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Lossless predictive compression of medical images

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Author(s): Avramović Aleksej | Savić Slavica

Journal: Serbian Journal of Electrical Engineering
ISSN 1451-4869

Volume: 8;
Issue: 1;
Start page: 27;
Date: 2011;
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Keywords: medical imaging | digital image processing | lossless image compression | prediction

ABSTRACT
Among the many categories of images that require lossless compression, medical images can be indicated as one of the most important category. Medical image compression with loss impairs of diagnostic value, therefore, there are often legal restrictions on the image compression with losses. Among the common approaches to medical image compression we can distinguish the transformation-based and prediction-based approaches. This paper presents algorithms for the prediction based on the edge detection and estimation of local gradient. Also, a novel prediction algorithm based on advantages of standardized median predictor and gradient predictor is presented and analyzed. Removed redundancy estimation was done by comparing entropies of the medical image after prediction.
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