公开(公告)号：US20240179333A1

公开(公告)日：2024-05-30

申请号：US18437997

申请日：2024-02-09

Applicant: ATI Technologies ULC

Inventor： Konstantine Iourcha ,  Andrew S.C. Pomianowski

IPC: H04N19/426 ,  G06T9/00 ,  H04N19/119 ,  H04N19/154 ,  H04N19/176 ,  H04N19/182 ,  H04N19/46 ,  H04N19/54 ,  H04N19/60 ,  H04N19/96

CPC classification number: H04N19/426 ,  G06T9/00 ,  H04N19/119 ,  H04N19/154 ,  H04N19/176 ,  H04N19/182 ,  H04N19/46 ,  H04N19/54 ,  H04N19/60 ,  H04N19/96

Abstract: A system and method for texture decompression is described. The method comprises receiving a compressed texture block including two or more disjoint subsets of data and decompressing the compressed texture block. The decompressing includes decompressing each of the two or more disjoint subsets in the compressed texture block to form texels. The two or more disjoint subsets include a first disjoint subset having a first set of color endpoints and a first index value for a first texel, and a second disjoint subset having a second set of color endpoints.

公开(公告)号：US20130315481A1

公开(公告)日：2013-11-28

申请号：US13954148

申请日：2013-07-30

Applicant: ATI Technologies ULC

Inventor： Konstantine Iourcha ,  Andrew S.C. Pomianowski ,  Raja Koduri

IPC: G06T15/04

CPC classification number: G06T15/04 ,  H04N19/96

Abstract: Embodiments of the present invention are directed to a method and apparatus for block based image compression with multiple non-uniform block encodings. In one embodiment, an image is divided into blocks of pixels. In one embodiment the blocks are four pixels by four pixels, but other block sizes are used in other embodiments. In one embodiment, a block of pixels in the original image is compressed using two different methods to produce a first and second compressed block. Thus, each block in the original image is represented by two, typically different, compressed blocks. In one embodiment, color associated with a pixel is determined by combining the compressed information about the pixel in the first compressed block with information about the pixel in the second compressed block. In another embodiment, global information about the image is combined with the information in the first and second compressed blocks.