Design and analysis of medical images pyramid coding

Yih Chuan Lin, Shen Chuan Tai

研究成果: Conference contribution

摘要

In this paper, a new efficient technique for medical image compression is presented. It allows the ability of interactive picture transmission over low bandwidth channels, and achieves high compression ratio as well as good image fidelity. Within this paper, a method, which considers the intra-correlation properties, to design an optimal pyramids generation/synthesizing subsystem is first presented. By this, a pyramid structure which decomposes the input image waveforms into four pyramids is presented. In order to retain the important information for human eyes, we adopt different quantizer as well as coding algorithm for every pyramid according to human visual perceptual properties. Since the lower pyramids of most images are sparse and locally concentrated, i.e., many areas of the lower pyramids are inactive, a vector quantization accompanied with quadtree representation is used. As for the higher pyramids, signals are coded by simple variable length codewords algorithm. Since human eyes are more sensitive to low frequency changes, we apply finer quantizer to encode these pyramids. To generate the pyramids structure, a 2-D Quadrature Mirror Filter (2-D QMF) is used. Simulation results show that a reproduction of medical image with qualities be judged as faithful to the original image, can be obtained with SNR = 34.16 (dB) and bit rate 0.479 bpp.

原文English
主出版物標題Proceedings of SPIE - The International Society for Optical Engineering
發行者Publ by Int Soc for Optical Engineering
頁面1282-1293
頁數12
版本pt 3
ISBN(列印)0819410187
出版狀態Published - 1992 十二月 1
事件Visual Communications and Image Processing '92 - Boston, MA, USA
持續時間: 1992 十一月 181992 十一月 20

出版系列

名字Proceedings of SPIE - The International Society for Optical Engineering
號碼pt 3
1818
ISSN(列印)0277-786X

Other

OtherVisual Communications and Image Processing '92
城市Boston, MA, USA
期間92-11-1892-11-20

All Science Journal Classification (ASJC) codes

  • 電子、光磁材料
  • 凝聚態物理學
  • 電腦科學應用
  • 應用數學
  • 電氣與電子工程

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