发明授权
US5930387A Method and apparatus for encoding color image data using dynamic color
matching
失效
使用动态颜色匹配对彩色图像数据进行编码的方法和装置
- 专利标题: Method and apparatus for encoding color image data using dynamic color matching
- 专利标题(中): 使用动态颜色匹配对彩色图像数据进行编码的方法和装置
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申请号: US985197申请日: 1997-12-04
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公开(公告)号: US5930387A公开(公告)日: 1999-07-27
- 发明人: Allen M. Chan , Kok S. Chen
- 申请人: Allen M. Chan , Kok S. Chen
- 申请人地址: CA Cupertino
- 专利权人: Apple Computer, Inc.
- 当前专利权人: Apple Computer, Inc.
- 当前专利权人地址: CA Cupertino
- 主分类号: H04N1/64
- IPC分类号: H04N1/64 ; H04N1/46 ; G03F3/08
摘要:
The present invention is related to systems and methods for compressing image data while at the same time, improving both the compression ratio and the perceptibility of the decompressed image using a dynamic color matching scheme. Such features are achieved even when the image data is compressed without segregation into its scanned and non-scanned components. Color variant data is encoded using a dynamic color matching scheme to enhance the color fidelity of a decompressed image obtained from the encoded color variant data. As a result, improved perceptibility of decompressed images is achieved regardless of whether scanned images, non-scanned images or any combination thereof are collectively compressed. Such improved perceptibility is achieved regardless of whether the images are monochrome (having varying grey scale values) or color. In addition, improved perceptibility is realized in a manner which permits image data including scanned and/or unscanned images to be compressed in real-time.
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