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Lossless compression of multispectral image data

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3 Author(s)
Memon, N.D. ; Dept. of Comput. Sci., Arkansas State University, AR, USA ; Sayood, K. ; Magliveras, S.S.

While spatial correlations are adequately exploited by standard lossless image compression techniques, little success has been attained in exploiting spectral correlations when dealing with multispectral image data. The authors present some new lossless image compression techniques that capture spectral correlations as well as spatial correlation in a simple and elegant manner. The schemes are based on the notion of a prediction tree, which defines a noncausal prediction model for an image. The authors present a backward adaptive technique and a forward adaptive technique. They then give a computationally efficient way of approximating the backward adaptive technique. The approximation gives good results and is extremely easy to compute. Simulation results show that for high spectral resolution images, significant savings can be made by using spectral correlations in addition to spatial correlations. Furthermore, the increase in complexity incurred in order to make these gains is minimal

Published in:

Geoscience and Remote Sensing, IEEE Transactions on  (Volume:32 ,  Issue: 2 )

Date of Publication:

Mar 1994

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