Department of Mathematics
 Search | Help | Login | pdf version | printable version

Math @ Duke



Publications [#318288] of Ingrid Daubechies

Papers Published

  1. Cohen, A; Daubechies, I; Feauveau, J, Biorthogonal bases of compactly supported wavelets, Communications on Pure and Applied Mathematics, vol. 45 no. 5 (January, 1992), pp. 485-560, WILEY [doi]
    (last updated on 2019/05/24)

    Orthonormal bases of compactly supported wavelet bases correspond to subband coding schemes with exact reconstruction in which the analysis and synthesis filters coincide. We show here that under fairly general conditions, exact reconstruction schemes with synthesis filters different from the analysis filters give rise to two dual Riesz bases of compactly supported wavelets. We give necessary and sufficient conditions for biorthogonality of the corresponding scaling functions, and we present a sufficient conditions for the decay of their Fourier transforms. We study the regularity of these biorthogonal bases. We provide several families of examples, all symmetric (corresponding to “linear phase” filters). In particular we can construct symmetric biorthogonal wavelet bases with arbitraily high preassigned regularity; we also show how to construct symmetric biorthogonal wavelet bases “close” to a (nonsymmetric) orthonormal basis. Copyright © 1992 Wiley Periodicals, Inc., A Wiley Company
ph: 919.660.2800
fax: 919.660.2821

Mathematics Department
Duke University, Box 90320
Durham, NC 27708-0320