A crosstalk measurement method and crosstalk measurement device

Abstract

The application provides a crosstalk measurement method and a crosstalk measurement device. The crosstalk measurement method comprises controlling a stereoscopic display device to display a preset planar color image, the preset planar color image comprising N view picture groups, each view picture group comprising N view pictures, the Mth view picture in the Mth view picture group corresponding to display a first color, and other view pictures corresponding to display a second color, wherein M is greater than or equal to 1, and M is less than or equal to N, N is a positive integer greater than or equal to 2; at a preset distance from the stereoscopic display device, obtaining the tristimulus value of a mixed color generated by mixing the first color and the second color according to each stereoscopic view picture imaged by the stereoscopic display device; obtaining the reference tristimulus value of the first color and the reference tristimulus value of the second color, and determining the crosstalk value of the stereoscopic display device according to the tristimulus value of the mixed color, the reference tristimulus value of the first color and the reference tristimulus value of the second color.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of display, in particular to a crosstalk measurement method and a crosstalk measurement device. BACKGROUND

[0002] Projection three-dimensional display technology is one of the naked-eye three-dimensional display technologies, which is different from the contact type naked-eye three-dimensional display technology. The latter is restricted by the development of liquid crystal panel technology, and currently cannot realize large-screen three-dimensional display in a true sense. The projection three-dimensional display technology has better adjustment and openness characteristics compared with the contact type three-dimensional display technology, and is more suitable for theoretical analysis in the research stage.

[0003] The good or bad of the projection three-dimensional display effect depends on whether the left eye and the right eye can respectively see the corresponding view. If there is serious mutual crosstalk in the image of the stereoscopic viewable area, the eye will not receive the image corresponding to the view point, and the human brain cannot perform stereoscopic fusion. Therefore, in the projection three-dimensional display, crosstalk is an important parameter for evaluating the quality of stereoscopic images.

[0004] The traditional method is to use a luminance sensor to measure the luminance distribution around the naked-eye three-dimensional display, and to use the relative value of the luminance to represent the crosstalk characteristics of the naked-eye three-dimensional display. For example, a crosstalk test method is described in the naked-eye stereoscopic television image quality test method-SJ / T11646-2016, which converts the view point information into a measurable luminance to realize it. However, in the above test scheme, the luminance is greatly affected by the environment, distance, viewing angle and other factors, and is relatively unstable. Moreover, in this measurement scheme, the luminance distribution of all view points needs to be measured before the crosstalk calculation can be performed, and when the number of view points of the display device to be measured is large, the measurement of crosstalk becomes very cumbersome. SUMMARY

[0005] The embodiments of the present application provide a crosstalk measurement method and a crosstalk measurement device to simplify the method steps of the existing crosstalk measurement.

[0006] To solve the above problems, the technical scheme provided by the embodiments of the present application is as follows:

[0007] A crosstalk measurement method, the crosstalk measurement method comprising the following steps:

[0008] Controlling a stereoscopic display device to be measured to display a preset planar color image, the preset planar color image comprising N view point picture groups, each of the view point picture groups comprising N view point pictures, the Mth view point picture in the Mth view point picture group corresponding to display a first color, and the other view point pictures corresponding to display a second color, wherein M is greater than or equal to 1, and M is less than or equal to N, and N is a positive integer greater than or equal to 2;

[0009] acquiring a tristimulus value of a mixed color generated by mixing the first color and the second color according to each stereoscopic view image imaged by the stereoscopic display device to be measured at a preset distance apart from the stereoscopic display device to be measured;

[0010] acquiring a reference tristimulus value of the first color and a reference tristimulus value of the second color, and determining a crosstalk value of the stereoscopic display device to be measured according to the tristimulus value of the mixed color, the reference tristimulus value of the first color and the reference tristimulus value of the second color.

[0011] In the crosstalk measurement method provided in the embodiment, the step of acquiring the reference tristimulus value of the first color and the reference tristimulus value of the second color, and determining the crosstalk value of the stereoscopic display device to be measured according to the tristimulus value of the mixed color, the reference tristimulus value of the first color and the reference tristimulus value of the second color comprises:

[0012] acquiring a first pure color image displayed by the stereoscopic display device to be measured at the preset distance apart from the stereoscopic display device to be measured;

[0013] acquiring the reference tristimulus value of the first color according to the first pure color image;

[0014] acquiring a second pure color image displayed by the stereoscopic display device to be measured at the preset distance apart from the stereoscopic display device to be measured, the first pure color image displaying the second color;

[0015] acquiring the reference tristimulus value of the second color according to the second pure color image;

[0016] determining the crosstalk value of the stereoscopic display device to be measured according to the tristimulus value of the mixed color, the reference tristimulus value of the first color and the reference tristimulus value of the second color.

[0017] In the crosstalk measurement method provided in the embodiment, the first pure color image and the second pure color image are acquired by using a colorimeter at the preset distance apart from the stereoscopic display device to be measured.

