Encoding-decoding processing method and encoding-decoding processing device in image segmentation mode

Abstract

The invention embodiment provides an encoding-decoding processing method and an encoding-decoding processing device in an image segmentation mode. The encoding processing method in the image segmentation mode comprises the following steps: acquiring size of a to-be-encoded image block and an adopted segmentation mode serial number value in a depth modeling mode DMM1 encoding process; acquiring an initial Value corresponding to the size of the image block and computing to obtain an absolute value of a differential value between the initial Value and the segmentation mode serial number value, wherein Value is equal to k-2a-x, x is bit digit required for saving, k is numbers of all segmentation modes corresponding to the size of the image block, a is bit digit for representing all segmentation modes; encoding the absolute value by adopting a-x bits to obtain the encoding information of the segmentation model of the image block.

Description

technical field [0001] Embodiments of the present invention relate to image processing technologies, and in particular, to an encoding and decoding processing method and device in an image segmentation mode. Background technique [0002] In stereoscopic (3D) video encoding and decoding, in order to reflect the depth information of objects, it is necessary to encode and decode the depth map. Since the depth map has clear edges (object edges) and approximate depth values ​​of regional blocks, compared with the traditional texture map encoding and decoding, the image block segmentation method of depth modeling modes (hereinafter referred to as: DMM) is added, where DMM1 is The image block is segmented and coded in a wedge manner. In specific segmentation, different image block sizes may have different segmentation methods, for example, for a 4×4 image block, it is assumed that there are 87 segmentation methods. When encoding a depth image block, it is necessary to indicate wh...

AI Technical Summary

Problems solved by technology

For example, for 87 possible division methods of a 4×4 image block, the encoder will use 7 bits (2 7 =128>87) to represent the segmentation method adopted by the encoding end, but in fact, 41 of the 128 cases represented by these 7 bits are redundant, and the encoding efficiency is not high.

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