Patent ID: 9532065
Filing Date: 2016-12-27
CPC Classification: H04N

Claim Text:
1. A video decoding apparatus for decoding a current block larger than 16×16, the apparatus comprising: a decoder configured to an inverse quantizing/transforming unit configured to reconstruct a residual block corresponding to each of the transform blocks by inverse-quantizing/transforming the transformed/quantized residual block in the unit of the transform sizes of the transform blocks variably determined based on the size of the current block and the information on the transform type; a predictor configured to generate a predicted block by an intra-prediction; an adder configured to reconstruct the current block by adding the reconstructed residual block and the predicted block; and a filtering unit configured to filter a transform boundary between a transform block in the reconstructed current block and an adjacent transform block by identifying the transform boundary according to the transform sizes of the transform blocks variably determined based on the size of the current block and the information on the transform type, wherein the transformed/quantized residual block is divided into the transform blocks, by identifying whether the transformed/quantized residual block is divided into a plurality of transform blocks and then recursively identifying whether each of divided transform blocks is further divided, depending on the information on the transform type, and wherein the decoder is configured to reconstruct the transformed/quantized residual block by scanning transform coefficients corresponding to each of the transform blocks in the transformed/quantized residual block according to a scanning pattern corresponding to each of the transform blocks, wherein the scanning pattern is determined based on the size of each of the transform blocks.