METHOD AND APPARATUS FOR ENCODING AND DECODING VIDEO

摘要

A method and an apparatus for decoding and encoding images are provided to more efficiently use a peripheral pixel value or a block of a reference image by using a block of a certain type capable of increasing the number of adjacent peripheral blocks in intra prediction instead of an existing quadrilateral block-based coding method. An image dividing unit(101) divides a picture to be encoded into blocks of a certain shape so that the number of reference adjacent blocks in intra prediction is at least 3. An encoding unit, having a spatial-temporal prediction unit(110), a transform unit(120), a quantization unit(122), and an entropy coding unit(126), performs encoding according to a certain scan order so that at least 3 adjacent blocks are used in the intra prediction of the divided blocks.