Invention Grant
US07643679B2 Method and apparatus for block based image compression with multiple non-uniform block encodings
有权
用于具有多个非均匀块编码的基于块的图像压缩的方法和装置
- Patent Title: Method and apparatus for block based image compression with multiple non-uniform block encodings
- Patent Title (中): 用于具有多个非均匀块编码的基于块的图像压缩的方法和装置
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Application No.: US10778902Application Date: 2004-02-13
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Publication No.: US07643679B2Publication Date: 2010-01-05
- Inventor: Konstantine Iourcha , Andrew S. C. Pomianowski , Raja Koduri
- Applicant: Konstantine Iourcha , Andrew S. C. Pomianowski , Raja Koduri
- Applicant Address: CA Markham, Ontario
- Assignee: ATI Technologies ULC
- Current Assignee: ATI Technologies ULC
- Current Assignee Address: CA Markham, Ontario
- Agency: Vedder Price, P.C.
- Main IPC: G06K9/36
- IPC: G06K9/36

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.
Public/Granted literature
- US20040228527A1 Method and apparatus for block based image compression with multiple non-uniform block encodings Public/Granted day:2004-11-18
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