[0018] the reference tristimulus value of the first color is acquired according to the first pure color image by using the colorimeter;

[0019] the reference tristimulus value of the second color is acquired according to the second pure color image by using the colorimeter.

[0020] In the crosstalk measurement method provided in the embodiment, the step of determining the crosstalk value of the stereoscopic display device to be measured according to the tristimulus value of the mixed color, the reference tristimulus value of the first color and the reference tristimulus value of the second color comprises:

[0021] The crosstalk value of the stereoscopic display device to be measured at the preset distance is calculated according to the following relation (1), relation (2) and relation (3):

[0022]

[0023]

[0024]

[0025] wherein X is the X stimulus amount of the mixed color, Y is the Y stimulus amount of the mixed color, and Z is the Z stimulus amount of the mixed color; Xi is the X stimulus amount of the first color, Yi is the Y stimulus amount of the first color, and Zi is the Z stimulus amount of the first color; Xj is the X stimulus amount of the second color, Yj is the Y stimulus amount of the second color, and Zj is the Z stimulus amount of the second color; i is the attenuation coefficient of the first color; and j is the attenuation coefficient of the second color.

[0026] The crosstalk value of the stereoscopic display device to be measured is the average value of the sum of each i / j in the relation (1), relation (2) and relation (3).

[0027] The crosstalk measurement method provided in the embodiment further comprises, before the step of controlling the stereoscopic display device to display a preset planar color image, the steps of:

[0028] The preset distance is determined according to the imaging parameters of the stereoscopic display device to be measured, wherein the stereoscopic display device to be measured comprises a light grating plate and a display panel arranged oppositely, the display panel comprises a plurality of sub-pixels, the imaging parameters of the stereoscopic display device to be measured comprise the distance T between adjacent viewpoints, the distance D between the light grating plate and the display panel, and the width W of any sub-pixel, and the preset distance L is calculated according to the following relation (4):

[0029]

[0030] In the crosstalk measurement method provided in the embodiment, the step of obtaining the tristimulus value of the mixed color generated by mixing the first color and the second color according to each stereoscopic viewpoint image imaged by the stereoscopic display device to be measured at a preset distance from the stereoscopic display device to be measured comprises the steps of:

[0031] The tristimulus value of the mixed color generated by mixing the first color and the second color in each stereoscopic viewpoint image is detected at the preset distance from the stereoscopic display device to be measured by using a colorimeter.

[0032] In the crosstalk measurement method provided in the embodiment, the step of detecting the tristimulus value of the mixed color generated by mixing the first color and the second color in each of the stereoscopic view images at a preset distance from the stereoscopic display device to be measured by using a colorimeter comprises:

[0033] According to the position of the first color in each of the stereoscopic view images, a detection range is determined in a plane at a preset distance from the stereoscopic display device to be measured;

[0034] The colorimeter is arranged in the detection range to determine the tristimulus value of the mixed color generated by mixing the first color and the second color.

[0035] In the crosstalk measurement method provided in the embodiment, the step of detecting the tristimulus value of the mixed color generated by mixing the first color and the second color in each of the stereoscopic view images at a preset distance from the stereoscopic display device to be measured by using a colorimeter comprises:

[0036] A receiving plate is used to receive the projection image of each of the stereoscopic view images displayed by the stereoscopic display device to be measured, wherein the distance between the receiving plate and the stereoscopic display device to be measured is the preset distance;

[0037] An imaging spectrometer is used to acquire the projection image, and the tristimulus value of the mixed color generated by mixing the first color and the second color is determined according to the projection image.

[0038] In the crosstalk measurement method provided in the embodiment, the stereoscopic display device to be measured is placed in a dark room for crosstalk measurement.

[0039] The embodiment of the present application provides a crosstalk measurement device, comprising:

[0040] A control module is configured to control the stereoscopic display device to display a preset planar color image, the preset planar color image comprising N view picture groups, each of the view picture groups comprising N view pictures, the Mth view picture in the Mth view picture group corresponding to the first color, and the other view pictures corresponding to the second color, wherein M is greater than or equal to 1, and M is less than or equal to N, and N is a positive integer greater than or equal to 2;

[0041] A data conversion module is configured to acquire the tristimulus value of the mixed color generated by mixing the first color and the second color according to each of the stereoscopic view images imaged by the stereoscopic display device to be measured at a preset distance from the stereoscopic display device to be measured;

[0042] The data processing module is configured to acquire the reference tristimulus value of the first color and the reference tristimulus value of the second color, and determine the crosstalk value of the stereoscopic display device to be measured according to the tristimulus value of the mixed color, the reference tristimulus value of the first color and the reference tristimulus value of the second color.

