Constrained color palette for multi-primary display devices
AssigneeQUALCOMM MEMS Technologies, Inc.
InventorsHuanzhao Zeng, Jian J. Ma
Life of this patent
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Abstract
This disclosure provides systems, methods and apparatus, including computer programs encoded on computer storage media, for displaying high bit-depth images using temporal modulation on display devices including display elements that have multiple primary colors. In order to reduce visual artifacts produced by angular metamerism, the display elements are configured to display only those combinations of the different primary colors that satisfy certain constraints. Color combinations of the multiple primary colors that satisfy these constraints are included in a constrained color palette that includes fewer than all the possible colors that can be provided by all combinations of the primary colors.
Claims23
A computer-implemented method to generate a color palette for temporal modulation in digital imaging, the method comprising:
- under control of a hardware computing device:
- identifying a set of M primary colors that can be produced by a display element, the set of primary colors including black and white, wherein the set includes M minus 2 non-white and non-black color primaries, wherein M is at least 6;
- generating the color palette, wherein the color palette includes color combinations produced by selecting N primary colors from the identified set of M primary colors, wherein N represents a number of sub-frames for temporal modulation and N is less than M;
- generating a constrained color palette from the color palette, wherein the generating includes:
- for each color combination in the color palette:
- adding a respective color combination to the constrained color palette if
- each non-white and non-black color primary in the respective color combination, is within a neighborhood of each other non-white and non-black color primary in the respective color combination;
- and
- providing the constrained color palette for use in a temporal modulation scheme.
A non-transitory computer storage medium comprising instructions that when executed by a processor cause the processor to perform a method to generate a color palette for temporal modulation in digital imaging, the method comprising:
- identifying a set of M primary colors that can be produced by a display element, the set of primary colors including black and white, wherein the set includes M minus 2 non-black and non-white color primaries, wherein M is at least 6;
- generating the color palette, wherein the color palette includes color combinations produced by selecting N primary colors from the identified set of M primary colors, wherein N represents a number of sub-frames for temporal modulation and N is less than M;
- generating a constrained color palette from the color palette, wherein the generating includes:
- for each color combination in the color palette:
- adding a respective color combination to the constrained color palette if:
- each non-black and non-white color primary in the respective color combination, is within a neighborhood of each other non-black and non-white color primary in the respective color combination;
- and
- providing the constrained color palette for use in a temporal modulation scheme.
Dependencies are inferred from the claim text.