| 摘要 |
Pixel blocks forming an image (1201) are encoded (and/or subsequently decoded), each block being encoded according to one of a plurality of modes. Vectors (e.g. motion vectors, displacement vectors or block vectors) are encoded using at least two modes. One of a plurality of displacement vector coding methods (1203) (e.g. Exponential Golomb code) is selected. A pixel block is then encoded according to a first mode (1207) (e.g. Intra, Intra block copy or String Matching mode) using the selected method, while another pixel block is encoded according to a second mode (1206) (e.g. Inter mode) also using the selected method. Encoding resources are therefore shared by different prediction modes with no encoding performance reduction. Also disclosed is pixel block encoding (and/or subsequent decoding) wherein each block is encoded according to one of a plurality of modes, at least one mode comprising the encoding of a two dimensional displacement vector. The vector is encoded based on the encoding of a syntax element corresponding to a displacement vector residual, wherein the encoding of the vector is realized according to a specific displacement vector encoding method for a given size of pixel block different to that used for other pixels block sizes. |
