324 citations · 1.4k across the 135 of their papers we have counts for
4 papers · 1 filter
A Unitary Extension Principle for Shearlet Systems
Bin Han, Gitta Kutyniok, Zuowei Shen
In this paper, we first introduce the concept of an adaptive MRA (AMRA) structure which is a variant of the classical MRA structure suited to the main goal of a fast flexible decom…
Sparse Recovery from Combined Fusion Frame Measurements
Petros T. Boufounos, Gitta Kutyniok, Holger Rauhut
Sparse representations have emerged as a powerful tool in signal and information processing, culminated by the success of new acquisition and processing techniques such as Compress…
A quantitative notion of redundancy for finite frames
Bernhard G. Bodmann, Peter G. Casazza, Gitta Kutyniok
The objective of this paper is to improve the customary definition of redundancy by providing quantitative measures in its place, which we coin upper and lower redundancies, that m…
Fusion Frames: Existence and Construction
Robert Calderbank, Peter G. Casazza, Andreas Heinecke +2
Fusion frame theory is an emerging mathematical theory that provides a natural framework for performing hierarchical data processing. A fusion frame is a frame-like collection of s…