METHOD AND APPARATUS OF ENCODING/DECODING IMAGE BASED ON INTRA PREDICTION

摘要

An intra prediction encoding/decoding method for an image and an apparatus thereof are provided to determine the scan order for sub blocks based on an edge existing in the current block which is divided into the plural sub blocks, adaptively and efficiently perform the intra prediction in the determined scan order. An intra prediction encoding method comprises the following steps of: determining the scan order for sub blocks based on an edge which exists in the current block divided into the plural sub blocks(1210); generating a predicted block by performing the intra prediction for the current block in the determined scan order by referring to previously encoded blocks which are adjacent to the current block(1220); and encoding the residual block which is difference between the predicted block and the current block(1230).