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An Efficient Architecture for a Lifted 2D Biorthogonal DWT

  • Mehboob Alam
  • Wael Badawy
  • Vassil Dimitrov
  • Graham Jullien
Article

Abstract

This paper presents a new algorithm for a 2D non-separable lifted bi-orthogonal wavelet transform. The algorithm is derived by factoring complementary pairs of wavelet transform 2D filters. The results are efficient architectures for real time signal processing, which do not require transpose memory for the 2D processing of data. The proposed architecture exploits in place implementation, inherit from the algorithm, and can take advantage of both vertical and horizontal parallelism in the direct implementation. The processing in our architecture is scheduled by carefully pipelining the lifted steps, which allows for up to four times faster processing than the direct implementation. The proposed architecture operates at high speed, consumes low power and has reduced computational complexity as compared to previously published filter and lifted based bi-orthogonal wavelet architectures.

Keywords

discrete wavelet transforms lifting biorthogonal transform wavelet architectures image compression lifted architectures Mallat’s algorithms 

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Copyright information

© Springer Science + Business Media, Inc. 2005

Authors and Affiliations

  • Mehboob Alam
    • 1
  • Wael Badawy
    • 1
  • Vassil Dimitrov
    • 1
  • Graham Jullien
    • 1
  1. 1.ATIPS Laboratory, Department of Electrical and Computer EngineeringUniversity of CalgaryCalgaryCanada

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