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Efficient Image Compression Technique using JPEG2000 with Adaptive Threshold
Md. Masudur Rahman, Mohammad Motiur Rahman
Pages - 166 - 174     |    Revised - 31-05-2015     |    Published - 30-06-2015
Volume - 9   Issue - 3    |    Publication Date - May / June 2015  Table of Contents
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KEYWORDS
Image, JPEG2000, DWT, Adaptive Threshold, EBCOT.
ABSTRACT
Image compression is a technique to reduce the size of image which is helpful for transforms. Due to the limited communication bandwidth we have to need optimum compressed image with good visual quality. Although the JPEG2000 compression technique is ideal for image processing as it uses DWT (Discrete Wavelet Transform).But in this paper we proposed fast and efficient image compression scheme using JPEG2000 technique with adaptive subband threshold. Actually we used subband adaptive threshold in decomposition section which gives us more compression ratio and good visual quality other than existing compression techniques. The subband adaptive threshold that concentrates on denoising each subband (except lowest coefficient subbands) by minimizing insignificant coefficients and adapt with modified coefficients which are significant and more responsible for image reconstruction. Finally we use embedded block coding with optimized truncation (EBCOT) entropy coder that gives three different passes which gives more compressed image. This proposed method is compared to other existing approach and give superior result that satisfy the human visual quality and also these resulting compressed images are evaluated by the performance parameter PSNR.
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Mr. Md. Masudur Rahman
Mawlana Bhashani Science and Technology University - Bangladesh
masudur_2006@yahoo.com
Mr. Mohammad Motiur Rahman
Mawlana Bhashani Science and Technology University Santosh, Tangail-1902 (Bangladesh) - Bangladesh