Professor Pierre Vandergheynst

I am Associate Professor of Electrical Engineering at the Electrical Engineering Institute and head of the LTS2 lab. My research interests include harmonic analysis, information theory, non-linear sparse representations and mathematical image processing with applications to higher dimensional and complex data processing. Follow the links on this page if you want more details.

Personal News

• [December 2009] I gave a keynote talk at the MIA workshop (Mathematics and Image Analysis). Slides.
• [September 2009] I gave a keynote talk at the Gretsi symposium. Slides.
• [August 2009] I gave a keynote talk at the forthcoming ACM/IEEE ICDSC conference. Slides.
• [April 2009] I gave a talk on architecture for compressed sensing at the SIU 2009 meeting, Side, Turkey.
• [December 2008] I gave a talk on Compressed Sensing at the Center for Integrated Systems here at EPFL. Slides here.
• [December 2008] I'll give an invited talk at the Workshop on Sparsity and Large Scale Inverse Problems in Cambridge, UK.
• [April 2008] Slides of my seminar on Spectral Wavelets can be found here.
• [October 2007] I've been appointed Associate Editor of IEEE Trans. Signal Processing.
• [September 2007] I'll be at the Mathematical Image Processing workshop in Marseille.
• [September 2007] Our research on data processing on surfaces is a laureate of the Apple Research and Technology Support Grant.
• [August 2007] I'll be organizing a special session on Wavelets in Physics at Wavelet XII, during the SPIE International Symposium on Optics & Photonics 2007, August 26th-30th, San Diego. I'll also give an invited talk in the special session on Sparsity.
• [March 2007] I'll be visiting the maths/stats department at Concordia University, Montreal.
• [BOOK] Long awaited but finally here! Our book, 2-D Wavelets and their relatives, published by Cambridge University Press, is out! See here for a description.

LTS2 News

• [December 2009] New paper on Spread spectrum for accelerated acquisition in magnetic resonance imaging submitted to IEEE Transactions on Image Processing.
• [November 2009] New paper on Omnidirectional Structure from Motion submitted to IEEE Transactions on Image Processing.
• [November 2009] New paper on Spectral Graph Wavelets submitted to Applied and Computational Harmonic Analysis.
• [October 2009] New paper accepted in Applied and Computational Harmonic Analysis.
• [September 2009] Alexandre Alahi has won the 2009 ICDSC Challenge. The challenge, held yearly during the joint IEEE-ACM conference on Smart and Distributed Camera Systems, aims at benchmarking algorithms on a common data set. This edition focused on algorithms to detect and track pedestrians in camera networks.
• [August 2009] New paper accepted in IEEE Transactions on Neural Networks
• [July 2009] Paper "Spread spectrum for imaging techniques in radio interferometry" by Y. Wiaux et al. submitted to Monthly Notices of the Royal Astronomical Society. More on Y. Wiaux's homepage.
• [July 2009] Paper "Compressed sensing for radio interferometry: spread spectrum imaging techniques" by Y. Wiaux et al. invited at SPIE 2009 Conference WAVELET XIII. More on Y. Wiaux's homepage.
• [July 8, 2009] Official release of the Basis Pursuit De Quantization (BPDQ) toolbox by D. Hammond, L. Jacques and M.J. Fadili.
• [June 30, 2009] Three papers accepted to ICIP'09:
  • "Optical Flow and Depth from Motion for Omnidirectional Images Using a TV-L1 Variational Framework on Graphs" by L. Bagnato, P. Frossard, and P. Vandergheynst;
  • "TV-Regularized Generation of Planar Images from Omnicams" by Y. Boursier, L. Jacques, D. Raboud, P. Frossard, M.J. Fadili, P. Vandergheynst (pdf);
  • "Dequantizing Compressed Sensing with Non-Gaussian Constraints" by L. Jacques, D. K. Hammond, and M. J. Fadili (pdf);
• [April 2009] Paper "Wavelet domain Bayesian denoising of string signal in the cosmic microwave background" by D. K. Hammond, Y. Wiaux and P. Vandergheynst accepted for publication in Monthly Notices of the Royal Astronomical Society
• [April 2009] New paper submitted to Appl. Comp. Harmonic Analysis.
• [April 2009] Paper "A Sparsity Constrained Inverse Problem to Locate People in a Network of Cameras" by A. Alahi, Y. Boursier, L. Jacques, P. Vandergheynst accepted to DSP 2009.
• [March 2009] Geometric video approximations with matching pursuit accepted at IEEE TIP.
• [February 2009] Classification via incoherent subspaces submitted to PAMI.
• [February 2009] Paper "Compressed sensing imaging techniques for radio interferometry" by Y. Wiaux et al. accepted for publication in Monthly Notices of the Royal Astronomical Society
• [February 2009] 2 papers submitted to the ICIP'09 conference and one to the DSP'09 conference (more...)
• [January 2009] We have open PhD and Post Doc positions. See our job offers !
• [December 31, 2008] Paper "Compressed sensing imaging techniques for radio interferometry" by Y. Wiaux et al. submitted to Monthly Notices of the Royal Astronomical Society. A poster (PDF) on the same subject has been presented at "Workshop on Sparsity and its application to large inverse problems" (Cambridge University, Cambridge UK).
• [December 2008] Our 4 papers submitted to ICASSP have been accepted !
• [December 14-15, 2008] Five of us participate in the "Workshop on Sparsity and its application to large inverse problems" (Cambridge University, Cambridge UK) organised by several members of the INSPIRE network.
• Igor Carron posted an article on his famous Compressed Sensing blog "Nuit Blanche" about the two ICASSP'09 papers : "CMOS Compressed Imaging by Random Convolution" and "Compressive Sampling of Pulse Trains : Spread the Spectrum !"
• Two of our 4 ICASSP'09 papers available here :
  • "CMOS Compressed Imaging by Random Convolution", by L. Jacques, P. Vandergheynst, A. Bibet, V. Majidzadeh, A. Schmid, and Y. Leblebici. (pdf?, more...)
  • "Compressive Sampling of Pulse Trains : Spread the Spectrum !", by Farid M. Naini, Rémi Gribonval, Laurent Jacques and Pierre Vandergheynst. (pdf?, more...)
• [September 26th, 2008] In fact we meant FOUR papers submitted to ICASSP :)
• [September 26th, 2008] Three papers submitted to ICASSP !
• [September 1st, 2008] Radio Interview of Y. Wiaux on the "International Radio-Telescope Project Square Kilometer Array (SKA)", in "La Science de Pain" (RSR Radio).
• [July 2008] New paper on learning bimodal structures in audio-visual signals submitted to IEEE Trans. Neural Networks.
• [June 2008] Gabriel Peyré at lts2 for a talk on manifold models in image processing.
• [May 2008] Paper on "Shift-invariant dictionary learning for sparse representations: extending K-SVD" by B. Mailhé, S. Lesage, R. Gribonval, P. Vandergheynst and F. Bimbot, accepted in EUSIPCO08 conference.
• [May 2008] Paper on "Learning Sparse Generative Models of Audiovisual Signals" by G. Monaci, F. Sommer and P. Vandergheynst, accepted in EUSIPCO08 conference.
• [May 2008] Paper on "Approximate nearest neighbours in a set of compressible signals" by Ph. Jost and P. Vandergheynst, accepted in EUSIPCO08 conference.
• [May 2008] Paper on "Dictionary Identifiability from Few Training Samples" by R. Gribonval and K. Schnass, accepted in EUSIPCO08 conference.
• [May 2008] Paper on "Shape from Texture for Omnidirectional Images" by L. Jacques, E. de Vito, L. Bagnato and P. Vandergheynst, accepted in EUSIPCO08 conference.
• [May 2008] Two journal papers on sparsity and compressed sensing published in IEEE Trans. Sig. Process. and IEEE Trans. Inf. Theory. See our publications for more details.
• [April 2008] Our paper on random projections of sampled manifolds has been accepted at ICIP !
• [April 2008] New paper "The Continuous Wavelet Transform on Conic Sections" published in IJWMIP.
• [February 2008] New paper "Learning Sparse Generative Models of Audiovisual Signals" submitted to EUSIPCO08.
• [February 2008] New paper "On finding nearest neighbours in a set of compressible signals" invited to EUSIPCO08, special session on sparsity.
• [February 2008] New paper "Shift-invariant dictionary learning for sparse representations: extending K-SVD" submitted to EUSIPCO08.
• [February 2008] New paper on "Shape from Texture for Omnidirectional Images" by L. Jacques, E. de Vito, L. Bagnato and P. Vandergheynst, submitted to EUSIPCO08. (... more).
• [January 2008] New paper on random projections of sampled manifolds submitted to ICIP 2008. See our publications for more details.
• [January 7-8 2008] Pierre Vandergheynst and Yves Wiaux interviewed on the Public Swiss Radio RSR in the "Capsule Multimédia de Pain" (Listen: 1, 2). More details...
• [January 2008] Ana Dimitrijevic and Oscar Divorra will receive an IEEE Best Young Author Paper Award for this IEEE Trans. Image Process. paper.

