发明名称 |
ADAPTIVE INTERPOLATION FILTERS FOR VIDEO CODING |
摘要 |
<p>In encoding or decoding a video sequence having a sequence of video frames, interpolation filter coefficients for each frame or macroblock are adapted so that the non- stationary properties of the video signal are captured more accurately. A filter-type selection block in the encoder is used to determine the filter-type for use in the adaptive interpolation filter (AIF) scheme by analyzing the input video signal. Filter-type information is transmitted along with filter coefficients to the decoder. This information specifies, from a pre-defined set of filter types, what kind of interpolation filter is used. The number of filter coefficients that is sent depends on the filter-type. This number is pre-defined for each filter-type. Based on the filter-type and the filter coefficients, a filter constructing block in the decoder constructs the interpolation filter.</p> |
申请公布号 |
WO2008038238(A2) |
申请公布日期 |
2008.04.03 |
申请号 |
WO2007IB53913 |
申请日期 |
2007.09.26 |
申请人 |
NOKIA CORPORATION;NOKIA INC.;UGUR, KEMAL;LAINEMA, JANI |
发明人 |
UGUR, KEMAL;LAINEMA, JANI |
分类号 |
H04N7/26 |
主分类号 |
H04N7/26 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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