size specifications, the binocular acquisition device is moved to the position with the same height as the center of the display picture of the stereoscopic display to be detected, and the acquired reference pictures can be unified in standard. The acquisition field of view of the binocular acquisition apparatus at the optimal viewpoint position may refer to the field of view image shown in fig. 7.
Further, a graph displayed by the stereoscopic display to be tested is a test graph, a schematic diagram of an original input graph of the test graph is shown in fig. 6, pixels in a left half area and a right half area of the display are respectively two different colors, the colors can be set to be any two different colors, and different colors are represented by different filling effects in fig. 6. Preferably, any two of the three colors of red, green and blue can be selected, because each pixel point has three color component values of red, green and blue, and any two colors of the three colors are adopted, which are not used for conversion of color values in the process of calculating the dynamic crosstalk value, so that the data amount of processing can be reduced, and the efficiency of obtaining the test result is improved. After the original input image of the test chart is input into the stereoscopic display to be tested, the display effect image of the test chart is an image with two interlaced colors.
The display effect image of the test chart is subjected to light splitting and refraction of a specific optical original on the stereoscopic display to be tested, an image collected by the binocular collecting equipment at a position (namely, the optimal viewpoint position) with the same height as the center of the display picture of the stereoscopic display to be tested is a pure color chart under an ideal condition, namely, the color of pixel points in a left reference chart collected by a left camera in the binocular collecting equipment is the color (first color) of a half area on the left side of an original input chart, and the color of pixel points in a right reference chart collected by a right camera is the color (second color) of a half area on the right side of the original input chart. Illustratively, the first color is red and the second color is green, and then the left reference image is a red image and the right reference image is a green image.
And S520, respectively calculating the purity values of the display screen areas of the stereoscopic display in the left reference image shot by the left camera and the right reference image shot by the right camera in the reference images.
Specifically, the process of calculating the purity value of the reference map is as follows:
taking the ratio of the sum of the first color component values in each pixel in the display screen area in the left reference image and the pixel number in the display screen area in the left reference image as the purity value of the display screen area in the left reference image; and taking the ratio of the sum of the values of the second color components in the pixels in the display screen area in the right reference image to the number of pixels in the display screen area in the right reference image as the purity value of the display screen area in the right reference image.
Still taking the first color as red and the second color as green as an example, the red purity value of the left reference graph is represented as:
(i is the number of display screen area pixels in the left reference picture,
for each pixel red component value). The green purity value of the right reference graph can be expressed as:
(j is the number of pixels of the display area of the display screen in the right reference picture,
for each pixel green component value).
And S530, driving the binocular acquisition equipment to move in the horizontal direction, and acquiring the preset number of crosstalk images with different degrees of crosstalk acquired by the binocular acquisition equipment in the moving process.
After the reference image is acquired, the central control device can drive the mobile device to enable the binocular acquisition device to move in the horizontal direction, and the binocular acquisition device can move at a constant speed from left to right or from right to left. Then, an image of the binocular collecting device in the moving process can be obtained, and the image is an image with different degrees of dynamic crosstalk according to different movement positions of the binocular collecting device. That is, there are pixels of the second color in the image collected by the left camera, and there are pixels of the first color in the image collected by the right camera.
It should be noted here that the two steps S520 and S530 are not in strict sequence, and the central control device may collect an image with dynamic crosstalk after calculating the purity value of the reference map, may also collect all images that need to be collected, and then calculate parameters such as the purity value and the dynamic crosstalk degree value in a unified manner, and may also collect an image with dynamic crosstalk while calculating the purity value of the reference map.
And S540, calculating a left camera crosstalk value and a right camera crosstalk value in the binocular acquisition device based on the crosstalk images.
Specifically, the process of calculating the crosstalk value of each camera includes the following steps:
calculating the difference value of the sum of the first color component values and the sum of the second color components in the pixels of the display screen area in each crosstalk image shot by the left camera, and dividing the difference value by the number of the pixels of the display screen area in the corresponding crosstalk image to obtain the color difference value of each crosstalk image shot by the left camera; calculating the sum of color difference values of all crosstalk images shot by the left camera, and dividing the sum by the preset number to obtain a crosstalk value of the left camera; calculating the difference value between the sum of the second color component values and the sum of the first color components in the pixels of the display screen area in each crosstalk image shot by the right camera, and dividing the difference value by the number of pixels of the display screen area in the corresponding crosstalk image to obtain the color difference value of each crosstalk image shot by the right camera; and calculating the sum of the color difference values of all crosstalk images shot by the right camera, and dividing the sum by the preset number to obtain the crosstalk value of the right camera.
