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Evaluation of Quality of Images Subjected to Compression Algorithms

Published on July 2012 by Rashmi S Nair, Rejimol Robinson R R
Advanced Computing and Communication Technologies for HPC Applications
Foundation of Computer Science USA
ACCTHPCA - Number 4
July 2012
Authors: Rashmi S Nair, Rejimol Robinson R R
a0342172-c8d4-406e-b4fa-a3d16718bbdd

Rashmi S Nair, Rejimol Robinson R R . Evaluation of Quality of Images Subjected to Compression Algorithms. Advanced Computing and Communication Technologies for HPC Applications. ACCTHPCA, 4 (July 2012), 6-11.

@article{
author = { Rashmi S Nair, Rejimol Robinson R R },
title = { Evaluation of Quality of Images Subjected to Compression Algorithms },
journal = { Advanced Computing and Communication Technologies for HPC Applications },
issue_date = { July 2012 },
volume = { ACCTHPCA },
number = { 4 },
month = { July },
year = { 2012 },
issn = 0975-8887,
pages = { 6-11 },
numpages = 6,
url = { /specialissues/accthpca/number4/7572-1026/ },
publisher = {Foundation of Computer Science (FCS), NY, USA},
address = {New York, USA}
}
%0 Special Issue Article
%1 Advanced Computing and Communication Technologies for HPC Applications
%A Rashmi S Nair
%A Rejimol Robinson R R
%T Evaluation of Quality of Images Subjected to Compression Algorithms
%J Advanced Computing and Communication Technologies for HPC Applications
%@ 0975-8887
%V ACCTHPCA
%N 4
%P 6-11
%D 2012
%I International Journal of Computer Applications
Abstract

Compression is performed to reduce the redundancy and retain information pertaining to data. In this paper, five image compression techniques have been simulated. The techniques are baseline Joint Photographic Experts Group(JPEG) , Block Truncation Coding (BTC) ,Hybrid Discrete Wavelet Transform- Discrete Cosine Transform (DWT-DCT) method, Pyramid and Set Partitioning In Hierarchical Trees (SPIHT) methods. The aim of this paper is to find the best compression algorithm which satisfies our requirements. The results of simulation are shown and compared for different quality parameters of it by applying on 512x512 sized color images of Lena , Baboon and Goldhill and satellite images of earth. CPU time utilization, entropy, Peak Signal To Noise Ratio (PSNR),bits per pixel are some of the factors considered to distinguish between the different methodologies. The results show that the best method for compression which yields a better outcome for standard images is hybrid dwt-dct method whereas for satellite images the best method is SPIHT. Considering CPU computation time , the fastest method of compression is Pyramid method. On the basis of requirement one of the above mentioned algorithms can be used.

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Index Terms

Computer Science
Information Sciences

Keywords

Btc bits Per Pixeldwt dct entropy image Compression Jpeg pyramid psnr spiht