Detail publikačního výsledku

Performance of discrete wavelet transform lifting scheme approach

MALÝ, J.; RAJMIC, P.

Originální název

Performance of discrete wavelet transform lifting scheme approach

Anglický název

Performance of discrete wavelet transform lifting scheme approach

Druh

Stať ve sborníku v databázi WoS či Scopus

Originální abstrakt

The fast lifting-based approach for the discrete wavelet transform presents a very efficient way of computing wavelet coefficients. We have successfully created a Java implementation of this coding technique for the case of CDF 9/7 filterbanks, which is a starting point of proposing lossy image compression format based on DWT, that will make use of this platform. Testing of the algorithm has confirmed it to be superior when compared to the standard convolutional approach, both in terms of computational speed and memory efficiency. The algorithm is also much simpler to implement than the standard convolutional way, because we don't need to perform manipulation on the source signal in order to archieve boundary extension and cutoff (after the transform).

Anglický abstrakt

The fast lifting-based approach for the discrete wavelet transform presents a very efficient way of computing wavelet coefficients. We have successfully created a Java implementation of this coding technique for the case of CDF 9/7 filterbanks, which is a starting point of proposing lossy image compression format based on DWT, that will make use of this platform. Testing of the algorithm has confirmed it to be superior when compared to the standard convolutional approach, both in terms of computational speed and memory efficiency. The algorithm is also much simpler to implement than the standard convolutional way, because we don't need to perform manipulation on the source signal in order to archieve boundary extension and cutoff (after the transform).

Klíčová slova

Discrete wavelet transform, fast lifting, Cohen-Daubechies-Feauveau wavelet 9/7, image compression, convolution

Klíčová slova v angličtině

Discrete wavelet transform, fast lifting, Cohen-Daubechies-Feauveau wavelet 9/7, image compression, convolution

Autoři

MALÝ, J.; RAJMIC, P.

Vydáno

04.09.2007

ISBN

978-0-387-74158-1

Kniha

Proceedings of the 12th IFIP International Conference

Strany od

231

Strany počet

9

BibTex

@inproceedings{BUT22897,
  author="Jan {Malý} and Pavel {Rajmic}",
  title="Performance of discrete wavelet transform lifting scheme approach",
  booktitle="Proceedings of the 12th IFIP International Conference",
  year="2007",
  pages="9",
  isbn="978-0-387-74158-1"
}