| 摘要 |
<p>Prediction information for encoding / decoding at least part of an image of an enhancement layer of video data is determined, the video data including the enhancement layer and a base layer, the enhancement layer consisting of processing blocks of size 2Nx2N and the base layer consisting of elementary prediction units (EPUs). For a processing block of the enhancement layer to be encoded, it is determined whether the base layer region spatially corresponding to the processing block is fully located within one base layer EPU. If so, prediction information is derived for that processing block from the base layer prediction information of the said one EPU. If not, and the base layer region spatially corresponding to the processing block overlaps, at least partially, multiple EPUs, the processing block is divided into sub-processing blocks. Each sub-processing block is of size NxN such that the base layer region spatially corresponding to each sub-processing block is fully located within one base layer EPU. Prediction information for each sub-processing block is derived from the base layer prediction information of the spatially corresponding EPU. Such an advance may be applicable to scalable video coding (SVC) according to the HEVC standard.</p> |
