| 摘要 |
<P>PROBLEM TO BE SOLVED: To disclose a video decoder (300), encoder (500) and corresponding methods for processing video signal data for an image block and a particular reference image index to predict the image block, that utilize adaptive weighting of reference images to enhance video compression. <P>SOLUTION: The decoder (300) includes a reference weighting factor device (380) for determining a weighting factor corresponding to a specific reference image index, the encoder (500) includes a reference image weighting factor assignor (572) for assigning a weighting factor corresponding to the particular reference image index, and a method for decoding includes the steps of: receiving a reference image index with the data that correspond to the image bloc; determining a weighting factor for each received reference image index; retrieving a reference image for each index; motion-compensating the retrieved reference image; and multiplying the motion compensated reference image by the corresponding weighting factor to form a weighted motion-compensated reference image. <P>COPYRIGHT: (C)2010,JPO&INPIT |
