Increasing gamma accuracy in quantized systems
View Patent ↗Embodiments for providing increased gamma accuracy in quantized display systems are herein described. Both system and method embodiments are provided to enhance image quality in three primary and multiprimary display systems.
1. A method of generating a spatial-temporal noise for a display system, the steps of said method comprising:
creating a plurality of first image frames, each said first image frame comprising a plurality of random colors, said plurality of random colors having a substantially constant luminosity throughout said first image frame and a random chrominance component, said plurality of random colors forming a white noise;
creating a plurality of second image frames, said second image frames comprising filtered image data from said plurality of said first image frames;
creating a plurality of third image frames according to a function of said first and said second image frames.
2. The method of claim 1 wherein said constant luminosity value is approximately 50 percent.
3. The method of claim 1 wherein said random colors are generated in L*ab space with substantially constant L* and substantially random a and b values.
4. The method of claim 3 wherein said random colors are converted from L*ab to one of a group, said group comprising: ROB space, RGBW space, RGBCW space and multiprimary color space.
5. The method of claim 1 wherein the step of creating a plurality of second image frames further comprises low pass filtering image data from said first image frames.
6. The method of claim 5 wherein said low pass filtering is spatially filtering.
7. The method of claim 5 wherein said low pass filtering is temporal filtering.
8. The method of claim 5 wherein said low pass filtering is spatial temporal filtering.
9. The method of claim 5 wherein said low pass filtering further comprises filtering with wrap around image data.
10. The method of claim 9 wherein said wrap around data comprises with one image frame.
11. The method of claim 9 wherein said wrap around data comprises data from the first frame of said first image data frames and the last frame of said first image data frames.
12. The method of claim 1 wherein the step of creating a plurality of third image frames further comprises subtracting said first image frames from said second image frames.
13. The method of claim 12 wherein the data of said third image frames are shifted and stored as positive values.
14. A method of generating a spatial-temporal noise for a display system, the steps of said method comprising:
creating a plurality of first image frames, each said first image frame comprising a plurality of random colors;
creating a plurality of second image frames, said second image frames comprising filtered image data from said plurality of said first image frames;
creating a plurality of third image frames, said third image frames comprising a function of said first and said second image frames and wherein said first image frames is subtracted from said second image frames.
15. The method of claim 14 wherein the data of said third image frames are shifted and stored as positive values.