MOVING IMAGE ENCODING DEVICE, MOVING IMAGE DECODING DEVICE, MOVING IMAGE CODING METHOD, AND MOVING IMAGE DECODING METHOD

摘要

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 selects 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 a prediction image by using the filter. As a result, prediction errors which occur locally can be reduced, and the image quality can be improved.

主权项

1. An image decoding device comprising:
an intra prediction unit for carrying out an intra-frame prediction process on a coding block which is a unit for prediction process to generate a prediction image, when a coding mode for said coding block is an intra coding mode, wherein said intra prediction unit carries out a process of generating an intermediate predicted value from reference samples according to an intra prediction parameter indicating a type of intra prediction and obtaining a final predicted value by filtering the intermediate predicted value according to a block size of said block.