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Coding method and decoding method for video codec

A codec and coding method technology, which is applied in the fields of digital video signal modification, image communication, electrical components, etc., can solve the problems of insufficient use of image information and low coding performance, and achieve the effect of improving coding and decoding performance.

Active Publication Date: 2017-03-22
PEKING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Considering the quantization loss in the encoding process, the pixel values ​​contained in the reference frame are not necessarily the most reference value; at the same time, the selection of the reference frame does not make full use of the large amount of previously encoded image information
Therefore, the prediction of some areas of the current image to be encoded is not accurate, resulting in poor encoding performance

Method used

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  • Coding method and decoding method for video codec
  • Coding method and decoding method for video codec
  • Coding method and decoding method for video codec

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Embodiment Construction

[0055] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0056] In order to facilitate the understanding of the embodiments of the present invention, several specific embodiments will be taken as examples for further explanation below in conjunction with the accompanying drawings, and each embodiment does not constitute a limitation to the embodiments of the present invention.

[0057] like figure 1 Shown, be the encoding method of a kind of video codec described in the present invention, comprise:

[0058] Step 11, obtaining the current image to be encoded and the construction reference fram...

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Abstract

The invention provides a coding method and a decoding method for a video codec. The coding method comprises steps that a present to-be-coded image and a construction reference frame corresponding to a previous coded image of the present to-be-coded image are acquired; the construction reference frame corresponding to the previous coded image is updated according to the coded image, the construction reference frame corresponding to the previous coded image after update is taken as a construction reference frame corresponding to the present to-be-coded image; the construction reference frame corresponding to the present to-be-coded image is taken as a reference image, and the present to-be-coded image is coded. The coding method is advantaged in that coding and decoding performance can be improved.

Description

technical field [0001] The invention relates to the technical field of video coding and decoding in the digital media processing technology, in particular to a coding method and a decoding method of a video codec. Background technique [0002] Existing video coding methods usually use coded images as reference frames. Considering the quantization loss in the encoding process, the pixel values ​​contained in the reference frame are not necessarily the most valuable; at the same time, the selection of the reference frame does not make full use of the large amount of previously encoded image information. Therefore, the prediction of some areas of the current image to be encoded is not accurate, resulting in low encoding performance. Contents of the invention [0003] Embodiments of the present invention provide an encoding method and a decoding method of a video codec, which can improve encoding and decoding performance. [0004] A coding method for a video codec, comprisin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N19/573H04N19/57H04N19/13
CPCH04N19/13H04N19/57H04N19/573
Inventor 田永鸿董思维王耀威黄铁军
Owner PEKING UNIV