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Performance analysis of DWT-SPIHT Algorithm for Medical Image Compression with Uniform Aspect Ratio

by T. Vijayakumar, S. Ramachandran
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International Journal of Computer Applications
Foundation of Computer Science (FCS), NY, USA
Volume 67 - Number 13
Year of Publication: 2013
Authors: T. Vijayakumar, S. Ramachandran
10.5120/11459-7066

T. Vijayakumar, S. Ramachandran . Performance analysis of DWT-SPIHT Algorithm for Medical Image Compression with Uniform Aspect Ratio. International Journal of Computer Applications. 67, 13 ( April 2013), 33-43. DOI=10.5120/11459-7066

@article{ 10.5120/11459-7066,
author = { T. Vijayakumar, S. Ramachandran },
title = { Performance analysis of DWT-SPIHT Algorithm for Medical Image Compression with Uniform Aspect Ratio },
journal = { International Journal of Computer Applications },
issue_date = { April 2013 },
volume = { 67 },
number = { 13 },
month = { April },
year = { 2013 },
issn = { 0975-8887 },
pages = { 33-43 },
numpages = {9},
url = { https://ijcaonline.org/archives/volume67/number13/11459-7066/ },
doi = { 10.5120/11459-7066 },
publisher = {Foundation of Computer Science (FCS), NY, USA},
address = {New York, USA}
}
%0 Journal Article
%1 2024-02-06T21:24:46.699835+05:30
%A T. Vijayakumar
%A S. Ramachandran
%T Performance analysis of DWT-SPIHT Algorithm for Medical Image Compression with Uniform Aspect Ratio
%J International Journal of Computer Applications
%@ 0975-8887
%V 67
%N 13
%P 33-43
%D 2013
%I Foundation of Computer Science (FCS), NY, USA
Abstract

This paper analyses wavelet filters and SPIHT encoding techniques in compression and decompression of medical images. Medical images acquired have uneven aspect ratio, region of interest decides the aspect ratio, and compression algorithm performance varies based on aspect ratio. This paper tries to offer a novel algorithm that preprocesses the input image with uniform aspect ratio prior to compression. Various DWT filters have been experimented with, to select the right type of filters for compressing and decompressing the images without sacrificing on the quality. Filter selection and its impact on compression ratio are also analyzed. Biorthogonal (Bior) and Daubechies (DB) achieve PSNR in the range of 45dB to 52dB for lossless compression. The modified algorithm proposed, normalizes the aspect ratio prior to compression using Discrete Wavelet Transform and SPIHT. The compressed bit stream is grouped into 128 bits and for each 128 bits hamming code is generated for error correction and detection. Various medical images have been used to validate the proposed compression algorithm and the developed algorithm is suitable for telemedicine applications.

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Index Terms

Computer Science
Information Sciences

Keywords

Image compression medical image DWT SPIHT Wavelet filters

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