Position

Professor in computer science at the since September 2017.

This means I am both:

• teaching at the department of mathematics and computer science of the university;

• and a researcher in the Engineering science, computer science and imaging research institute , in the IGG team.

 

 

Contact

Lab. iCube, IGG team

300 bd Sébastien Brant

CS 10413

F-67412 Illkirch Cedex, France

E-mail: hetroywheeler@unistra.fr

 

CV

Diplomas: M.Eng. (diplôme d'ingénieur) Grenoble INP - Ensimag (Univ. Grenoble, 2000), M.Sc. (DEA) in applied maths (Univ. Grenoble, 2000), PhD (doctorat) in signal processing (Univ. Grenoble, 2003), Habilitation (HDR) in computer science (Univ. Grenoble, 2015).

Positions: teaching assistant Univ. Grenoble (2002-2003), postdoc UPC Barcelona (2004), tenured assistant professor (maître de conférences) Grenoble INP - Ensimag/Laboratoire Jean Kuntzmann (2004-2017, EVASION then Morpheo research teams).

 

Teaching

Teaching statement

My teaching philosophy is to help students become autonomous in their learning process. For this purpose, they need to face knowledge, problems and methods of increasing complexity according to Bloom's taxonomy. I strongly believe students can durably understand something only if the learning process follows the main ideas of Jean Houssaye's educational triangle. I also like to make students work in groups in order to confront and increase their soft skills, e.g. following an agile methodology.

 

Responsibility

• Head (with Caroline Essert) of the Image track of the Master Curriculum in Engineering (CMI) of the University of Strasbourg

 

Lectures

• Digital geometry for 1st-year master students in computer science (Spring 2018 to 2022)
• Knowledge and practice of computers for 1st-year bachelor students in maths and computer science (Spring 2019 to 2022)
• Integrative project (organizer) for 3rd-year CMI students in computer science (Spring 2022)

The computer games developed by the students in the context of this project are now part of a digital exhibition in a local museum!

• Advanced algorithms for 1st-year master students in computer science (Autumn 2018 to 2021)
• Data structures and algorithms for 2nd-year bachelor students in computer science (Autumn 2017 to 2021)
• 3D animation for 2nd-year CMI students in computer science (Autumn 2021)
• Scientific literature projects (organizer) for 2nd-year CMI students in computer science (Spring 2021)
• Applied numerical analysis for 2nd-year bachelor students in computer science (Autumn 2020)
• University work methodologies for 1st-year bachelor students in maths and computer science (Autumn 2018 and 2019)
• Algorithms and programming for 1st-year bachelor students in maths and computer science (Spring 2018)

 

Research

Research statement

My work spans computer vision and computer graphics to computational geometry and topology and to remote sensing. With an overall goal of shape analysis and understanding, my research interests include the acquisition, reconstruction and processing of 3D shapes in motion. I have worked on shapes digitised with laser scanners as well as multi-view stereo systems or medical imagery. These shapes range from human bodies and organs to animals, trees, plants or even mechanical parts. Currently, I am especially interested in trees and plants, because of their challenging geometric and topological complexities.

 

Popularisation

Check the presentation I made (in French) about digital geometry processing in 2014 (part 1, part 2). Check also this video by Eric Casella.

 

More details (works before 2016)

• Understanding digital shapes from the life sciences
• Digital geometry processing for shapes in motion
• Geometric, topological and perceptual analysis of 3D meshes

 

Keywords

Digital geometry processing, segmentation, reconstruction, geometric and topological feature computation.

 

Projects

• UrTrees (2022-2023). MITI "Citizen science" funding from the CNRS, € 15k.
• ROMI (2017-2022, as a member of the Inria MOSAIC team). H2020 European project, € 3868k.

