METHOD AND APPARATUS FOR CODING VIDEO AND METHOD APPARATUS FOR DECODING VIDEO, ACCOMPANIED WITH INTRA PREDICTION

摘要

A video decoding method involving intra prediction includes: parsing a most probable mode (MPM) flag of a block while parsing symbols of the block of an encoded video from a received bitstream; determining whether a predetermined number of a plurality of candidate intra prediction modes are used to predict an intra prediction mode of the block based on the MPM flag; when it is determined that the plurality of candidate intra prediction modes are used based on the MPM flag, determining the plurality of candidate intra prediction modes based on intra prediction modes of a left block and an upper block that are adjacent to the block while restoring the intra prediction mode of the block by using the parsed symbols.

主权项

1. A method of decoding a video data, the method comprising:
obtaining, from a bitstream, a mode prediction flag indicating whether intra prediction modes of neighboring blocks are used to determine an intra prediction mode of a current block; when the mode prediction flag indicates that the intra prediction modes of neighboring blocks are used, parsing, from the bitstream, a mode index indicating one among a plurality of candidate intra prediction modes included in a candidate list; when intra modes of a left block and an upper block among the neighboring blocks are different from each other, determining the candidate list including the intra modes of the left block and the upper block; and performing intra prediction on the current block using a prediction mode, indicated by the mode index, among the candidate intra prediction modes included in the candidate list.