On hybrid directional transform-based intra-band image coding

Research output: Chapter in Book/Report/Conference proceedingChapterpeer-review

3 Citations (Scopus)

Abstract

In this paper, we propose a generic hybrid oriented-transform and wavelet-based image representation for intra-band image coding. We instantiate for three popular directional transforms having similar powers of approximation but different redundancy factors. For each transform type, we design a compression scheme wherein we exploit intra-band coefficient dependencies. We show that our schemes outperform alternative approaches reported in literature. Moreover, on some images, we report that two of the proposed codec schemes outperform JPEG2000 by over 1 dB. Finally, we investigate the trade-off between oversampling and sparsity and show that, at low rates, hybrid coding schemes with transform redundancy factors as high as 1.25 to 5.8 are capable in fact of outperforming JPEG2000 and its critically-sampled wavelets.
Original languageEnglish
Title of host publicationAdvanced Concepts for Intelligent Vision Systems
EditorsJ. Blanc-talon, W. Philips, D. Popescu, P. Scheunders
PublisherSpringer Verlag
Pages1049-1060
Number of pages12
Volume4678
Publication statusPublished - Aug 2007

Publication series

NameLecture Notes in Computer Science

Bibliographical note

J. Blanc-Talon, W. Philips, D. Popescu, P. Scheunders

Keywords

  • data compression
  • image coding
  • image representation
  • wavelet transforms

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