DocumentCode :
3495649
Title :
Transform-based medical image compression using a recursive preprocessing approach
Author :
Paik, Chul ; Fox, Martin
Author_Institution :
Connecticut Univ., Storrs, CT, USA
fYear :
1990
fDate :
26-27 Mar 1990
Firstpage :
67
Lastpage :
68
Abstract :
A recursive preprocessing approach to transform-based medical image compression is presented. This preprocessing approach, combined with the cas-cas transform, shows good performance when applied to medical magnetic resonance images (MRIs). Overall, recursive preprocessing significantly improved all transform-based compression schemes tested, with more improvement noted in the fast cas-cas transform (FCCT) than in the fast cosine transform (FCT). By performing a recursive preprocessing step in the space domain before transforming, edge discontinuities are reduced so that energy packing efficiency can be higher. By using the FCCT, a speed advantage is obtained as compared to the commonly used FCT. The preliminary results show that the compression algorithm using the cas-cas transform affords both a higher compression ratio and speedier computation than the conventional cosine transform
Keywords :
biomedical NMR; computerised picture processing; data compression; medical diagnostic computing; transforms; compression algorithm; edge discontinuities; energy packing efficiency; fast cas-cas transform; fast cosine transform; medical magnetic resonance images; recursive preprocessing approach; space domain; transform-based medical image compression; Biomedical engineering; Biomedical imaging; Compression algorithms; Computer science; Discrete transforms; Fourier transforms; Image coding; Power engineering and energy; Radiology; Systems engineering and theory;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Bioengineering Conference, 1990., Proceedings of the 1990 Sixteenth Annual Northeast
Conference_Location :
State College, PA
Type :
conf
DOI :
10.1109/NEBC.1990.66292
Filename :
66292
Link To Document :
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