METHOD FOR ENCODING/DECODING HIGH-RESOLUTION IMAGE AND DEVICE FOR PERFORMING SAME

摘要

A method for encoding/decoding high-resolution image and a device for performing the same set the size of an extended macro-block as the size of a prediction unit to be encoded, according to a temporal frequency feature or a spacial frequency feature found there between at least one picture to be encoded, perform motion prediction and motion compensation using the set prediction unit size unit, and perform the conversion thereof. Also, a macro-block having 32×32 pixel or 64×64 pixel size is divided into at least one partition based on an edge, and encoding is performed on each of the divided partitions afterwards. Therefore, encoding efficiency for high definition (HD) or higher resolution images is enhanced.

主权项

1. An image decoding apparatus comprising:
an entropy decoder configured to decode a received bit stream to generate header information; a motion compensation unit configured to generate a prediction block by performing motion compensation on a prediction unit based on information of the prediction unit obtained from the header information; an inverse quantization unit configured to inverse quantize the received bit stream; an inverse transform unit configured to obtain a residual value by performing inverse transforming on inverse quantized data; and an adder configured to add the residual value to the prediction block to reconstruct an image, wherein the prediction unit corresponds to a leaf coding unit when a coding unit is split and reaches a maximum permissible depth, and the coding unit has a recursive tree structure, and wherein a partition splitting is achieved by an asymmetric partitioning when the prediction unit is split.