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ICIP
1997
IEEE

Zerotree Wavelet Coding Using Fractal Prediction

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Zerotree Wavelet Coding Using Fractal Prediction
Fractal image coding can be seen as spectral prediction of coefficients in the wavelet decomposition of an image. Fine scale coefficients are described by shifted and scaled coefficients from the next coarser frequency scale. We analyzed the ability of fractal coders to predict wavelet coefficients and found that the prediction of entire wavelet subtrees - as done by conventional spatial domain fractal coders - leads to poor coding results. This paper discusses how to design an improved fractal coder in the wavelet domain and proposes a new hybrid fractal-wavelet zerotree coding scheme. Although the coding results of the new coder outperform conventional fractal coders, they are unfortunately inferior compared with a pure wavelet version of this zerotree coder.
Kai Uwe Barthel, S. Brandau, W. Hermesmeier, Guido
Added 06 Aug 2010
Updated 06 Aug 2010
Type Conference
Year 1997
Where ICIP
Authors Kai Uwe Barthel, S. Brandau, W. Hermesmeier, Guido Heising
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