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   -> Volume 7, Issue 1


Preprint: Nonlinear wavelet transform for image coding
 
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Wim Sweldens (wim)
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PostPosted: Mon Dec 22, 1997 10:57 pm    
Subject: Preprint: Nonlinear wavelet transform for image coding
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#3 Preprint: Nonlinear wavelet transform for image coding

Nonlinear wavelet transform for image coding

Authors: R. Claypoole, G. Davis, W. Sweldens, and R. Baraniuk

Abstract: We examine the central issues of invertibility, stability,
artifacts, and frequency-domain characteristics in the construction of
non-linear analogs of the wavelet transform. The lifting framework for
wavelet construction motivates our analysis and provides new insight
into the problem. We describe a new type of non-linearity for use in
constructing non-linear transforms: a set of linear predictors that
are chosen adaptively using a non-linear selection function. We also
describe how earlier families of non-linear filter banks can be
extended through the use of prediction functions operating on a causal
neighborhood. We present preliminary results for a synthetic test
image.

Status: To be published in the proceedings of the 1997 Asilomar
conference on Signals, Systems, and Computers.

.ps .ps.gz and .pdf files can be found at

http://cm.bell-labs.com/who/wim/papers/papers.html#asil97
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