Video coding/decoding method adopting variable size block skipping mode and device

Abstract

The invention provides a video coding / decoding method adopting a variable size block skipping mode and a device, and the method comprises the following steps: segmenting each macro block into small blocks with different sizes based on a binary tree structure, and applying the skipping mode in the blocks with different sizes; determining each small block of the macro block to be a skipping block or a non-skipping block for each segmentation mode at a coding end, so as to select the coding mode of the block between the skipping mode and other coding modes; coding information about segmentation modes and information that which blocks are coded under the skipping mode; and performing corresponding coding / decoding on the information of the blocks by a coder / decoder based on the fact whether the blocks are skipping blocks or no-skipping blocks. By the method and device in the invention, the efficiency and flexibility of coding / decoding can be improved.

Description

technical field [0001] The present invention relates to a video compression method and device, in particular to a video encoding / decoding method and device using a variable block size skip mode. Background technique [0002] The encoding process of the video encoder enables video compression / video encoding. A video encoder converts raw video data into a standardized bit stream. The compressed bitstream can be stored on a storage medium, or transmitted over a transmission medium to a video decoder for reconstruction of a motion picture sequence. Due to data loss during conversion, the reconstructed video data is of reduced quality compared to the original video data. [0003] The most common video coding standard is MPEG- * and H.26 * . In these standards, video frames are classified into inter frames and intra frames, and each video frame is divided into non-overlapping macroblocks of pixels. A macroblock is a basic coding unit of video coding, and can be independently...

AI Technical Summary

Problems solved by technology

[0005] As mentioned above, the skip mode in the H.264 standard encodes the macroblock with the same fixed block size as the macroblock size, however, for higher prediction accuracy and coding efficiency, the variable block size feature is Widely used in recent video coding standards, therefore, there are deficiencies in applying existing skip modes only to fixed block sizes, while better performance may be obtained by applying skip modes to blocks with different block sizes

On the other hand, although the variable block size structure supported by the H.264 standard supports 7 block sizes for inter prediction, the partition may not be flexible enough, and some block sizes cannot exist in the same macroblock at the same time

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