Special Section on Image/Video Quality and System Performance

High-quality symmetric Wyner–Ziv coding scheme for low-motion videos

[+] Author Affiliations
Xianfeng Ou

Sichuan University, College of Electronics and Information Engineering, No. 24 South Section 1, Yihuan Road, Chengdu, 610064 China

Enrico Masala

Politecnico di Torino, Control and Computer Engineering Department, corso Duca degli Abruzzi 24, Torino, 10129 Italy

Linbo Qing

Sichuan University, College of Electronics and Information Engineering, No. 24 South Section 1, Yihuan Road, Chengdu, 610064 China

Xiaohai He

Sichuan University, College of Electronics and Information Engineering, No. 24 South Section 1, Yihuan Road, Chengdu, 610064 China

J. Electron. Imaging. 23(6), 061112 (Sep 15, 2014). doi:10.1117/1.JEI.23.6.061112
History: Received March 27, 2014; Revised August 19, 2014; Accepted August 28, 2014
Text Size: A A A

Abstract.  Traditional Wyner–Ziv video coding (WZVC) structures require either intra (Key) or Wyner–Ziv (WZ) coding of frames. Unfortunately, keeping the video quality approximately constant implies drastic bit-rate fluctuations because consecutive frames of different types (Key or WZ) present significantly different compression performances. Moreover, certain scenarios severely limit rate fluctuation. This work proposes a WZVC scheme with low bit-rate fluctuations based on a symmetric coding structure. First, this work investigates the performance of a generic nonasymmetric distributed source coding structure, showing that the low-density parity-check accumulate channel decoding method is best suited. This is used as a basis to design a symmetric WZVC scheme in which every input video frame is divided into four parallel subframes through subsampling, and then the subframes are encoded by using a symmetric method. Compared with the traditional asymmetric WZVC scheme, the proposed scheme can achieve higher bit-rate stability over time, which is a great advantage to guarantee a reliable transmission in many wireless communication application environments in which bit-rate fluctuations are strongly constrained. Simulation results show the effectiveness of the proposed symmetric WZVC scheme in maintaining a steady bit rate and quality, as well as a quality comparison with the traditional WZVC scheme.

© 2014 SPIE and IS&T

Citation

Xianfeng Ou ; Enrico Masala ; Linbo Qing and Xiaohai He
"High-quality symmetric Wyner–Ziv coding scheme for low-motion videos", J. Electron. Imaging. 23(6), 061112 (Sep 15, 2014). ; http://dx.doi.org/10.1117/1.JEI.23.6.061112


Tables

Access This Article
Sign in or Create a personal account to Buy this article ($20 for members, $25 for non-members).

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging & repositioning the boxes below.

Related Book Chapters

Topic Collections

PubMed Articles
Advertisement
  • Don't have an account?
  • Subscribe to the SPIE Digital Library
  • Create a FREE account to sign up for Digital Library content alerts and gain access to institutional subscriptions remotely.
Access This Article
Sign in or Create a personal account to Buy this article ($20 for members, $25 for non-members).
Access This Proceeding
Sign in or Create a personal account to Buy this article ($15 for members, $18 for non-members).
Access This Chapter

Access to SPIE eBooks is limited to subscribing institutions and is not available as part of a personal subscription. Print or electronic versions of individual SPIE books may be purchased via SPIE.org.