- 专利标题： Image processing apparatus
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申请号： US872050申请日： 1992-04-22
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公开(公告)号： US5189530A公开(公告)日： 1993-02-23
- 发明人: Akio Fujii
- 申请人： Akio Fujii
- 申请人地址： JPX Tokyo
- 专利权人： Canon Kabushiki Kaisha
- 当前专利权人： Canon Kabushiki Kaisha
- 当前专利权人地址： JPX Tokyo
- 优先权： JPX3-092288 19910423
- 主分类号： H03M7/40
- IPC分类号： H03M7/40 ; G06T9/00 ; H04N1/41 ; H04N11/04 ; H04N11/06 ; H04N11/24 ; H04N19/126 ; H04N19/134 ; H04N19/192 ; H04N19/196 ; H04N19/436 ; H04N19/60 ; H04N19/625 ; H04N19/85 ; H04N19/91
摘要：
The invention is intended to improve image quality in a process of image coding. In an apparatus for quantizing conversion data resulted from converting image information into frequency regions and then coding the quantized data, a coefficient to be multiplied by a chrominance quantizing matrix is set depending on a coefficient to be multiplied by a luminance quantizing matrix for an improvement in color reproducibility.
公开/授权文献
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