Image encoding/decoding method and device

摘要

The present disclosure relates to a video encoding/decoding apparatus and method, in which skip information indicating whether a block is a skip block is encoded, partition information of the block and skip motion information of the block are encoded or prediction information of the block containing the partition information of the block and intra prediction mode information or motion information are encoded according to the skip information, residual signal information of the block is predictive-encoded based on the prediction information and the transform information, and an encoded signal is reconstructed. The method and the apparatus can improve the video compression efficiency by efficiently encoding the encoding information used for the video encoding and selectively using various encoding methods and decoding methods in encoding the video.

主权项

1. A video decoding apparatus comprising:
an encoding information decoder configured to
reconstruct a skip information indicating whether a block to be decoded in an image is a skip block by decoding a bitstream, andreconstruct either a skip motion information of the block, or an intra or inter prediction information of the block and a transform information of the block by decoding the bitstream, according to the skip information; and a video decoder configured to either reconstruct the block based on the skip motion information or reconstruct the block based on both the prediction information and a residual signal information reconstructed by decoding the bitstream based on the transform information, wherein the encoding information decoder is configured to reconstruct the transform information which includes partition information related to partitioning the block into subblocks by using a tree structure, wherein the partition information is reconstructed by
reconstructing a side information containing an information on a maximum number of layers and an information on a minimum subblock size by decoding the bitstream,reconstructing a flag indicating whether a node for each layer from a highest layer toward the lowest layer is partitioned by decoding the bitstream based on the side information, andidentifying a node which is not further partitioned, and wherein the video decoder reconstructs the residual signal information of a subblock corresponding to the node which is not further partitioned.