| 摘要 |
The present invention relates to encoding and decoding of image and video data, and in particular to a new spatial prediction mode for predicting a block of image data from image data of previously encoded/decoded blocks. According to this prediction mode, blocks containing sharp edges may be predicted more faithfully by taking the precise direction of the edge into account. Moreover, the new prediction mode does not require any additional signaling overhead, because (i) the direction of the edge is estimated from previously encoded blocks and (ii) the new prediction mode replaces the conventional DC mode for blocks containing sharp edges. |
