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Applications of universal context modeling to lossless compression of gray-scale images

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3 Author(s)
Weinberger, M.J. ; IBM Almaden Res. Center, San Jose, CA, USA ; Rissanen, J. ; Arps, R.B.

Inspired by theoretical results on universal modeling, a general framework for sequential modeling of gray-scale images is proposed and applied to lossless compression. The model is based on stochastic complexity considerations and is implemented with a tree structure. It is efficiently estimated by a modification of the universal algorithm context. Several variants of the algorithm are described. The sequential, lossless compression schemes obtained when the context modeler is used with an arithmetic coder are tested with a representative set of gray-scale images. The compression ratios are compared with those obtained with state-of-the-art algorithms available in the literature, with the results of the comparison consistently favoring the proposed approach

Published in:

Image Processing, IEEE Transactions on  (Volume:5 ,  Issue: 4 )

Date of Publication:

Apr 1996

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