[0043] The embodiment of the present application has the following beneficial effects: The embodiment of the present application provides a crosstalk measurement method and a crosstalk measurement device. In the traditional crosstalk measurement method, the relative value of brightness is used to represent the crosstalk characteristic of a display device. In the embodiment of the present application, a preset planar color image is displayed by the stereoscopic display device to be measured. The preset planar color image includes N view picture groups. Each view picture group includes N view pictures. The Mth view picture in the Mth view picture group corresponds to the display of a first color, and the other view pictures correspond to the display of a second color. M is greater than or equal to 1 and less than or equal to N. N is a positive integer greater than or equal to 2. The reference tristimulus value of the first color, the reference tristimulus value of the second color and the tristimulus value of the mixed color are acquired, and the crosstalk value of the stereoscopic display device to be measured is determined according to the tristimulus value of the mixed color, the reference tristimulus value of the first color and the reference tristimulus value of the second color. The steps of the crosstalk measurement method are simplified. BRIEF DESCRIPTION OF DRAWINGS

[0044] The technical solutions and other beneficial effects of the present application will become apparent from the following detailed description of the specific embodiments of the present application, combined with the accompanying drawings.

[0045] Figure 1 It is a schematic diagram of an existing crosstalk measurement device;

[0046] Figure 2 It is a planar view and a stereoscopic view obtained at a preset distance of a test image displayed by an existing display device to be measured;

[0047] Figure 3 It is a brightness distribution curve diagram of each view in a test image displayed by an existing display device to be measured;

[0048] Figure 4 It is a flowchart of the crosstalk measurement method provided by the embodiment of the present application;

[0049] Figure 5 It is a planar view and a stereoscopic view obtained at a preset distance of a test image displayed by the display device to be measured provided by the embodiment of the present application;

[0050] Figure 6 It is a first schematic diagram of the crosstalk measurement device provided by the embodiment of the present application;

[0051] Figure 7 It is a second schematic diagram of the crosstalk measurement device provided by the embodiment of the present application;

[0052] Figure 8 A structure schematic diagram of a to-be-tested stereoscopic display device provided by an embodiment of the present application. DETAILED DESCRIPTION

[0053] The technical solutions in the embodiments of the present application will be clearly and completely described in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by a person skilled in the art without creative work fall within the scope of protection of the present application. In addition, it should be understood that the specific embodiments described herein are only used to illustrate and explain the present application, and are not used to limit the present application. In the present application, the orientation words such as “upper” and “lower” generally refer to the upper and lower in the actual use or working state of the device, and specifically refer to the direction of the drawing surface in the drawings; and “inner” and “outer” refer to the contour of the device.

[0054] In the grating stereoscopic display, if the crosstalk is small, the human eye will ignore it, but when the number of view points increases and the distance between view points decreases, or the slit light transmission width increases and the waveform widens, the waveform overlap increases, and the crosstalk also increases accordingly, and the viewer will see obvious ghosting, which affects the viewing experience. Therefore, in the grating stereoscopic display, crosstalk is an important parameter for evaluating the quality of a stereoscopic image.

[0055] Please refer to Figure 1 , Figure 2 and Figure 3 ; wherein, Figure 1 is a schematic diagram of an existing crosstalk measurement device; Figure 2 is a plan view and a perspective view of a test image displayed by an existing to-be-tested display device; Figure 3 is a curve graph of the brightness distribution of each view in the test image displayed by the existing to-be-tested display device.

[0056] The existing crosstalk measurement method is to use a brightness sensor to measure the brightness distribution around the naked-eye three-dimensional display, and to use the relative value of brightness to represent the crosstalk characteristics of the naked-eye three-dimensional display. For example, a crosstalk test method is described in “Naked-eye stereoscopic television image quality test method-SJ / T11646-2016”, which includes the following steps:

[0057] Step 1: providing a to-be-tested display device 10, the to-be-tested display device 10 displays a test image, wherein the test image includes N view point images, wherein in the Xth view point image, the sub-pixels corresponding to the Xth view point display white color, and the sub-pixels corresponding to the other view points display black color, wherein N is a positive integer greater than or equal to 2, and X is less than or equal to N;

[0058] Step 2: test the white light luminance distribution curve of each test view and find out the main lobe angle;

[0059] Step 3: set the test view as a full black picture, and rotate the colorimeter 20 around the screen center with a preset distance L1 as the radius to perform luminance testing, wherein the angle interval is preferably not greater than 1°, and the angle range is recommended to be 45°;

[0060] Step 4: obtain the luminance distribution curve of each view according to the test results;

[0061] Step 5: record the test and calculation results in Table 1, and then calculate the ratio of luminance according to formula (1) to obtain the crosstalk value:

[0062]

[0063]

[0064] Table 1

[0065] As can be seen from the above, in the existing crosstalk measurement method, the viewpoint information is converted into actual measurable luminance to realize it. However, in the above test scheme, the luminance is greatly affected by the environment, distance, viewing angle and other aspects, and is relatively unstable. Moreover, in this measurement scheme, the luminance distribution of all viewpoints needs to be measured before crosstalk calculation, and when the number of viewpoints of the display device to be measured is large, the measurement of crosstalk becomes very cumbersome. Based on this, the embodiments of the present application provide a crosstalk measurement method and a crosstalk measurement device to simplify the method steps of the existing crosstalk measurement.

