US 11,153,578 B2 · Gradient texturing compression codec

Abstract

Systems, apparatuses, and methods for performing computation-efficient encoding of video or image frames are disclosed. An encoder partitions a video or image frame into a plurality of sub-frame blocks. For each sub-frame block, the encoder selects a subset of the original pixel values based on one or more criteria. In a first mode, the encoder selects the corners of the sub-frame block. Then, the encoder generates encoding vectors to represent the pixels in between pairs of the selected subset of pixel values. The encoder includes the original pixel values of the selected subset in the encoded block that represents the original sub-frame block. The encoder also includes the encoding vectors in the encoded block, wherein the encoding vectors are calculated based on the color parameter differences between each pair of the selected subset of pixel values. The encoder also includes metadata specifying the encoding mode in the encoded block.

Claims20

Dependent claims

A system comprising:

an encoder coupled to a memory, wherein the encoder comprises circuitry configured to:
receive an uncompressed sub-frame block comprising a plurality of N pixels, wherein N is a positive integer;
select M pixels from the uncompressed sub-frame block based on one or more criteria, wherein M is a positive integer less than N;
store original, uncompressed, pixel component values of the M selected pixels as received in the uncompressed sub-frame block in a compressed block, wherein the compressed block represents an encoded version of the sub-frame block;
generate indices for (N-M) other pixels of the sub-frame block;
store indices for the (N-M) other pixels in the compressed block;
and
generate an indication that the compressed block is ready.

5 more elements

Dependencies are inferred from the claim text.

Gradient texturing compression codec

Life of this patent

Gradient texturing compression codec

Life of this patent

Abstract

Claims20