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ADAPTIVE WAVELET TECHNIQUES FOR COMPRESSING DIGITAL MAMMOGRAMS

Abstract

In this work we investigate the possible benefit of employing adaptive wavelet algorithms instead of the classical fixed pyramidal wavelet decomposition for the compression of digital mammograms. In particular, we target on adaptive wavelet packet and NSMRA decompositions. We observe that information cost function optimized wavelet packet subband structures do not offer compression performance gain in this case whereas NSMRA decompositions moderately improve the results of classical wavelet decompositions. Due to the lack of fast and reliable search algorithms fixed NSMRA decompositions need to be generated and employed for classes of similar images.

Keywords:

wavelet compression, wavelet packets, time-varying decomposition, NSMRA, mammograms

Details

Issue
Vol. 3 No. 4 (1999)
Section
Research article
Published
1999-12-29
Licencja:
Creative Commons License

This work is licensed under a Creative Commons Attribution 4.0 International License.

Author Biographies

ALFRED BRUCKMANN,
University of Salzburg, RIST++ & Department o f Scientific Computing



HARALD FLATSCHER,
University of Salzburg, RIST++ & Department of Scientific Computing



ANDREAS UHL,
University of Salzburg, RIST++ & Department o f Scientific Computing



Authors

  • ALFRED BRUCKMANN

    University of Salzburg, RIST++ & Department o f Scientific Computing
  • HARALD FLATSCHER

    University of Salzburg, RIST++ & Department of Scientific Computing
  • THOMAS SCHELL

    University of Salzburg, RIST++ & Department of Scientific Computing
  • ANDREAS UHL

    University of Salzburg, RIST++ & Department o f Scientific Computing

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