Patent ID: 9445098
Filing Date: 2016-09-13
CPC Classification: H04N

Claim Text:
1. A method for decoding a video comprising: extracting mode information for predicting a current block from encoded data; deriving a set of candidate intra-prediction modes including at least three candidate intra-prediction modes, depending on the current block; determining a candidate intra-prediction mode selected from the derived set of candidate intra-prediction modes as the intra-prediction mode of the current block without comparing mode numbers of candidate intra-prediction modes included in the derived set each other, when the mode information indicates a first encoding mode; determining the intra-prediction mode of the current block by using a prediction mode identification information, when the mode information indicates a second encoding mode and includes the prediction mode identification information; generating a prediction block by predicting the current block based on the determined intra-prediction mode of the current block, and decoding the encoded data to produce a residual block; and reconstructing the current block by adding the residual block to the prediction block.