Computational and Mathematical Methods in Medicine
Volume 2012 (2012), Article ID 935914, 7 pages
Research Article

An Adaptive Coding Pass Scanning Algorithm for Optimal Rate Control in Biomedical Images

1Department of Computer Science and Information Engineering, National United University, Miaoli City 36003, Taiwan
2Department of Electronics Engineering, Chung Hua University, Hsinchu City 30012, Taiwan

Received 13 June 2011; Accepted 15 August 2011

Academic Editor: Shengyong Chen

Copyright © 2012 Hsi-Chin Hsin et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


High-efficiency, high-quality biomedical image compression is desirable especially for the telemedicine applications. This paper presents an adaptive coding pass scanning (ACPS) algorithm for optimal rate control. It can identify the significant portions of an image and discard insignificant ones as early as possible. As a result, waste of computational power and memory space can be avoided. We replace the benchmark algorithm known as postcompression rate distortion (PCRD) by ACPS. Experimental results show that ACPS is preferable to PCRD in terms of the rate distortion curve and computation time.