97 citations · 336 across the 30 of their papers we have counts for
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Spectrum-Adapted Tight Graph Wavelet and Vertex-Frequency Frames
David I Shuman, Christoph Wiesmeyr, Nicki Holighaus +1
We consider the problem of designing spectral graph filters for the construction of dictionaries of atoms that can be used to efficiently represent signals residing on weighted gra…
Efficient algorithms for discrete Gabor transforms on a nonseparable lattice
Christoph Wiesmeyr, Nicki Holighaus, Peter L. Soendergaard
The Discrete Gabor Transform (DGT) is the most commonly used transform for signal analysis and synthesis using a linear frequency scale. It turns out that the involved operators ar…
Structure of nonstationary Gabor frames and their dual systems
Nicki Holighaus
We investigate the structural properties of dual systems for nonstationary Gabor frames. In particular, we prove that some inverse nonstationary Gabor frame operators admit a Walnu…