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Coding and decoding method and device

A technology of a decoding method and an encoding method, which is applied in the field of division of multi-encoded image blocks, can solve problems such as large bit volume and large data correlation, and achieve the effect of reducing redundancy and reducing codewords

Active Publication Date: 2018-01-09
HUAWEI TECH CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The reason for transform coding is: video image data often has a large data correlation in the spatial domain, resulting in the existence of a large amount of redundant information, and direct coding requires a large amount of bits

Method used

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  • Coding and decoding method and device
  • Coding and decoding method and device
  • Coding and decoding method and device

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Embodiment Construction

[0111] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0112] figure 1 is a schematic block diagram of a video codec apparatus or electronic device 50 that may incorporate a codec according to an embodiment of the present invention. figure 2 is a schematic device diagram for video encoding according to an embodiment of the present invention. will be explained below figure 1 with figure 2 unit in .

[0113] The electronic device 50 may be, for example, a mobile terminal or user equipment of a wir...

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Abstract

The invention discloses a decoding method, and the method comprises the steps: analyzing a code stream; processing a first sub-image block with the size of 2N*N and a second sub-image block with the size of 2N*N or a first sub-image block with the size of N*2N and a second sub-image block with the size of N*2N in a mode of constraint sub-image processing when an image block with the size of 2N*2Ncan be divided in a quadtree mode, so as to enable an image block dividing mode obtained through the second sub-image block and the first sub-image block after dividing to be different from an image block dividing mode obtained after the 2N*2N image block is divided in the quadtree mode, wherein the first sub-image block with the size of 2N*N and the second sub-image block with the size of 2N*N orthe first sub-image block with the size of N*2N and the second sub-image block with the size of N*2N are obtained through the dividing of the 2N*2N image block.

Description

technical field [0001] The invention relates to the field of video codec and compression, in particular to the division technology of multi-coded image blocks in the process of codec. Background technique [0002] Digital video capabilities can be incorporated into a wide range of devices, including digital television, digital broadcast systems, wireless broadcast systems, personal digital assistants (PDAs), laptop or desktop computers, tablet computers, e-book readers, digital Cameras, digital recording devices, digital media players, video game devices, video game consoles, cellular or satellite radiotelephones, video conferencing devices, video streaming devices, and more. Digital video devices implement video compression techniques such as MPEG-2, MPEG-4, ITU-TH.263, ITU-TH.264 / MPEG-4 Part 10 Advanced Video Codec (AVC), ITU-TH.265 High The Efficiency Video Codec (HEVC) standard defines the standard and those video compression techniques described in extensions to the st...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N19/96H04N19/115H04N19/176
CPCH04N19/176H04N19/119H04N19/96H04N19/157H04N19/167H04N19/122H04N19/80
Inventor 王钊马思伟高山杨海涛
Owner HUAWEI TECH CO LTD
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