• [December 2007] Paper "A geometrical Study of Matching Pursuit Parametrization"?, by L. Jacques? and C. De Vleeschouwer, accepted to IEEE Trans. Sig. Process.
• [October 2007] New paper on wavelet on the hyperboloid, published in Applied and Computational Harmonic Analysis.
• [October 2007] Our research gets boosted by the 2007 Apple ARTS award !
• [August 2007] New paper on wavelets on conic sections published in J. Fourier Analysis and Applications.
• [July 2007] New paper on omnidirectional image processing published in IEEE Trans. Image Process.
• [June 2007] New paper on finding nearest neighbours in a set of compressible signals submitted to IEEE Trans. Sig. Process.
• [May 2007] Our paper on average case analysis of thresholding has been accepted in IEEE Sig. Process. Letters.
• [May 2007] Our paper on wavelet transforms on conic sections has been accepted to Int. J. Wavelets and Multires. Inf. Process.
• [May 2007] New paper on average case analysis of multichannel greedy algorithms submitted to J. Fourier Analysis and Applications.
• [Spring 2007] Open position for a PhD student/Research assistant. See here!
• As of January 2007, LTS2 is an official partner team (équipe associée) of INRIA. For the next three years we will thus closely collaborate with the METISS team (and more particularly with Rémi Gribonval) at INRIA, Rennes.
• [February 2007] New paper on active contours for omnidirectional images accepted in IEEE Trans. Image Process.
• [February 2007] New paper on average case analysis of thresholding submitted to IEEE Sig. Process. Letters.
• [February 2007] New paper on global minimizers of the active contour model accepted in the Journal of Mathematical Imaging and Vision.
• [February 2007] New paper on wavelets on conic sections submitted to the Int. J. Wavelets and Multires. Inf. Process.
• [January 2007] New paper accepted in Applied and Computational Harmonic Analysis.
• [January 2007] New paper accepted in the Journal of Fourier Analysis and Applications.