[0066] Please refer to Figures 4-8 The present application provides a crosstalk measurement method and a crosstalk measurement device, and the crosstalk measurement method comprises the following steps:

[0067] The display device to be measured 10 displays a preset planar color image, and the preset planar color image comprises N viewpoint picture groups, each viewpoint picture group comprises N viewpoint pictures, the Mth viewpoint picture in the Mth viewpoint picture group corresponds to display a first color, and the other viewpoint pictures correspond to display a second color, wherein M is greater than or equal to 1, and M is less than or equal to N, N is a positive integer greater than or equal to 2;

[0068] At a preset distance from the display device to be measured 10, the tristimulus values of the mixed color generated by the first color and the second color are obtained according to each stereoscopic viewpoint image imaged by the display device to be measured 10;

[0069] obtaining the reference tristimulus value of the first color and the reference tristimulus value of the second color, and determining the crosstalk value of the stereoscopic display device 10 according to the tristimulus value of the mixed color, the reference tristimulus value of the first color and the reference tristimulus value of the second color.

[0070] It can be understood that the present application simplifies the steps of the crosstalk measurement method by obtaining the reference tristimulus value of the first color, the reference tristimulus value of the second color and the tristimulus value of the mixed color, and determining the crosstalk value of the stereoscopic display device 10 according to the tristimulus value of the mixed color, the reference tristimulus value of the first color and the reference tristimulus value of the second color.

[0071] The technical solutions of the present application will be described in combination with specific embodiments.

[0072] Please refer to Figure 4 , Figure 5 , Figure 6 and Figure 7 ; wherein, Figure 4 is a flowchart of the crosstalk measurement method provided by the embodiments of the present application; Figure 5 is a plan view of a test image displayed by the display device under test and a stereoscopic view obtained at a preset distance; Figure 6 is a first schematic diagram of a crosstalk measurement device provided by the embodiments of the present application; Figure 7 is a second schematic diagram of a crosstalk measurement device provided by the embodiments of the present application.

[0073] The present embodiment provides a crosstalk measurement method, which comprises the following steps:

[0074] Step S10: controlling the stereoscopic display device 10 to display a preset planar color image, the preset planar color image comprising N view picture groups, each of the view picture groups comprising N view pictures, the Mth view picture in the Mth view picture group corresponding to display of a first color, and the other view pictures corresponding to display of a second color, wherein M is greater than or equal to 1 and less than or equal to N, and N is a positive integer greater than or equal to 2, as shown in Figure 5 .

[0075] In the present embodiment, the stereoscopic display device 10 can be placed on a test base (not shown in the figure), and in actual measurement, the position of the stereoscopic display device 10 can be adjusted according to actual conditions. It can be understood that the test base can be a fixed platform or a mobile platform, and the present embodiment does not make specific limitation thereto.

[0076] It should be noted that in the embodiment, the first color can be one of red, green and blue, and the second color can be another one of red, green and blue. It can be understood that the first color can also be one of white and black, and the second color can also be another one of white and black. The embodiment does not specifically limit the first color and the second color. Further, the first color is red and the second color is blue in the description of the technical solution of the application.

[0077] Step S20: At a preset distance from the to-be-tested stereoscopic display device 10, three-stimulus values of a mixed color generated by mixing the first color and the second color are obtained according to each stereoscopic view image imaged by the to-be-tested stereoscopic display device 10.

[0078] In an embodiment, the step S20 includes the following steps:

[0079] Step S21: The three-stimulus values of the mixed color generated by mixing the first color and the second color in each stereoscopic view image are detected by using the colorimeter 20 at the preset distance from the to-be-tested stereoscopic display device 10.

[0080] The step S21 includes the following steps:

[0081] Step S211: A detection range is determined in a plane at the preset distance from the to-be-tested stereoscopic display device 10 according to the position of the first color in each stereoscopic view image.

[0082] Step S212: The colorimeter 20 is arranged in the detection range to determine the three-stimulus values of the mixed color generated by mixing the first color and the second color, as shown in FIG. 2B. Figure 6

[0083] Step S30: Reference three-stimulus values of the first color and the second color are obtained, and a crosstalk value of the to-be-tested stereoscopic display device 10 is determined according to the three-stimulus values of the mixed color, the reference three-stimulus values of the first color and the reference three-stimulus values of the second color.

[0084] As described above, the step S21: In the embodiment, the step S30 includes the following steps:

[0085] Step S31: The to-be-tested stereoscopic display device 10 displays a first pure color image at the preset distance from the to-be-tested stereoscopic display device 10, and the first pure color image displays the first color.

