US 2022/0067977 A1 · RATE CONTROLLED IMAGE AND TEXTURE DATA COMPRESSION

Abstract

In one embodiment, a computing system may access color components of a pixel region in an image, and then determine a color variance for each of the color components. The computing system may further determine a desired bit allocation for each of the color components based on the color variance associated with that color component. The computing system may then determine a total bit allocation for the pixel region based on the desired bit allocations for the color components, as well as a number of unallocated bits available for allocation. The computing system may further determine a final bit allocation for each of the color components by allocating the total bit allocation to each of the color components according to the desired bit allocation for each of the color components. The computing system may then encode each of the color components using the associated final bit allocation.

Claims20

Dependent claims

A method implemented by a computing system, the method comprising:

accessing color components of a pixel region in an image, the color components comprising a first component, a second component, and a third component;
determining a color variance for each of the color components of the pixel region;
determining a desired bit allocation for each of the color components of the pixel region based on the color variance associated with that color component;
determining a total bit allocation for the pixel region based on the desired bit allocations for the color components of the pixel region and a number of unallocated bits available for allocation;
determining a final bit allocation for each of the color components by allocating the total bit allocation for the pixel region to each of the color components of the pixel region according to the desired bit allocation for each of the color components;
and
encoding each of the color components of the pixel region using the associated final bit allocation.

4 more elements

A system comprising:

one or more non-transitory computer-readable storage media including instructions;
and
one or more processors coupled to the storage media, the one or more processors configured to execute the instructions to:
access color components of a pixel region in an image, the color components comprising a first component, a second component, and a third component;
determine a color variance for each of the color components of the pixel region;
determine a desired bit allocation for each of the color components of the pixel region based on the color variance associated with that color component;
determine a total bit allocation for the pixel region based on the desired bit allocations for the color components of the pixel region and a number of unallocated bits available for allocation;
determine a final bit allocation for each of the color components by allocating the total bit allocation for the pixel region to each of the color components of the pixel region according to the desired bit allocation for each of the color components;
and
encode each of the color components of the pixel region using the associated final bit allocation.

7 more elements

A non-transitory computer-readable medium comprising

instructions that, when executed by one or more processors of a computing system, cause the one or more processors to:
access color components of a pixel region in an image, the color components comprising a first component, a second component, and a third component;
determine a color variance for each of the color components of the pixel region;
determine a desired bit allocation for each of the color components of the pixel region based on the color variance associated with that color component;
determine a total bit allocation for the pixel region based on the desired bit allocations for the color components of the pixel region and a number of unallocated bits available for allocation;
determine a final bit allocation for each of the color components by allocating the total bit allocation for the pixel region to each of the color components of the pixel region according to the desired bit allocation for each of the color components;
and
encode each of the color components of the pixel region using the associated final bit allocation.

5 more elements

Dependencies are inferred from the claim text.

Rate controlled image and texture data compression

Life of this patent

Rate controlled image and texture data compression

Life of this patent

Abstract

Claims20