Proceedings ArticleDOI
Selective estimation of least squares based predictor and efficient overhead management algorithm for lossless compression of digital mammograms
Vinit Jakhetiya,Nitish Kumar Boyal,Anil Kumar Tiwari +2 more
- pp 144-147
TLDR
This paper proposes selective estimation of least square based predictor algorithm and efficient overhead management scheme for lossless compression of digital mammograms that gives better entropy and minimum overhead burden then most of the algorithms reported in literature.Abstract:
In this paper, we propose selective estimation of least square based predictor algorithm and efficient overhead management scheme for lossless compression of digital mammograms. We exploit the characteristics of mammograms that most of the mammograms contain large number of blocks with constant gray level pixels, so a block based selective least square estimation algorithm is proposed. In our proposed algorithm if all the pixels have same intensity value in any block, then we represents those blocks by a single (‘1‘) bit otherwise the block is decorrelated using the feed forward type of autoregressive modeling. We exploit the relationship between autoregression parameters which saves around 25% overhead burden. We have also empirically found that the AR parameters of the neighboring blocks are highly correlated and to get the best decorrelation among these parameters, median edge detector (MED) is used which gives us around 40% more saving in overhead burden. So, our proposed lossless compression algorithm for digital mammograms gives better entropy and minimum overhead burden then most of the algorithms reported in literature.read more
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Zeshang Yang,Maria Kallergi,Ronald A. DeVore,Bradley J. Lucier,Wei Qian,Robert A. Clark,Laurence P. Clarke +6 more
TL;DR: Develop a variety of wavelet methods, including standard, hyperbolic, and adaptive wavelet bases, for the compression of high-resolution digital mammograms and determine the dependence of the information loss on the compression ratio.
Proceedings ArticleDOI
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April Khademi,Sridhar Krishnan +1 more
TL;DR: This work is the first real-time implementation of JPEG 2000 on a mammogram image database and results indicate JPEG 2000 and JPEG-LS provide comparable compression performance since their compression ratios differed by 0.72% and both compressors also superseded the results of the other coders.
Proceedings ArticleDOI
A novel way of lossless compression of digital mammograms using grammar codes
TL;DR: Tested the grammar-based coding technique on digital mammograms obtained from the Mammographic Image Analysis Society (MIAS), the result shows the newly developed grammar code performs better than the traditional lossless coding schemes.
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