Detail publikačního výsledku

Real-Time lifting wavelet transform algorithm

PRŮŠA, Z.; RAJMIC, P.

Originální název

Real-Time lifting wavelet transform algorithm

Anglický název

Real-Time lifting wavelet transform algorithm

Druh

Článek recenzovaný mimo WoS a Scopus

Originální abstrakt

When performing a wavelet transform of one-dimensional signals, it is often impractical or even impossible to load whole input signal at once. This is the case of long audio files or live performances, when real-time processing is necessary. The algorithm presented in this paper allows computation of the forward and inverse lifting wavelet transform of independent segments of the input signal much like well known overlap-add or overlap-save algorithms works for convolution. The goal of the algorithm is to find such overlaps between segments so there is no border distortion which may occur when no overlaps are used due to the difference of wavelet coefficients at the segment borders.

Anglický abstrakt

When performing a wavelet transform of one-dimensional signals, it is often impractical or even impossible to load whole input signal at once. This is the case of long audio files or live performances, when real-time processing is necessary. The algorithm presented in this paper allows computation of the forward and inverse lifting wavelet transform of independent segments of the input signal much like well known overlap-add or overlap-save algorithms works for convolution. The goal of the algorithm is to find such overlaps between segments so there is no border distortion which may occur when no overlaps are used due to the difference of wavelet coefficients at the segment borders.

Klíčová slova

lifting scheme, wavelet transform, real-time

Klíčová slova v angličtině

lifting scheme, wavelet transform, real-time

Autoři

PRŮŠA, Z.; RAJMIC, P.

Rok RIV

2012

Vydáno

20.09.2011

ISSN

1213-1539

Periodikum

Elektrorevue - Internetový časopis (http://www.elektrorevue.cz)

Svazek

2011

Číslo

3

Stát

Česká republika

Strany od

53

Strany do

59

Strany počet

7

URL

http://www.elektrorevue.cz/en/articles/analogue-technics/0/real-time-lifting-wavelet-transform-algorithm/

BibTex

@article{BUT75054,
  author="Zdeněk {Průša} and Pavel {Rajmic}",
  title="Real-Time lifting wavelet transform algorithm",
  journal="Elektrorevue - Internetový časopis (http://www.elektrorevue.cz)",
  year="2011",
  volume="2011",
  number="3",
  pages="53--59",
  issn="1213-1539",
  url="http://www.elektrorevue.cz/en/articles/analogue-technics/0/real-time-lifting-wavelet-transform-algorithm/"
}