Memory hierarchy energy cost of a direct filtering implementation of the wavelet transform

  • Authors:

  • Bert Geelen;Gauthier Lafruit;V. Ferentinos;R. Lauwereins;Diederik Verkest

  • Affiliations:

  • ,IMEC vzw, Leuven, Belgium;IMEC vzw, Leuven, Belgium;,IMEC vzw, Leuven, Belgium;,IMEC vzw, Leuven, Belgium;,IMEC vzw, Leuven, Belgium

  • Venue:
  • PATMOS'05 Proceedings of the 15th international conference on Integrated Circuit and System Design: power and Timing Modeling, Optimization and Simulation
  • Year:
  • 2005

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Abstract

A new implementation of the Wavelet Transform (WT), foregoing the traditional recursive filtering operations and with promising memory requirement properties is described: the Direct Filtering implementation. Its memory hierarchy energy performance is compared to the traditional Level-By-Level implementation and the memory optimized Block-based approach. This comparison is performed using the Memory Hierarchy Layer Assignment tool (MHLA). The results indicate the Direct Filtering implementation described here as such is not a likely candidate to replace the other implementations, but it has improvement possibilities and characteristics that can make it useful in certain contexts.