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Authors: Madhur Srivastava 1 and Prasanta K. Panigrahi 2

Affiliations: 1 Cornell University, United States ; 2 Indian Institute of Science Education and Research, India

Keyword(s): JPEG-2000 Standard, Discrete Wavelet Transform, Thresholding, Non-uniform Quantization, Image Compression.

Abstract: The paper introduces the idea of non-uniform quantization in the detail components of wavelet transformed image. It argues that most of the coefficients of horizontal, vertical and diagonal components lie near to zeros and the coefficients representing large differences are few at the extreme ends of histogram. Therefore, this paper advocates need for variable step size quantization scheme which preserves the edge information at the edge of histogram and removes redundancy with the minimal number of quantized values. To support the idea, preliminary results are provided using a non-uniform quantization algorithm. We believe that successful implementation of non-uniform quantization in detail components in JPEG-2000 still image standard will improve image quality and compression efficiency with lesser number of quantized values.

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Paper citation in several formats:
Srivastava, M. and K. Panigrahi, P. (2013). Non-uniform Quantization of Detail Components in Wavelet Transformed Image for Lossy JPEG2000 Compression. In Proceedings of the 2nd International Conference on Pattern Recognition Applications and Methods - ICPRAM; ISBN 978-989-8565-41-9; ISSN 2184-4313, SciTePress, pages 604-607. DOI: 10.5220/0004333706040607

@conference{icpram13,
author={Madhur Srivastava. and Prasanta {K. Panigrahi}.},
title={Non-uniform Quantization of Detail Components in Wavelet Transformed Image for Lossy JPEG2000 Compression},
booktitle={Proceedings of the 2nd International Conference on Pattern Recognition Applications and Methods - ICPRAM},
year={2013},
pages={604-607},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0004333706040607},
isbn={978-989-8565-41-9},
issn={2184-4313},
}

TY - CONF

JO - Proceedings of the 2nd International Conference on Pattern Recognition Applications and Methods - ICPRAM
TI - Non-uniform Quantization of Detail Components in Wavelet Transformed Image for Lossy JPEG2000 Compression
SN - 978-989-8565-41-9
IS - 2184-4313
AU - Srivastava, M.
AU - K. Panigrahi, P.
PY - 2013
SP - 604
EP - 607
DO - 10.5220/0004333706040607
PB - SciTePress

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