Still taking the first color as red and the second color as green as an example, in the image collected by the binocular collecting equipment, if the red (R) channel value of a certain pixel is greater than the green (G) channel value in the display area of the stereoscopic display equipment to be detected, the pixel is defined as a left view pixel, and the pixel displays left view information; correspondingly, if the G channel value of a pixel is greater than the R channel value, the pixel is defined as a right-view pixel, and the pixel displays right-view information.
Thus: the red component value of the pixel in the image collected by the left camera is
Green component value of
(ii) a The red component value of the pixel in the image collected by the right camera is
Green component value of
. Define otherwise: i is the number of pixels in the screen display area in the image acquired by the left camera, and j is the number of pixels in the screen display area in the image acquired by the right camera. Then, the left camera crosstalk value may be expressed as:
(ii) a Right camera crosstalk value representationComprises the following steps:
(ii) a And n is the number of images acquired by the binocular acquisition equipment.
And S550, determining a dynamic crosstalk degree value according to the purity value of the left reference image, the purity value of the right reference image, the left camera crosstalk value and the right camera crosstalk value so as to complete a dynamic crosstalk test.
Specifically, the sum of the ratio of the left camera crosstalk value to the purity value of the left reference map and the ratio of the right camera crosstalk value to the purity value of the right reference map may be used as a dynamic crosstalk (Cross Talk) degree value CT. The formula can be expressed as
。
In another preferred embodiment, the display image can be corrected by the stereoscopic display according to the dynamic crosstalk degree value. That is, after determining the dynamic crosstalk degree value, the central control device sends the calculated dynamic crosstalk degree value to the stereoscopic display device to be tested, so that the stereoscopic display device to be tested determines whether the dynamic crosstalk degree value meets a preset condition, updates the scheduling parameter (such as changing the scheduling period) based on the dynamic degree value when the dynamic crosstalk degree value does not meet the preset condition, and performs scheduling display according to the updated scheduling parameter until the dynamic crosstalk degree value received by the stereoscopic display device to be tested meets the preset condition. The preset condition may be an upper limit value of a standard deviation of the dynamic crosstalk degree value, when the dynamic crosstalk degree value satisfies the preset condition, the visual effect of the viewer is better, and under an ideal condition, the dynamic crosstalk value is zero.
According to the technical scheme, the dynamic crosstalk testing system is utilized, the human eye simulation device is controlled through the central control equipment to simulate the motion of human eyes, a real test chart of the stereoscopic display to be tested is collected in the motion process, the dynamic crosstalk degree value of the stereoscopic display equipment to be tested is calculated and determined according to the collected image, the stereoscopic display can adjust the arrangement chart parameters according to the dynamic crosstalk degree value, the displayed image is corrected, and the problems that correction results are not uniform and the correction effect is poor due to the fact that a corrector corrects the dynamic crosstalk degree value of the stereoscopic display manually are solved; the method can realize the automation of the dynamic crosstalk correction of the naked eye stereoscopic display, and the correction result is unified, thereby improving the correction efficiency and realizing the real-time adjustment of the naked eye 3D display image.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (8)
1. A dynamic crosstalk testing method, comprising:
driving a binocular acquisition device to move to a position corresponding to the center of a stereoscopic display to be detected, and acquiring a test chart, which is acquired by the binocular acquisition device and displayed by the stereoscopic display to be detected, at the position as a reference chart, wherein an original input chart of the test chart is an image of which one half pixel on the left side corresponds to a first color and one half pixel on the right side corresponds to a second color;
respectively calculating the purity values of the display screen areas of the stereoscopic display in a left reference image shot by a left camera and a right reference image shot by a right camera in the reference images, wherein the purity values comprise: taking the ratio of the sum of the first color component values in each pixel in the display screen area in the left reference image to the number of pixels in the display screen area in the left reference image as the purity value of the display screen area in the left reference image, and taking the ratio of the sum of the second color component values in each pixel in the display screen area in the right reference image to the number of pixels in the display screen area in the right reference image as the purity value of the display screen area in the right reference image;
driving the binocular acquisition equipment to move in the horizontal direction, and acquiring a preset number of crosstalk images with different degrees of crosstalk acquired by the binocular acquisition equipment in the moving process;
calculating a left camera crosstalk value and a right camera crosstalk value in the binocular acquisition equipment based on the crosstalk images, and the method comprises the following steps: calculating a difference value between a sum of first color component values and a sum of second color components in pixels of a display screen area in each crosstalk image photographed by the left camera, dividing the difference value by the number of pixels of the display screen area in the corresponding crosstalk image to obtain the color difference value of each crosstalk image shot by the left camera, calculating the sum of the color difference values of each crosstalk image shot by the left camera, dividing the number by the preset number to obtain a left camera crosstalk value, calculating a difference value between the sum of second color component values and the sum of first color components in pixels of a display screen area in each crosstalk image shot by the right camera, dividing the difference value by the number of pixels of a display screen area in the corresponding crosstalk image to obtain the color difference value of each crosstalk image shot by the right camera, calculating the sum of the color difference values of each crosstalk image shot by the right camera, and dividing the sum by the preset number to obtain the crosstalk value of the right camera;
and taking the sum of the ratio of the left camera crosstalk value to the purity value of the left reference image and the ratio of the right camera crosstalk value to the purity value of the right reference image as a dynamic crosstalk degree value to finish a dynamic crosstalk test.
