GOP layer coding method based on Wyner-Ziv video coding system

A coding method and video coding technology, applied in the field of GOP layer coding in video communication system and non-feedback coding rate control, can solve the problems of blindness in code rate distribution, lack of consideration, and failure to achieve the overall optimal decoding quality, and achieve rate distortion Optimum performance and avoid blindness effect
CN102123282BInactive Publication Date: 2013-02-27XIDIAN UNIV
0 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
XIDIAN UNIV
Publication Date
2013-02-27
Estimated Expiration
Not applicable · inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention discloses a group-of-picture (GOP) layer coding method of a coding end in a Wyner-Ziv video coding system based on rate distortion optimization, and mainly solves the problems that the conventional code rate allocation technology cannot flexibly distribute a code rate allocation proportion of the GOP layer and cannot be applied to a practical system. The coding process comprises the following steps of: estimating the relationship of a code rate allocation proportion factor k and a distortion D at the coding end; estimating the optimal proportion factor k* which meets the optimal overall performance of a distributed video coding (DVC) system by utilizing a key frame reconfigured by the coding end and estimated side information; allocating a key frame code rate Rk and a WZ frame code rate Rwz by using the optimal proportion factor k* in the GOP; and coding the current GOP by using the key frame code rate Rk and the WZ frame code rate Rwz. By the GOP layer coding method, the optimal proportion of code rate allocation in the GOP which meets the specific distortion requirement can be flexibly determined, so that the blindness of rate allocation is avoided; distortion prediction and the code rate allocation can be performed at the coding end; and the GOP layer coding method can be applied to the practical DVC system.
Need to check novelty before this filing date? Find Prior Art

Description

Technical field

[0001] The present invention belongs to the technical field of video coding, and mainly relates to a GOP (Group-of-Picture, Group-of-Picture) layer coding method in a rate-distortion optimization-based non-feedback coding rate control in distributed video coding, and can be used in a practical distributed video coding system and Video communication system with limited terminal coding equipment resources. Background technique

[0002] With the rapid development of information technology and the Internet, multimedia has become the most important carrier for people to obtain information, and multimedia services will be key services for future wireless broadband networks. According to statistics, 80% of data traffic on broadband networks in the future will be multimedia data traffic based on video. In order to adapt to the increasing development of wireless networks, more and more mobile video terminals are used in multimedia communications, such as wireless video de...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More