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Method for coding and decoding video image, coding equipment and decoding equipment

A video image and coding technology, applied in image communication, digital video signal modification, electrical components, etc., can solve problems such as restricting coding efficiency

Active Publication Date: 2015-05-27
HUAWEI TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in the prior art, a six-parameter affine motion parameter model needs to be used, that is, additional bits need to be used in each block to encode six affine motion model parameters, which restricts the further improvement of coding efficiency

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  • Method for coding and decoding video image, coding equipment and decoding equipment
  • Method for coding and decoding video image, coding equipment and decoding equipment
  • Method for coding and decoding video image, coding equipment and decoding equipment

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Embodiment Construction

[0097] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, 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 shall fall within the protection scope of the present invention.

[0098] figure 1 is a schematic flowchart of a method for encoding video images according to an embodiment of the present invention. figure 1 The illustrated method may be performed by an encoding device, such as an encoder. Specifically, such as figure 1 As shown, method 100 includes:

[0099] S110. Determine a motion vector group of the current coding block, where the motion vector group includes at least one motion vector of the current coding block; ...

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Abstract

An embodiment of the invention relates to a method for coding and decoding a video image, coding equipment and decoding equipment. The method comprises steps as follows: determining a motion vector group of a current coding block; determining a prediction value of a first component set of a motion model initial vector of the current coding block according to the motion vector group; determining a to-be-transmitted value of the first component set according to the prediction value of the first component set; coding the to-be-transmitted value of the first component set and sending the coded to-be-transmitted value to a decoding end. According to the method for coding and decoding the video image, the coding equipment and the decoding equipment, the motion model initial vector of the current coding block is determined according to the motion vector group, the to-be-transmitted value of a motion model is determined according to the motion model initial vector and is coded and transmitted, so that the decoding end can decode according to the to-be-transmitted value of the motion model, and the volume of data transmitted during coding and decoding and occupied bit number can be reduced.

Description

technical field [0001] The present invention relates to the field of video image processing, in particular to a video image encoding and decoding method, encoding device and decoding device. Background technique [0002] In various video codecs, motion estimation / motion compensation is a key technology that affects the coding performance. In the various existing video codecs, it is assumed that the motion of the object always satisfies the translational motion, and all parts of the whole object have the same motion, and the block-based motion compensation technology is adopted. However, these methods are all based on the Translational Motion Model, and are various improvements based on the method of block motion compensation. There are many kinds of motion in the real world, and irregular motions such as affine, scaling, rotation, and shearing motions are ubiquitous. The existence of these motions will cause the motion prediction effect based on block motion compensation to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N19/513H04N19/124
CPCH04N19/124H04N19/157H04N19/176H04N19/196H04N19/513H04N19/44H04N19/52H04N19/56
Inventor 林四新陈焕浜
Owner HUAWEI TECH CO LTD
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