DanskDTU.dkIndexContactPhone bookDTU AlumniPortalen
Title: Stability of wavelet frames with matrix dilations
Type: Journal articleJournal article
Participant(s):
Author:  Christensen, Ole (Cwisno: 4715)
Technical University of Denmark
Email:

Forfatter:  Sun, Wenchang
Technical University of Denmark

Abstract: Under certain assumptions we show that a wavelet frame

{Tau(A(j), b(j,k))psi} (j,k is an element of Z) := {vertical bar detA(j)vertical bar(-1/2) psi(A(j)(-1)(x - b(j,k)))} (j,k is an element of Z)

in L-2(R-d) remains a frame when the dilation matrices A(j) and the translation parameters b(j,k) are perturbed. As a special case of our result, we obtain that if {Tau(A(j), A(j)Bn)psi} (j is an element of Z, n is an element of Zd) is a frame for an expansive matrix A and an invertible matrix B, then {Tau(A'(j), A(j)B lambda(n))psi}(j is an element of Z,) (n is an element of) (Zd) is a frame if vertical bar vertical bar A(-j)A'(j) - I vertical bar vertical bar(2) <= epsilon and vertical bar vertical bar lambda(n) - n vertical bar vertical bar infinity <= eta for sufficiently small epsilon,eta > 0.
Published: in journal: American Mathematical Society. Proceedings (ISSN: 0002-9939) (DOI: http://dx.doi.org/10.1090/S0002-9939-05-08134-7), vol: 134, issue: 3, pages: 831-842, 2006
DOI:
See the publication in DTU Orbit See the publication in DTU Orbit

Top
Matematiktorvet303 BDK-2800 Kgs. LyngbyTel +45 4525 3031VAT 63393010EAN 5798000428515
Cookies