Patent ID: 9197897
Filing Date: 2015-11-24
Classification: H04N

Abstract:
1. An image encoding method, comprising: determining, by a coding mode determiner, a size and a prediction mode of each predictive coding block for image or video data; transforming and quantizing, by a transform/quantization unit, a residual block generated by intra prediction to generate a quantized block; inversely quantizing and inversely transforming, by an inverse quantization/transform unit, the quantized block; performing, by a deblocking filter, a deblocking filtering process to image data received from the inverse quantization/transform unit; determining, by an intra predictor, an intra prediction mode; generating, by the intra predictor, a prediction block according to the intra prediction mode; and entropy-coding, by an entropy coder, quantized coefficients of the quantized block, wherein, when a size of the quantized block is equal to 8×8, the coefficients of the quantized block are divided into a plurality of subsets, and the plurality of subsets are scanned according to a scan pattern determined by the intra prediction mode and coefficients of each subset are scanned according to the scan pattern determined by the intra prediction mode to be entropy-coded.