METHODS AND APPARATUSES FOR ENCODING/DECODING HIGH RESOLUTION IMAGES

摘要

The invention relates to methods and apparatuses for encoding/decoding high resolution images, which involve setting the size of the prediction unit to be encoded to an expanded macro-block size in accordance with the temporal frequency characteristics or spatial frequency characteristics among pictures to be encoded, and performing motion prediction motion compensation, and transformation on the basis of a set prediction unit size. In addition, the methods and the apparatuses of the present invention involve dividing a macro-block having a pixel size of 32*32 or 64*64 into at least one partition on the basis of an edge, and performing encoding processes for each partition. Accordingly, encoding efficiency can be improved for high definition (HD) or higher resolution high-resolution images.

主权项

1. A method of encoding an image, the method comprising the steps of:
performing intra-prediction encoding by selectively using one of a plurality of prediction modes on a prediction unit to an input image so as to prediction-encode the input image; and performing transform, quantization, and entropy encoding on a residue to generate a bit stream, the residue being a difference between a prediction unit predicted by the intra prediction or inter prediction and a current prediction unit, wherein a coding unit has a recursive tree structure, the prediction unit corresponds to a leaf coding unit when the coding unit is split and reaches a maximum permissible depth, and a size of the minimum coding unit is included in a sequence parameter set.