By Topic

An improved macroblock level rate control algorithm for MPEG-4 video object coding

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

2 Author(s)
Qing Wu ; Dept. of Electr. & Electron. Eng., Hong Kong Univ., China ; Shing-Chow Chan

This paper presents an improved macroblock (MB) level rate control algorithm for MPEG-4 object coding. Motivated by the statistical analysis of the coding of MBs and VOPs for typical sequences, a refined quadratic rate-distortion model is proposed in the new MB rate control algorithm. The basic idea is to exploit the statistical coding property of a group of MBs coded by an identical QP rather than an individual MB to do the modeling, thereby producing more stable quantization parameter to improve the estimation and coding performances. In addition, some improved measures which explore the new model for coding the MBs in a VOP are incorporated. Simulation results show that the proposed algorithm can achieve the much smoother bit rate and better picture quality in terms of PSNR than the MPEG-4 VM18 algorithm for the tested sequences.

Published in:

Intelligent Signal Processing and Communication Systems, 2005. ISPACS 2005. Proceedings of 2005 International Symposium on

Date of Conference:

13-16 Dec. 2005