[0086] ​Further, in the step S31, the colorimeter 20 is used to acquire the first pure color image at the preset distance from the stereoscopic display device 10 to be tested.

[0087] Step S32: acquiring the reference tristimulus value of the first color according to the first pure color image.

[0088] Further, in the step S32, the colorimeter 20 is used to acquire the reference tristimulus value of the first color according to the first pure color image.

[0089] Step S33: acquiring the second pure color image displayed by the stereoscopic display device 10 to be tested at the preset distance from the stereoscopic display device 10 to be tested, the first pure color image displaying the second color.

[0090] Further, in the step S33, the colorimeter 20 is used to acquire the second pure color image at the preset distance from the stereoscopic display device 10 to be tested.

[0091] Step S34: acquiring the reference tristimulus value of the second color according to the second pure color image.

[0092] Further, in the step S34, the colorimeter 20 is used to acquire the reference tristimulus value of the second color according to the second pure color image.

[0093] It should be noted that, in the embodiment, the stereoscopic display device 10 to be tested can be caused to display the first pure color image and the second pure color image, and the colorimeter 20 can be used to acquire the reference tristimulus value of the first color and the reference tristimulus value of the second color at the preset distance from the stereoscopic display device 10 to be tested, or a database can be constructed, the database being used to store the reference tristimulus values of colors, and the embodiment does not make specific limitation thereon.

[0094] Step S35: determining the crosstalk value of the stereoscopic display device 10 to be tested according to the tristimulus value of the mixed color, the reference tristimulus value of the first color, and the reference tristimulus value of the second color.

[0095] In an embodiment, the step S20 comprises the following steps:

[0096] Step S21: using the receiving plate 30 to receive the projection image of each of the stereoscopic view images displayed by the stereoscopic display device 10 to be tested, wherein the distance between the receiving plate 30 and the stereoscopic display device 10 to be tested is the preset distance.

[0097] It should be noted that in the embodiment, the receiving plate 30 is used to receive the projection image of each of the stereoscopic view images displayed by the stereoscopic display device 10 under test, which is only used for illustration, and in actual operation, any projection device in the prior art can be used to achieve the projection image, and in order to obtain the projection image as much as possible without distortion, the reflectivity of the receiving surface of the receiving plate 30 is greater than 55%.

[0098] Step S22: The imaging spectrometer 40 is used to obtain the projection image, and the tristimulus value of the mixed color generated by mixing the first color and the second color is determined according to the projection image, as shown in the following formula. Figure 7

[0099] In the embodiment, the imaging spectrometer 40 is located on the side of the stereoscopic display device 10 under test away from the receiving plate 30, and the imaging spectrometer 40 is spaced apart from the stereoscopic display device 10 under test by a second preset distance; it should be noted that the second preset distance can be adjusted according to actual operation, and the embodiment does not make specific limitation thereto.

[0100] As described above, step S22, in the embodiment, the step S30 includes the following steps:

[0101] Step S31: Obtain the projection image of the first pure color image displayed by the stereoscopic display device 10 under test at a distance apart from the stereoscopic display device 10 under test by the preset distance, and the first pure color image displays the first color.

[0102] Further, in the step S31, the receiving plate 30 is used to receive the projection image of the first pure color image displayed by the stereoscopic display device 10 under test.

[0103] Step S32: Obtain the reference tristimulus value of the first color according to the projection image of the first pure color image.

[0104] Further, in the step S32, the imaging spectrometer 40 is used to obtain the projection image of the first pure color image, and the reference tristimulus value of the first color is determined according to the projection image of the first pure color image.

[0105] Step S33: Obtain the projection image of the second pure color image displayed by the stereoscopic display device 10 under test at a distance apart from the stereoscopic display device 10 under test by the preset distance, and the second pure color image displays the second color.

[0106] Further, in the step S33, the receiving plate 30 is used to receive the projection image of the second pure color image displayed by the stereoscopic display device 10 under test.

[0107] ​Step S34: obtaining the reference tristimulus value of the second color according to the projection image of the second pure color image.

[0108] Further, in the step S34, the projection image of the second pure color image is obtained by using the imaging spectrometer 40, and the reference tristimulus value of the second color is determined according to the projection image of the second pure color image.

[0109] Step S35: determining the crosstalk value of the to-be-tested stereoscopic display device 10 according to the tristimulus value of the mixed color, the reference tristimulus value of the first color and the reference tristimulus value of the second color.

[0110] It should be noted that, in the embodiment, the imaging spectrometer 40 includes an image acquisition module and a processing module, the image acquisition module is used to obtain the projection image of the first pure color image and obtain the projection image of the second pure color image, and the processing module is used to determine the reference tristimulus value of the first color according to the projection image of the first pure color image and determine the reference tristimulus value of the first color according to the projection image of the second pure color image.

