发明授权
US07574062B2 Image processing apparatus and method capable of finely adjusting data compression rate
失效
能够精细调整数据压缩率的图像处理装置和方法
- 专利标题: Image processing apparatus and method capable of finely adjusting data compression rate
- 专利标题(中): 能够精细调整数据压缩率的图像处理装置和方法
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申请号: US10495855申请日: 2003-06-03
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公开(公告)号: US07574062B2公开(公告)日: 2009-08-11
- 发明人: Yutaka Sato , Yukio Kadowaki , Kazuhiro Miyazaki
- 申请人: Yutaka Sato , Yukio Kadowaki , Kazuhiro Miyazaki
- 申请人地址: JP Tokyo
- 专利权人: Ricoh Company, Ltd.
- 当前专利权人: Ricoh Company, Ltd.
- 当前专利权人地址: JP Tokyo
- 代理机构: Cooper & Dunham, LLP
- 优先权: JP2002-187543 20020627
- 国际申请: PCT/JP03/07034 WO 20030603
- 国际公布: WO2004/004313 WO 20040108
- 主分类号: G06K9/36
- IPC分类号: G06K9/36
摘要:
An image processing apparatus includes a coding part that performs coding on image data based on the result of decomposing the image data into bit planes block by block, and a quantization part that reduces the values of the image data of a predetermined block to be compressed at an increased rate. The quantization part is provided at an earlier stage than the coding part.
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