Patent ID: 8971650
Filing Date: 2015-03-03
Classification: G06T,H04N

Abstract:
1. An image decoding method comprising: splitting a picture into a plurality of maximum coding units using information about a size of the plurality of maximum coding units; determining coding units having a hierarchical structure in a maximum coding unit among the plurality of maximum coding units using split information of a coding unit among the coding units, determining at least one prediction unit for predicting a coding unit among the coding units using information about a partition type; determining at least one transformation unit for inversely transforming the coding unit using split information of a transformation unit among the at least one transformation unit, wherein the split information of a coding unit, the information about a partition type and the split information of a transformation unit are parsed from a bitstream; parsing from the bitstream transformation coefficients generated by transformation according to the at least one transformation unit generated by dividing the coding unit; reconstructing a residual of the at least one transformation unit by performing inverse quantization and inverse transformation on the parsed transformation coefficients; performing intra prediction or inter prediction on the at least one prediction unit to generate a predictor; and reconstructing the image based on the residual and the predictor, wherein the coding units are split hierarchically according to depths of the coding units, and wherein a size of the at least one transformation unit in the coding unit is determined independently from a size of the at least one prediction unit in the coding unit.