发明名称 |
Spatial filtering for improving compression efficiency of motion compensated interframe coding |
摘要 |
An apparatus, method, and carrier medium carrying computer-readable code to implement a method that includes generating a difference picture of an accepted picture of a time sequence of pictures minus an estimate of the previous picture in the sequence. The generating of the difference picture includes forming quantized coefficients and passing the quantized coefficients via a prediction loop to generate the estimate of the previous picture. A spatial filter is applied to at least a component of the difference picture such that the forming of quantized coefficients is from a spatially filtered difference picture. The spatial filter is a noise reducing spatial filter configured such that there is a fixed delay between the filter input picture and the filter output picture. The fixed delay is significantly less than the time between consecutive pictures in the time sequence.
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申请公布号 |
US2007092000(A1) |
申请公布日期 |
2007.04.26 |
申请号 |
US20050255543 |
申请日期 |
2005.10.21 |
申请人 |
CHEN WEN-HSIUNG;GRAHAM PHILIP R |
发明人 |
CHEN WEN-HSIUNG;GRAHAM PHILIP R. |
分类号 |
H04N11/04;H04B1/66 |
主分类号 |
H04N11/04 |
代理机构 |
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地址 |
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