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. An apparatus for decoding an image comprising:
an inverse-transforming unit configured to restore a residue by entropy-decoding a received bit stream and by performing inverse quantization and inverse transform on the residue; an intra predicting unit configured to generate a prediction unit by performing intra-prediction encoding that selectively uses one of a plurality of prediction modes on a prediction unit; and an adder configured to restore the image by adding the residue to the prediction, wherein the prediction unit corresponds to a leaf coding unit when a 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.