发明申请
US20050213835A1 Integer transform matrix selection method in video coding and related integer transform method
审中-公开
整数变换矩阵选择方法在视频编码和相关整数变换方法中的应用
- 专利标题： Integer transform matrix selection method in video coding and related integer transform method
- 专利标题（中）： 整数变换矩阵选择方法在视频编码和相关整数变换方法中的应用
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申请号： US11081829申请日： 2005-03-17
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公开(公告)号： US20050213835A1公开(公告)日： 2005-09-29
- 发明人: Zhu Guangxi , Tian Xiaohua , Wang Yao , Liu Wenyu , Yu Li
- 申请人： Zhu Guangxi , Tian Xiaohua , Wang Yao , Liu Wenyu , Yu Li
- 专利权人： HUAZHONG UNIVERSITY OF SCIENCE & TECHNOLOGY and SAMSUNG ELECTRONICS CO., LTD.
- 当前专利权人： HUAZHONG UNIVERSITY OF SCIENCE & TECHNOLOGY and SAMSUNG ELECTRONICS CO., LTD.
- 优先权： CN200410012857.1 20040318; KR10-2005-0018437 20050305
- 主分类号： G06F17/14
- IPC分类号： G06F17/14 ; G06T9/00 ; H03M7/30 ; H04N1/41 ; H04N19/107 ; H04N19/137 ; H04N19/60 ; H04N19/625 ; G06K9/36
摘要：
An integer transform method for image data compression in a video codec is provided. In compliance with the first Audio and Video Coding Standard (AVS) of China in which 8×8 DCT integer transform is adopted, an integer transform base selection method, which is used to evaluate the quality of transform bases with both de-correlation efficiency and energy concentration efficiency, is provided. Computation complexity is also considered in the selection procedure. Based on the method, two groups of 8×8 transform bases (5, 6, 4, 1) and (4, 5, 3, 1) are selected and a fast transform algorithm for these two groups is provided.