Detail publikačního výsledku

Using Fractal Prediction in Zerotree Wavelet Coding

Stanislav Uchytil,Václav Zeman

Originální název

Using Fractal Prediction in Zerotree Wavelet Coding

Anglický název

Using Fractal Prediction in Zerotree Wavelet Coding

Druh

Stať ve sborníku v databázi WoS či Scopus

Originální abstrakt

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 zavelet coefficients and found that the prediction of entire zavelet 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 zavelet 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.

Anglický abstrakt

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 zavelet coefficients and found that the prediction of entire zavelet 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 zavelet 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.

Klíčová slova

Wavelet Coding

Klíčová slova v angličtině

Wavelet Coding

Autoři

Stanislav Uchytil,Václav Zeman

Vydáno

13.09.2006

Nakladatel

Brno

Místo

Nové Město na Moravě

Kniha

Proceedings of Research in Telecommunication Technology 2006

Strany od

426

Strany počet

6

BibTex

@inproceedings{BUT21875,
  author="Stanislav {Uchytil} and Václav {Zeman}",
  title="Using Fractal Prediction in Zerotree Wavelet Coding",
  booktitle="Proceedings of Research in Telecommunication Technology 2006",
  year="2006",
  pages="6",
  publisher="Brno",
  address="Nové Město na Moravě"
}