Fast and accurate rate prediction and picture quality control for wavelet image coding

Zhiai He, Tian-Hu Yu, and Sanjit K. Mitra
Department of Electrical and Computer Engineering
University of California, Santa Barbara, CA 93106,
{zhihai, mitra} [at]


By introducing the concepts of characteristic rate curves and rate curve decomposition, a novel framework for rate-distortion (R-D) analysis and source modeling is developed in this work. With this framework, a fast algorithm is then proposed to accurately estimate the R- D curve of wavelet-based image coders. The proposed algorithm is applied to the SPIHT (Set Partitioning In Hierarchical Trees)1 and Stact-Run (SR) encoders2. Our extensive experimental results show that the relative R-D curve estimation error is less than 5%.
[PDF] [BibTex]
Zhihai He, Tian-Hu Yu, and S. K. Mitra,
34th Asilomar Conference on Signals, Systems, and Computers, Oct. 2000.
Node ID: 306 , DB ID: 103 , Lab: IPL , Target: Proceedings
Subject: [IPL] « Look up more