26 citations · 123 across the 11 of their papers we have counts for
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math.NA2015★ 9 cited
Pseudo-inverses of difference matrices and their application to sparse signal approximation
Gerlind Plonka, Sebastian Hoffmann, Joachim Weickert
We derive new explicit expressions for the components of Moore-Penrose inverses of symmetric difference matrices. These generalized inverses are applied in a new regularization app…
math.NA2015★ 19 cited
A deterministic sparse FFT algorithm for vectors with small support
Gerlind Plonka, Katrin Wannenwetsch
In this paper we consider the special case where a discrete signal of length N is known to vanish outside a support interval of length . If the support length …