Adaptive Multiresolution Analysis Structures and Shearlet Systems

  • Authors:
  • Bin Han;Gitta Kutyniok;Zuowei Shen

  • Affiliations:
  • bhan@ualberta.ca;kutyniok@math.uni-osnabrueck.de;matzuows@nus.edu.sg

  • Venue:
  • SIAM Journal on Numerical Analysis
  • Year:
  • 2011

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Abstract

In this paper, we first introduce the concept of an adaptive multiresolution analysis (AMRA) structure, which is a variant of the classical MRA structure well suited to the main goal of a fast flexible decomposition strategy adapted to the data at each decomposition level. We then study this novel methodology for the general case of affine-like systems and derive a unitary extension principle (UEP) for filter design. Finally, we apply our results to the directional representation system of shearlets. This leads to a comprehensive theory for fast decomposition algorithms associated with shearlet systems which encompasses tight shearlet frames with spatially compactly supported generators within such an AMRA structure. Also, shearlet-like systems associated with parabolic scaling and unimodular shear matrices are studied within this framework.