Implementation of Orthogonal Wavelet Transforms and their Applications

نویسندگان

  • Peter Rieder
  • Josef A. Nossek
چکیده

In this paperthe eflcient implementation of different types of orthogonal wavelet transforms with respect to practical applications is discussed. Orthogonal singlewuvelet triinsfornis being based on one scaling function and one wavelet function are used for denosing of signals. Orthogonal multiwavelets are bused on several scaling filnctions and several wavelets. Since they allow properties like regularity, orthogonality and s y t n m e t ~ ~ being impossible in the singlewavelet case, miiltiwavets are well suited bases for image compression applications. With respect to an eficient implementation of these orthogonal wcrvelet transforms approximating the exact rotation angles of the corresponding orthogonal wavelet lattice jilter:; by using very fbw CORDIC-based elementary rotations reduces the number of shift and add operations signijicuntly.. The performance of the resulting, conipututionully cheap, approximated wavelet transforms with respect to practical applications is discussed in this paper:

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تاریخ انتشار 1997