| 摘要 |
PROBLEM TO BE SOLVED: To provide an image encoding device, an image decoding device, an image encoding method, an image decoding method and a bitstream which are capable of reducing locally occurring prediction errors and improving the image quality.SOLUTION: When carrying out an intra-frame prediction process to generate an intra prediction image by using an already encoded image signal in a frame, an intra prediction part 4 refers to a table for filter selection to select a filter from one or more filters which are prepared in advance according to the states of various parameters associated with the encoding of a target block to be filtered, and carries out a filtering process on the prediction image by using the filter. As a result, locally occurring prediction errors can be reduced, and the image quality can be improved.SELECTED DRAWING: Figure 1 |