[0111] Specifically, in the step S30, the step of determining the crosstalk value of the to-be-tested stereoscopic display device 10 according to the tristimulus value of the mixed color, the reference tristimulus value of the first color and the reference tristimulus value of the second color includes:

[0112] The crosstalk value of the to-be-tested stereoscopic display device 10 at the preset distance is calculated according to the following relationship (1), relationship (2) and relationship (3):

[0113]

[0114]

[0115]

[0116] Wherein, X is the X stimulus amount of the mixed color, Y is the Y stimulus amount of the mixed color, and Z is the Z stimulus amount of the mixed color; Xi is the X stimulus amount of the first color, Yi is the Y stimulus amount of the first color, and Zi is the Z stimulus amount of the first color; Xj is the X stimulus amount of the second color, Yj is the Y stimulus amount of the second color, and Zj is the Z stimulus amount of the second color; i is the attenuation coefficient of the first color; j is the attenuation coefficient of the second color.

[0117] Wherein, the crosstalk value of the to-be-tested stereoscopic display device 10 is the average value of the sum of each i / j in the relationship (1), the relationship (2) and the relationship (3).

[0118] It should be noted that the above description is only a specific implementation of the present application, and the present application is not limited to the above description. Figure 8 The structural schematic diagram of the stereoscopic display device to be measured provided by the embodiment of the present application.

[0119] Before the step 10, the crosstalk measurement method provided by the embodiment of the present application further includes the following steps:

[0120] Step 01: determining the preset distance according to the imaging parameters of the stereoscopic display device 10 to be measured, wherein the stereoscopic display device 10 to be measured includes a grating plate 11 and a display panel 12 arranged oppositely, the display panel 12 includes a plurality of sub-pixels 121, the imaging parameters of the stereoscopic display device 10 to be measured include the distance T between adjacent view points, the distance D between the grating plate 11 and the display panel 12, and the width W of any sub-pixel 121, and the preset distance L is calculated according to the following relationship (4):

[0121]

[0122] It should be noted that, in the embodiment, in order to avoid the influence of light in the external environment on the measurement result, the stereoscopic display device 10 to be measured is placed in a dark room for crosstalk measurement.

[0123] In addition, due to the reflection efficiency problem of the receiving plate and the sensitivity problem of the spectrometer in actual operation, the actual calculated crosstalk deviation may be large, so it is necessary to first convert the crosstalk i / j distribution curve into the purity j / (j+i) distribution curve of the second color, and then calculate the main view point crosstalk corresponding to the peak position of the curve after smoothing processing. It can be understood that the above-mentioned data extraction calculation can be designed to be automatically completed by mathematical software.

[0124] It should be noted that the above description is only a specific implementation of the present application, and the present application is not limited to the above description. Figures 1-8 It can be understood that, compared with the relative value of brightness used to represent the crosstalk characteristics of the display device in the traditional crosstalk measurement method, the embodiment of the present application controls the stereoscopic display device 10 to be measured to display a preset planar color image, the preset planar color image includes N view point picture groups, each view point picture group includes N view point pictures, the Mth view point picture in the Mth view point picture group corresponds to the display of the first color, and the other view point pictures correspond to the display of the second color, wherein M is greater than or equal to 1, and M is less than or equal to N, N is a positive integer greater than or equal to 2, by obtaining the reference tristimulus value of the first color, the reference tristimulus value of the second color and the tristimulus value of the mixed color, and determining the crosstalk value of the stereoscopic display device 10 to be measured according to the tristimulus value of the mixed color, the reference tristimulus value of the first color and the reference tristimulus value of the second color, the steps of the crosstalk measurement method are simplified.

[0125] The embodiment also provides a crosstalk measurement device, which comprises a control module, a data conversion module and a data processing module.

[0126] The control module is configured to control the to-be-tested stereoscopic display device to display a preset planar color image, the preset planar color image comprises N view picture groups, each view picture group comprises N view pictures, the Mth view picture in the Mth view picture group corresponds to display a first color, and the other view pictures correspond to display a second color, where M is greater than or equal to 1, M is less than or equal to N, and N is a positive integer greater than or equal to 2.

[0127] The data conversion module is spaced apart from the to-be-tested stereoscopic display device by a preset distance, and obtains three-stimulus values of a mixed color generated by mixing the first color and the second color according to each stereoscopic view picture imaged by the to-be-tested stereoscopic display device.

[0128] The data processing module is configured to obtain reference three-stimulus values of the first color and the second color, and determine a crosstalk value of the to-be-tested stereoscopic display device according to the three-stimulus values of the mixed color, the reference three-stimulus values of the first color and the reference three-stimulus values of the second color.

[0129] In an embodiment, the data conversion module comprises a colorimeter, and it can be understood that the determination of the crosstalk value of the to-be-tested stereoscopic display device according to the three-stimulus values of the mixed color, the reference three-stimulus values of the first color and the reference three-stimulus values of the second color by using the colorimeter has been described in detail in the above embodiments, and will not be repeated here.