Past projects

• SimPFI (PI, 2019-2021). IDEX funding from the University of Strasbourg, € 59k.
• Crop3D (PI, 2018-2021). CIFRE PhD scholarship from ANRT with Arvalis.
• Carambole (PI, 2016-2017). Exploratory grant from LabEx PERSYVAL-lab, € 9k.
• Digitree (PI, 2015-2018). AGIR grant from Univ. Grenoble Alpes, € 96k.
• ACHMOV (2014-2018). ANR grant, € 286k.
• ASLAAF (PI, 2014-2015). AGIR grant from Grenoble INP, € 15k.
• PADME (2013-2016). ARC6 grant from Région Rhône-Alpes, € 98k.
• MORPHO (2010-2015, coordinator from 2012 to 2015). ANR grant, € 482k.
• PlantScan3D (2009-2011). Grants from the Agropolis Foundation and Inria, € 118k.
• IDEAL (2009). BQR grant from Grenoble INP, € 40k.
• MADRAS (2008-2011). ANR grant, € 330k.
• MEGA (PI, 2006-2008). Grants from Grenoble INP, UJF and Inria, € 55k.

 

Students

PhD student

• Katia Mirande (started November 2018). Topic: 3D segmentation and growth tracking of plant point clouds in field conditions. Part of the ROMI project. Other advisor: Christophe Godin (Inria Lyon).

Former students

Postdoc

• Joris Ravaglia (2019-2020). Topic: Designing a simulator for planning Terrestrial laser scanner-based forest inventories. Part of the SimPFI project. Other advisor: Eric Casella (Forest Research, UK).
• Dobrina Boltcheva (2009-2011). Computation of the homology of simplicial complexes (2009-2010); virtual plant reconstruction mixing incomplete geometric data and a priori knowledge (2010-2011). Other advisors: Jean-Claude Léon (Grenoble INP, 2009-2010) and with Marie-Paule Cani (Grenoble INP, 2010-2011). Dobrina is now an associate professor at Univ. Nancy (IUT Saint Dié).

PhD students

• Mélinda Boukhana (2018-2021). 3D acquisition and reconstruction of crops to estimate individual leaf surfaces. Other advisor: Benoît de Solan (Arvalis). Mélinda is now an engineer working for Capgemini Engineering (Strasbourg, France).
• Romain Rombourg (2015-2019). Terrestrial laser scanner noise analysis, modelling and detection. Other advisor: Eric Casella (Forest Research, UK). Romain is now a teaching assistant at Grenoble INP - Ensimag (Grenoble, France).
• Jinlong Yang (2015-2019). Learning shape spaces of dressed 3D human models in motion. Other advisor: Stefanie Wuhrer (Inria Grenoble). Jinlong is now a postdoc at the Max Planck Institute for Intelligent Systems (Tübingen, Germany).
• Li Wang (2013-2017). Algorithms and criteria for volumetric centroidal Voronoi tessellations. Other advisor: Edmond Boyer (Inria Grenoble). Li is now a solution architect working for Alibaba Group (Shenzhen, China).
• Georges Nader (2013-2016). Evaluating the visibility threshold for a local geometric distortion on a 3D mesh and its applications. Other advisors: Florent Dupont (Univ. Lyon 1) and Kai Wang (CNRS Grenoble). Georges is now a research engineer working for Panasonic in Singapore.
  
• Romain Arcila (2008-2011). Mesh sequences: classification and segmentation methods. Other advisor: Florent Dupont (Univ. Lyon). Romain is now an engineer working for DCNS in Angoulême (France).
• Sahar Hassan (2007-2011). Integration of a priori anatomical knowledge into geometrical models. Other advisor: Georges-Pierre Bonneau (Univ. Grenoble Alpes). Sahar is now an engineer working for KLS Logistic in Grenoble (France).
  

 

Software and data sets

Software

• 3DtLaplace (related paper)
• CVT Generator (PhD work of Li Wang, related paper 1, related paper 2)
• meshJND (PhD work of Georges Nader, related paper 1, related paper 2)

Data sets

• Mesh sequences and motion capture data of dressed humans in motion (PhD work of Jinlong Yang, related paper)
• Animation skeletons for various animals (related paper)

 

Publications

 

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