Method and system for detecting visual artefact of near-eye display
A method and a system for detecting a visual artefact of near-eye display are provided. The method includes generating a plurality of sub-test patterns, each of the sub-test patterns corresponding to a portion of pixels of a source pixel array of the near-eye display being turned on, and a full test pattern comprising all the plurality of sub-test patterns corresponds to each of the pixels of the source pixel array being turned on at least once; obtaining a plurality of sub-virtual images corresponding to the plurality of sub-test patterns; obtaining a final virtual image by integrating the plurality of sub-virtual images; and detecting the visual artefact, if any, based on the final virtual image.
1 . A method for detecting a visual artefact of near-eye display, comprising:
generating a plurality of sub-test patterns, each of the sub-test patterns corresponding to a portion of pixels of a source pixel array of the near-eye display being turned on, and a full test pattern comprising all the plurality of sub-test patterns corresponds to each of the pixels of the source pixel array being turned on at least once;
obtaining a plurality of sub-virtual images corresponding to the plurality of sub-test patterns;
obtaining a final virtual image by integrating the plurality of sub-virtual images; and
detecting the visual artefact, if any, based on the final virtual image.
2 . The method according to claim 1 , wherein generating the plurality of sub-test patterns further comprises:
dividing the source pixel array into two or more zones, each of the zones comprising a plurality of pixels; and
obtaining the plurality of sub-test patterns, the sub-test pattern corresponding to one pixel turned on in each of the zones.
3 . The method according to claim 2 , wherein generating the plurality of sub-test patterns further comprises:
turning on the one pixel in each of the zones in a preset order.
4 . The method according to claim 2 , wherein the two or more zones are divided equally, each of the zones comprising a same number of pixels.
5 . The method according to claim 4 , wherein each of the zones has a same shape.
6 . The method according to claim 5 , wherein generating the plurality of sub-test patterns further comprises:
turning on the one pixel in each of the zones in a same order.
7 . The method according to claim 1 , wherein in each of the sub-test patterns, a distance between two adjacent turned-on pixels is greater than a distance between two adjacent pixels.
8 . The method according to claim 1 , wherein obtaining the plurality of sub-virtual images corresponding to the plurality of sub-test patterns further comprises:
rendering a sub-virtual image for a sub-test pattern and capturing the sub-virtual image; and
repeating the rendering and the capturing until all the plurality of sub-test patterns have been performed.
9 . The method according to claim 1 , wherein the sub-virtual image is obtained by a light measuring device (LMD).
10 . The method according to claim 1 , wherein detecting the visual artefact based on the final virtual image further comprises:
obtaining optical characteristics of the final virtual image; and
detecting the visual artefact based on the optical characteristics.
11 . The method according to claim 10 , wherein the optical characteristics comprises luminance and/or chromaticity.
12 . The method according to claim 1 , wherein the visual artefact is detected at a pixel level.
13 . A system for detecting a visual artefact of near-eye display comprising:
a light measuring device (LMD) configured to:
obtain a plurality of sub-virtual images corresponding to a plurality of sub-test patterns; and
detect the visual artefact based on a final virtual image; and
a processor configured to:
generate a plurality of sub-test patterns, each of the sub-test patterns corresponding to a portion of pixels of a source pixel array of the near-eye display being turned on, and a full test pattern comprising all the plurality of sub-test patterns corresponds to each of the pixels of the source pixel array being turned on at least once; and
integrate the plurality of sub-virtual images to obtain the final virtual image.
14 . The system according to claim 13 , wherein the near-eye display comprises a source pixel array, and the processor is further configured to:
divide the source pixel array into two or more zones, each of the zones comprising a plurality of pixels; and
obtain the plurality of sub-test patterns, the sub-test pattern corresponding to one pixel turned on in each of the zones.
15 . The system according to claim 14 , wherein the processor is configured to generate the plurality of sub-test patterns by turning on the one pixel in each of the zones in a preset order.
16 . The system according to claim 14 , wherein the two or more zones are divided equally, each of the zones comprising a same number of pixels.
17 . The system according to claim 16 , wherein each of the zones has a same shape.
18 . The system according to claim 17 , the processor is configured to generate the plurality of sub-test patterns by turning on the one pixel in each of the zones in a same order.
19 . The system according to claim 13 , wherein the near-eye display is further configured to render a sub-virtual image for a sub-test pattern; the LMD is configured to capture the sub-virtual image; and the system further comprises a driver configured to control the near-eye display and LMD to repeat the rendering and the capturing until all the plurality of sub-test patterns have been performed.
20 . The system according to claim 13 , wherein the LMD is further configured to:
obtain optical characteristics of the final virtual image; and
detect the visual artefact based on the optical characteristics.
21 . The system according to claim 20 , wherein the optical characteristics comprises luminance and/or chromaticity.
22 . The system according to claim 13 , wherein the visual artefact is detected at a pixel level.