[0130] In an embodiment, the data conversion module comprises a receiving plate and an imaging spectrometer, and it can be understood that the determination of the crosstalk value of the to-be-tested stereoscopic display device according to the three-stimulus values of the mixed color, the reference three-stimulus values of the first color and the reference three-stimulus values of the second color by using the receiving plate and the imaging spectrometer has been described in detail in the above embodiments, and will not be repeated here.

[0131] In the above embodiments, the description of each embodiment has its own focus, and the parts not described in detail in a certain embodiment can be referred to the relevant description of other embodiments.

[0132] The above has carried out the detailed introduction to the method and the device for measuring the crosstalk provided by the embodiment of the application, the principle and the implementation mode of the application are described in the text by applying specific examples, the above embodiment is only used for helping understanding the technical scheme of the application and its core idea; the ordinary skilled in the art should understand that: it can still modify the technical scheme recorded by the foregoing each embodiment, or equivalent replacement is carried out to part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical scheme deviate from the scope of the technical scheme of the embodiments of the application.

Claims

1. A method of crosstalk measurement, characterized by, The crosstalk measurement method comprises the following steps: controlling a to-be-tested stereoscopic display device to display a preset planar color image, the preset planar color image comprising N view picture groups, each of the view picture groups comprising N view pictures, an Mth view picture in an Mth view picture group corresponding to display of a first color, and other view pictures corresponding to display of a second color, wherein M is greater than or equal to 1, and M is less than or equal to N, and N is a positive integer greater than or equal to 2; acquiring, at a preset distance from the to-be-tested stereoscopic display device, tristimulus values of a mixed color generated by mixing of the first color and the second color according to each stereoscopic view picture imaged by the to-be-tested stereoscopic display device; acquiring reference tristimulus values of the first color and the second color, and determining a crosstalk value of the to-be-tested stereoscopic display device according to the tristimulus values of the mixed color, the reference tristimulus values of the first color, and the reference tristimulus values of the second color, wherein the crosstalk value of the to-be-tested stereoscopic display device at the preset distance is calculated according to the following relationship (1), relationship (2), and relationship (3): The first ratio of i to j is given by the relationship (1) acquisition; The second ratio of i to j is given by relationship (2) acquisition; The third ratio of i to j is given by relationship (3) acquisition; wherein X is the X stimulus quantity of the mixed color, Y is the Y stimulus quantity of the mixed color, Z is the Z stimulus quantity of the mixed color; Xi is the X stimulus quantity of the first color, Yi is the Y stimulus quantity of the first color, Zi is the Z stimulus quantity of the first color; Xj is the X stimulus quantity of the second color, Yj is the Y stimulus quantity of the second color, Zj is the Z stimulus quantity of the second color; i is the attenuation coefficient of the first color; j is the attenuation coefficient of the second color. i Xi is the X stimulus quantity of the first color, Yi is the Y stimulus quantity of the first color, Zi is the Z stimulus quantity of the first color; Xj is the X stimulus quantity of the second color, Yj is the Y stimulus quantity of the second color, Zj is the Z stimulus quantity of the second color; i is the attenuation coefficient of the first color; j is the attenuation coefficient of the second color. i Xi is the X stimulus quantity of the first color, Yi is the Y stimulus quantity of the first color, Zi is the Z stimulus quantity of the first color; Xj is the X stimulus quantity of the second color, Yj is the Y stimulus quantity of the second color, Zj is the Z stimulus quantity of the second color; i is the attenuation coefficient of the first the crosstalk value of the to-be-tested stereoscopic display device is an average value of sums of each i / j in relationship (1), relationship (2), and relationship (3).

2. The crosstalk measurement method of claim 1, wherein, The step of acquiring the reference tristimulus values of the first color and the second color, and determining the crosstalk value of the to-be-tested stereoscopic display device according to the tristimulus values of the mixed color, the reference tristimulus values of the first color, and the reference tristimulus values of the second color comprises: acquiring, at the preset distance from the to-be-tested stereoscopic display device, a first pure color image displayed by the to-be-tested stereoscopic display device, the first pure color image displaying the first color; acquiring the reference tristimulus values of the first color according to the first pure color image; acquiring, at the preset distance from the to-be-tested stereoscopic display device, a second pure color image displayed by the to-be-tested stereoscopic display device, the first pure color image displaying the second color; acquiring the reference tristimulus values of the second color according to the second pure color image; determining the crosstalk value of the to-be-tested stereoscopic display device according to the tristimulus values of the mixed color, the reference tristimulus values of the first color, and the reference tristimulus values of the second color.

3. The crosstalk measurement method of claim 2, wherein, acquiring the first pure color image and the second pure color image at the preset distance from the to-be-tested stereoscopic display device by using a colorimeter; acquiring the reference tristimulus values of the first color according to the first pure color image by using the colorimeter; acquiring the reference tristimulus values of the second color according to the second pure color image by using the colorimeter.

