Toward robust analysis of unstructured point-cloud

I am a CNRS researcher, working at the STORM research group, in the IRIT laboratory, Toulouse.
I am also an associate researcher of Archeovision, a CNRS laboratory studying how Cultural Heritage researches can be leveraged by the acquisition, modeling and processing of 3D data.

My research interests focus on the analysis of unstructured data (usually point-clouds) generated by acquiring a physical object or scene, a very hot topic in several research communities (Computer&Graphics, Pattern Recognition, …) and in the industry. Above all the research aspects, I’m considering the following challenges: 1) there is currently no practical formalism allowing to characterize shapes at locals, medium and large scales at once, 2) the notion of a shape scale within an object is still ill-defined, despite a wide range of attempts, 3) very few studies have been published on the transitions between the pertinent scales and shapes of a 3D model.

In addition to these theoretical challenges, I’m also very interested in the applications that could be enhanced by more efficient analysis of raw point clouds: cleaning, reconstruction, abstraction, completion, recognition, etc.

I’ve also a growing interest on color processing, using geometrical properties of colors. We call that Structural Color Processing.


We are recruiting students and post-doc,
Checkout details and other open calls on our group webpage. Spontaneous application are also welcome: contact me by email with a project abstract or proposal.

News

Last update: September 17th, 2019.
  • September 17th 2019: Our paper Real-Time 3D Reconstruction of Complex Scenes Using Single-Photon lidar: When Image Processing Meets Computer Graphics has been conditionally accepted at Nature Communications.
  • May 21th 2019: New paper under submission and published on arXiv, entitled Real-Time 3D Reconstruction of Complex Scenes Using Single-Photon lidar: When Image Processing Meets Computer Graphics.
  • May 18th 2019: Google Summer of Code 2019 has started, Necip Yildiran is working on making OpenGR working directly on CGAL data-structures.
  • April 15th 2019: New paper accepted at Computer & Graphics, first authored by Sara Casti, and entitled Skeleton Based Cage Generation Guided by Harmonic Fields.
  • April 10th 2019: Our contribution to the SHREC’19 track Feature Curve Extraction on Triangle Meshes will be presented at the 2019 Eurographics Workshop on 3D Object Retrieval.
  • February 27th 2019: I am co-mentoring a project for the next Google Summer of Code with CGAL. Links:
  • November 13th 2018: This week we are in Poitiers for the French Computer Graphics conference JFIG. Anahid Ghazanfarpour and Thibault Lejemble will present their latest results on mesh simplification and point-cloud analysis respectively. Anahid got the best student paper award.
  • October 20th 2018: Our paper Dynamic implicit muscles for character skinning first authored by Valentin Roussellet has been conditionally accepted to Computer and Graphics (CAG).
  • September 2018: Claudio Mura is joining our group as visiting researcher for 4 months, and will be working on point-based shape analysis.
  • September 2018: Our ANR project MCG-Rad is about to start in the upcoming months. We will study Monte-Carlo Global Radiative Forcings Computation in collaboration with the laboratories LMD/IPSL, and LAPLACE, and also MesoStar.
  • July 24th 2018: I am now an Associate Researcher of the CNRS laboratory Archeovision.
  • July 12th 2018: Our paper Automated Markerless Registration of Point Clouds from TLS and Structured Light Scanner for Heritage Documentation authored by Jie Shao has been accepted for publication in the Elsevier Journal of Cultural Heritage.
  • July 11th 2018: I served on the Best Paper Selection Committee for the Eurographics Symposium on Geometry Processing (SGP) 2018.
  • April 18th 2018: We are recruiting a research engineer to transfer our Color Palette Exploration approach into commercial software. Checkout details here.
  • previous entries …

Affiliations:

  • CNRS, IRIT, Université de Toulouse, INPT, UPS, UT1C, UT2J, France.
  • CNRS, Archeovision, Université de Bordeaux, France.

Timeline

  • 2016-Now: CNRS researcher (chargé de recherche) at IRIT (Toulouse, France), at the STORM research group.
  • 2014-2016: Post-doc at IRIT, Université Paul-Sabatier (Toulouse, France), with David Vanderhaeghe,
  • 2013-2014: Post-doc at University College London working with Niloy Mitra,
  • 2012-2013: Post-doc at Inria Bordeaux Sud-Ouest (France), working with Pascal Barla, Gaël Guennebaud and ArcheoVision,
  • 2009-2012: PhD thesis at Inria Bordeaux Sud-Ouest (France), supervised by Patrick Reuter and Christophe Schlick.

Research interests (see publication and research pages for details)

  • 3D shape analysis: focusing on acquired data, possibly with complex geometry and multiple pertinent scales
  • 3D shape registration: focusing on global (no input pose) rigid registration with partial overlap,
  • Semi-automatic systems: mixing efficient computations and interaction for real-time solutions,
  • Structural Color Processing.

Students

Opportunities: checkout https://www.irit.fr/STORM/site/open-positions/.

PhD students:

  • Jie Shao (co-advisor: Wuming Zhang): point-cloud registration and processing
  • Thibault Lejemble (co-advisor: Loic Barthe): shape analysis
  • Anahid Ghazanfarpour (co-advisor: Jean-Pierre Jessel): mesh processing

Engineers (Scientific Supervision):

  • Clément Rodrigues Viguier (co-supervisor: David Vanderhaeghe) [Méso-Star]: Structural Color Processing
  • Chems-Eddine Himeur (co-supervisor: Mathias Paulin): Appearance-preserving mesh decimation

Master students:

Undergrad students:

Former students:

  • Chems-Eddine Himeur: Deep Learning for point-based shape analysis
  • Filippo Fanni (co-advisor: David Vanderhaeghe): Structural Color Processing
  • Paul Bernardi (co-advisor: David Vanderhaeghe): Structural Color Processing
  • Céline Michaud (co-advisor: Mathias Paulin. Company: Oktal-SE): mesh processing
  • Baptiste Delos (co-advisor: David Vanderhaeghe): Structural Color Processing
  • Fatemi Arezou (co-advisor: David Vanderhaeghe): real-time rendering
  • Xavier Chalut (co-advisor: Jean-Pierre Jessel): mesh processing
  • Georges Nader (co-advisor: Gaël Guennebaud): shape analysis
  • Bastien Perpère (co-advisors: Gaël Guennebaud, Pascal Barla. Company: The Foundry): rendering