N. Tremblay (INRIA Rennes\, EPFL Lausanne) : Filterbanks for graph signal processing

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Date(s) - 09/10/2015
14 h 00 min - 15 h 00 min

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Titre : Filterbanks for graph signal processing.\n\nRésumé : I will start with an introduction to the emerging (and exciting) field of graph signal processing. I will then raise the question of filterbanks for graph signals\, and identify the main difficulties when attempting to define such filterbanks by analogy to the classical 1D discrete case. I further propose a construction that takes into account a decomposition of the graph in a partition of subgraphs: local graph Fourier bases of each subgraph are used as building blocks for the filterbanks. I finally show applications through compression and denoising experiments.\nIf time allows\, I will finish with a short presentation of my latest research project: accelerating the spectral clustering algorithm by graph filtering random signals.\nHope to see you there!

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