4. The method of crosstalk measurement of claim 2, wherein, Before the step of controlling the to-be-tested stereoscopic display device to display a preset planar color image, the method further comprises: The preset distance is determined according to imaging parameters of the stereoscopic display device to be measured, wherein the stereoscopic display device to be measured comprises a display panel and a grating plate arranged oppositely, the display panel comprises a plurality of sub-pixels, and the imaging parameters of the stereoscopic display device to be measured comprise a distance T between adjacent view points, a distance D between the grating plate and the display panel, and a width W of any sub-pixel, and the preset distance L is calculated according to the following relation (4):

5. The method of crosstalk measurement of claim 1, wherein, The step of obtaining the tristimulus value of the mixed color generated by mixing the first color and the second color according to each stereoscopic view image imaged by the stereoscopic display device to be measured at a preset distance from the stereoscopic display device to be measured comprises: The tristimulus value of the mixed color generated by mixing the first color and the second color in each stereoscopic view image is detected by using a colorimeter at a preset distance from the stereoscopic display device to be measured.

6. The method of crosstalk measurement of claim 5, wherein, The step of obtaining the tristimulus value of the mixed color generated by mixing the first color and the second color according to each stereoscopic view image imaged by the stereoscopic display device to be measured at a preset distance from the stereoscopic display device to be measured comprises: A detection range is determined in a plane at a preset distance from the stereoscopic display device to be measured according to the position of the first color in each stereoscopic view image; The colorimeter is arranged in the detection range to determine the tristimulus value of the mixed color generated by mixing the first color and the second color.

7. The method of crosstalk measurement of claim 1, wherein, The step of obtaining the tristimulus value of the mixed color generated by mixing the first color and the second color according to each stereoscopic view image imaged by the stereoscopic display device to be measured at a preset distance from the stereoscopic display device to be measured comprises: A receiving plate is used to receive the projection image of each stereoscopic view image displayed by the stereoscopic display device to be measured, wherein the distance between the receiving plate and the stereoscopic display device to be measured is the preset distance; An imaging spectrometer is used to obtain the projection image, and the tristimulus value of the mixed color generated by mixing the first color and the second color is determined according to the projection image.

8. The method of crosstalk measurement of claim 1, wherein, The stereoscopic display device to be measured is placed in a dark room for crosstalk measurement.

9. A crosstalk measurement apparatus, characterized by comprising: Comprise: A control module is used to control the stereoscopic display device to be measured to display a preset planar color image, the preset planar color image comprises N view picture groups, each view picture group comprises N view pictures, the Mth view picture in the Mth view picture group corresponds to the first color, and the other view pictures correspond to the second color, wherein M is greater than or equal to 1, and M is less than or equal to N, and N is a positive integer greater than or equal to 2; A data conversion module is arranged at a preset distance from the stereoscopic display device to be measured, and is used to obtain the tristimulus value of the mixed color generated by mixing the first color and the second color according to each stereoscopic view image imaged by the stereoscopic display device to be measured. The data processing module is configured to acquire the reference tristimulus value of the first color and the reference tristimulus value of the second color, and determine the crosstalk value of the stereoscopic display device to be tested according to the tristimulus value of the mixed color, the reference tristimulus value of the first color and the reference tristimulus value of the second color, wherein the crosstalk value of the stereoscopic display device to be tested at the preset distance is calculated according to the following relation (1), relation (2) and relation (3): The first ratio of i to j is given by the relationship (1) acquisition; The second ratio of i to j is given by relationship (2) acquisition; The third ratio of i to j is given by relationship (3) acquisition; wherein X is the X stimulus quantity of the mixed color, Y is the Y stimulus quantity of the mixed color, Z is the Z stimulus quantity of the mixed color; Xi is the X stimulus quantity of the first color, Yi is the Y stimulus quantity of the first color, Zi is the Z stimulus quantity of the first color; Xj is the X stimulus quantity of the second color, Yj is the Y stimulus quantity of the second color, Zj is the Z stimulus quantity of the second color; i is the attenuation coefficient of the first color; j is the attenuation coefficient of the second color. i Xi is the X stimulus quantity of the first color, Yi is the Y stimulus quantity of the first color, Zi is the Z stimulus quantity of the first color; Xj is the X stimulus quantity of the second color, Yj is the Y stimulus quantity of the second color, Zj is the Z stimulus quantity of the second color; i is the attenuation coefficient of the first color; j is the attenuation coefficient of the second color. i Xi is the X stimulus quantity of the first color, Yi is the Y stimulus quantity of the first color, Zi is the Z stimulus quantity of the first color; Xj is the X stimulus quantity of the second color, Yj is the Y stimulus quantity of the second color, Zj is the Z stimulus quantity of the second color; i is the attenuation coefficient of the first The crosstalk value of the stereoscopic display device to be tested is the average value of the sum of each i / j in the relation (1), the relation (2) and the relation (3).

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