2. The method of claim 1, wherein after determining the dynamic crosstalk metric value, the method further comprises:
and sending the dynamic crosstalk degree value to the to-be-detected stereo display equipment so that the to-be-detected stereo display equipment judges whether the dynamic crosstalk degree value meets a preset condition, when the dynamic crosstalk degree value does not meet the preset condition, updating a layout parameter based on the dynamic crosstalk degree value, and displaying the layout according to the updated layout parameter until the dynamic crosstalk degree value received by the to-be-detected stereo display equipment meets the preset condition.
3. The method of claim 2, wherein updating a mapping parameter based on the dynamic crosstalk level value comprises:
the period of the mapping is changed to reduce the dynamic crosstalk level value.
4. A dynamic crosstalk testing system, comprising: the system comprises a human eye simulation device, a stereoscopic display to be tested and a central control device;
the human eye simulation device is used for collecting a test image displayed by the stereoscopic display to be tested and observed by the human eye simulation device in the moving process;
the stereoscopic display to be tested is used for displaying the test image;
the central control device is used for driving the binocular acquisition device to move to a position corresponding to the center of the stereoscopic display to be detected, and acquiring a test chart, which is acquired by the binocular acquisition device and displayed by the stereoscopic display to be detected, at the position as a reference chart, wherein an original input chart of the test chart is an image of which one half pixel on the left side corresponds to a first color and one half pixel on the right side corresponds to a second color;
respectively calculating the purity values of the display screen areas of the stereoscopic display in a left reference image shot by a left camera and a right reference image shot by a right camera in the reference images, wherein the purity values comprise: taking the ratio of the sum of the first color component values in each pixel in the display screen area in the left reference image to the number of pixels in the display screen area in the left reference image as the purity value of the display screen area in the left reference image, and taking the ratio of the sum of the second color component values in each pixel in the display screen area in the right reference image to the number of pixels in the display screen area in the right reference image as the purity value of the display screen area in the right reference image;
driving the binocular acquisition equipment to move in the horizontal direction, and acquiring a preset number of crosstalk images with different degrees of crosstalk acquired by the binocular acquisition equipment in the moving process;
calculating a left camera crosstalk value and a right camera crosstalk value in the binocular acquisition equipment based on the crosstalk images, and the method comprises the following steps: calculating a difference value between a sum of first color component values and a sum of second color components in pixels of a display screen area in each crosstalk image photographed by the left camera, dividing the difference value by the number of pixels of the display screen area in the corresponding crosstalk image to obtain the color difference value of each crosstalk image shot by the left camera, calculating the sum of the color difference values of each crosstalk image shot by the left camera, dividing the number by the preset number to obtain a left camera crosstalk value, calculating a difference value between the sum of second color component values and the sum of first color components in pixels of a display screen area in each crosstalk image shot by the right camera, dividing the difference value by the number of pixels of a display screen area in the corresponding crosstalk image to obtain the color difference value of each crosstalk image shot by the right camera, calculating the sum of the color difference values of each crosstalk image shot by the right camera, and dividing the sum by the preset number to obtain the crosstalk value of the right camera;
and taking the sum of the ratio of the left camera crosstalk value to the purity value of the left reference image and the ratio of the right camera crosstalk value to the purity value of the right reference image as a dynamic crosstalk degree value to finish a dynamic crosstalk test.
5. The system of claim 4, wherein the human eye simulation means comprises:
the system comprises binocular acquisition equipment and mobile equipment;
the binocular acquisition equipment comprises binocular cameras, and the distance between the binocular cameras is set according to the interpupillary distance of human eyes;
the mobile equipment comprises a horizontal moving slide rail, a vertical moving slide rail and a slide rail driving motor, wherein the horizontal moving slide rail and the vertical moving slide rail are used for enabling the binocular acquisition equipment to horizontally or vertically slide under the control of the central control equipment.
6. The system of claim 5, wherein a display fixing platform is connected to the mobile device for placing the stereoscopic display under test.
7. The system of claim 6, further comprising a binocular acquisition device positioning device for calibrating the spatial position of the binocular acquisition device, wherein the binocular acquisition device positioning device comprises a positioning tracking identifier and a tracking device; the positioning and tracking identification is arranged on the binocular acquisition equipment, and the tracking device is arranged on the stereoscopic display to be detected.
8. The system of claim 7, wherein the location tracking marker is an infrared marker light and the tracking device is a binocular camera.
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