发明申请
- 专利标题: VIDEO ENCODING/DECODING METHOD AND APPARATUS
- 专利标题(中): 视频编码/解码方法和装置
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申请号: US11561079申请日: 2006-11-17
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公开(公告)号: US20070116125A1公开(公告)日: 2007-05-24
- 发明人: Naofumi Wada , Tomoya Kodama
- 申请人: Naofumi Wada , Tomoya Kodama
- 优先权: JP2005-338775 20051124
- 主分类号: H04N11/02
- IPC分类号: H04N11/02
摘要:
A video encoding method includes subjecting an input video image to motion compensated temporal filtering using a motion compensated temporal filter to produce a low-pass filtered image, quantizing a transform coefficient of the low-pass filtered image, encoding a quantized transform coefficient, calculating a weight to be given to a low-pass filter coefficient of a low-pass filter of the motion compensated temporal filter according to coarseness of quantization and a magnitude of a motion compensated error, and controlling a high band stopping characteristic of the low-pass filter according to the low-pass filter coefficient weighted by the weight, wherein the controlling controls the high band stopping characteristic of the low-pass filter to provide a positive correlation with respect to the quantization parameter and provide a negative correlation with respect to the magnitude of the motion compensated error.
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