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Nonlinear Wavelet Transforms for Image Coding

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Title: Nonlinear Wavelet Transforms for Image Coding
Author: Claypoole, Roger L.; Davis, Geoffrey; Sweldens, Wim; Baraniuk, Richard G.
Type: Conference paper
Citation: R. L. Claypoole, G. Davis, W. Sweldens and R. G. Baraniuk, "Nonlinear Wavelet Transforms for Image Coding," vol. 1, pp. 662-667, 1997.
Abstract: We examine the central issues of invertibility, stability, artifacts, and frequency-domain characteristics in the construction of nonlinear 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 nonlinearity for use in constructing nonlinear transforms: a set of linear predictors that are chosen adaptively using a nonlinear selection function. We also describe how earlier families of nonlinear 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.
Date Published: 1997-11-01

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  • ECE Publications [1048 items]
    Publications by Rice University Electrical and Computer Engineering faculty and graduate students
  • DSP Publications [508 items]
    Publications by Rice Faculty and graduate students in digital signal processing.