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Resolution Scalable Image Coding with Dyadic Complementary Rational Wavelet Transforms

  • F. Petngang
  • R. M. Dansereau
  • C. Joslin
Part of the Lecture Notes in Computer Science book series (LNCS, volume 6134)

Abstract

Traditional wavelet-based image coders use dyadic multi-resolution decompositions, resulting in spatial resolutions that are also dyadic in scale, i.e., powers of 1/2 the original resolution. In this paper, we increase the set of decodable spatial resolutions beyond dyadic scales by introducing a two-dimensional wavelet decomposition made of combining wavelet transforms of non-integer dilation factors. We describe how the proposed wavelet decomposition can produce spatial resolutions related to the original resolution by dyadic and non-dyadic ratios, and present how the resulting subband structure can be made compatible with zerotree-based subband coders.

Keywords

Image compression dyadic and non-dyadic spatial scalability rational dilation wavelet transform 

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Copyright information

© Springer-Verlag Berlin Heidelberg 2010

Authors and Affiliations

  • F. Petngang
    • 1
  • R. M. Dansereau
    • 1
  • C. Joslin
    • 1
  1. 1.Department of Systems and Computer EngineeringCarleton UniversityOttawaCanada

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