Patent ID: 11915667
Assignee: BOE TECHNOLOGY GROUP CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 17:
18. The system according to claim 15, wherein the corrected pixel value comprises: a red component, a green component and a blue component; the system further comprises a colorimeter and a signal generator, and each color component in the plurality of original pixel values is a natural number multiple of X, and X=2t, X being a positive integer and t being a natural number;
wherein the display device is configured to:
when an absolute value of a difference between an abscissa of the third chroma and an abscissa of the fourth chroma is greater than an abscissa of the chroma difference threshold, increase the red component and decrease the blue component in response to the abscissa of the third chroma being greater than the abscissa of the fourth chroma; or, decrease the red component and increase the blue component in response to the abscissa of the third chroma being less than the abscissa of the fourth chroma;
when an absolute value of a difference between an ordinate of the third chroma and an ordinate of the fourth chroma is greater than an ordinate of the chroma difference threshold, increase the green component in response to the ordinate of the third chroma being greater than the ordinate of the fourth chroma; or, decrease the green component in response to the ordinate of the third chroma being less than the ordinate of the fourth chroma;
acquire a converted image based on the to-be-displayed image and an EOTF, wherein pixels in the to-be-displayed image correspond one-to-one to pixels in the converted image, and a pixel value of a pixel in the converted image is determined based on a corresponding pixel and the EOTF;
acquire a corrected converted image by performing a correction process on the converted image based on the target look-up table; wherein the correction process comprises: when the converted image comprises a coarsely corrected pixel value and the plurality of original pixel values do not comprise the coarsely corrected pixel value, determining, in the target look-up table, adjacent pixel values of the coarsely corrected pixel value in the plurality of original pixel values; acquiring the corrected pixel value of the coarsely corrected pixel value by processing corrected pixel values corresponding to the adjacent pixel values in the target look-up table with a trilinear interpolation method; correcting the coarsely corrected pixel value to be the corrected pixel value of the coarsely corrected pixel value; when the converted image comprises an accurately corrected pixel value and the plurality of original pixel values comprise the accurately corrected pixel value, correcting the accurately corrected pixel value to be a corrected pixel value corresponding to the accurately corrected pixel value in the target look-up table; and
acquire a corrected to-be-displayed image based on the corrected converted image and an OETF, wherein pixels in the corrected to-be-displayed image correspond one-to-one to pixel in the corrected converted image, and a pixel value of a pixel in the corrected to-be-displayed image is determined based on a corresponding pixel and the OETF;
wherein updating the corrected pixel value corresponding to any original pixel value further comprises:
acquiring the pixel value of the third pixel based on the original pixel value and the OETF;
acquiring the third chroma based on the pixel value of the third pixel;
sending the pixel value of the third pixel to the signal generator;
acquiring a target signal that is generated by the signal generator and carries the pixel value of the third pixel;
acquiring the original pixel value based on the pixel value of the third pixel carried by the target signal and the EOTF;
determining the corrected pixel value corresponding to the original pixel value in the initial look-up table;
acquiring the pixel value of the fourth pixel based on the corrected pixel value and the OETF;
displaying the fourth pixel based on the pixel value of the fourth pixel; and
acquiring the fourth chroma detected by the colorimeter;
wherein the signal generator is configured to generate the target signal; and
the colorimeter is configured to detect the fourth chroma of the fourth pixel.