2D NON-SEPARABLE INTERPOLATION FILTERS FOR SPATIALLY SCALABLE VIDEO CODING

摘要

SVC introduces IntraBL mode to reduce the redundancy between the reconstructed low resolution frame and the original high resolution frame. Currently the AVC 6-tap Wiener interpolation filter is used for the upsampling. The invention provides an improvement of the coding efficiency of the enhancement layer, especially the coding efficiency of the intra coded frames, by employing adaptive 2D non-separable or 1D separable upsampling filters. Optimization techniques such as least-square fitting give the optimal solution based on the SSD (Sum of Square Differences). The filters are recorded into the bit-stream and give better prediction of the high-resolution pictures, judged by distortion.