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Image coding based on a morphological representation of wavelet data

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3 Author(s)
Servetto, S.D. ; Dept. of Comput. Sci., Illinois Univ., Urbana, IL, USA ; Ramchandran, K. ; Orchard, M.T.

An experimental study of the statistical properties of wavelet coefficients of image data is presented, as well as the design of two different morphology-based image coding algorithms that make use of these statistics. A salient feature of the proposed methods is that, by a simple change of quantizers, the same basic algorithm yields high performance embedded or fixed rate coders. Another important feature is that the shape information of morphological sets used in this coder is encoded implicitly by the values of wavelet coefficients, thus avoiding the use of explicit and rate expensive shape descriptors, these proposed algorithms, while achieving nearly the same objective performance of state-of-the-art zerotree based methods, are able to produce reconstructions of a somewhat superior perceptual quality, due to a property of joint compression and noise reduction they exhibit

Published in:

Image Processing, IEEE Transactions on  (Volume:8 ,  Issue: 9 )