Journal of Beijing University of Posts and Telecommunications

  • EI核心期刊

JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM ›› 2007, Vol. 30 ›› Issue (3): 79-82.doi: 10.13190/jbupt.200703.79.136

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rate-distortion optimized rate control in 3D subband video coding

LIAO Ning1, QUAN Zi-yi1, MEN Ai-dong1   

  1. 1. School of Telecommunication Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, China
  • Received:2006-08-29 Revised:2006-12-04 Online:2007-06-30 Published:2007-06-30
  • Contact: LIAO Ning

Abstract:

In Motion-Compensated Temporal Filtering (MCTF) based 3D wavelet/subband scalable video coding, quality scalability or rate scalability is implemented by extracting corresponding sub-streams from a full-resolution embedded code stream. This paper first expounds the theoretic fundamentals for the commonly used bitplan truncation algorithm and points out its sub-optimality. An optimal subband rate allocation algorithm in mean-squared error (MSE) minimization sense is proposed, achieving persistent optimal rate-distortion per-formance under any given rate constrains. Comparative experiment results also show that the choice of bit alloca-tion strategies has serious influence on the performance of the 3D subband video coding.

Key words: MCTF, 3D Subband/wavelet video coding, rate control, rate allocation, quality scalable, rate-distortion optimization

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