发明授权
US08326053B2 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
- 专利标题: Method and apparatus for block based image compression with multiple non-uniform block encodings
- 专利标题(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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申请号: US12485537申请日: 2009-06-16
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公开(公告)号: US08326053B2公开(公告)日: 2012-12-04
- 发明人: Konstantine Iourcha , Andrew S. C. Pomianowski , Raja Koduri
- 申请人: Konstantine Iourcha , Andrew S. C. Pomianowski , Raja Koduri
- 申请人地址: CA Markham, Ontario
- 专利权人: ATI Technologies ULC
- 当前专利权人: ATI Technologies ULC
- 当前专利权人地址: CA Markham, Ontario
- 代理机构: Faegre Baker Daniels LLP
- 主分类号: G06K9/36
- IPC分类号: G06K9/36
摘要:
A method and apparatus provides 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.
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