I am a permanent CNRS research scientist (Chargé de Recherche) at the LASMEA laboratory in Clermont-Ferrand, France, since October 2004 and a visiting professor at DIKU in Copenhagen, Denmark for 2006-2009. Before that, I was a postdoctoral researcher at the University of Oxford, UK, in the Visual Geometry Group, under the supervision of Prof. Andrew Zisserman. I obtained my Habilitation Degree (HDR - Habilitation à Diriger des Recherches) from Université Blaise Pascal, Clermont II, in June 2008. I did my PhD in the Perception group (ex MOVI), at INRIA Grenoble, France, under the supervision of Prof. Peter Sturm and Prof. Radu Horaud and received the 2004 INPG PhD thesis prize. Together with my PhD student Vincent Gay-Bellile and my colleague Patrick Sayd, we received the best student paper award at CORESA'07. Since September 2006, I'm leading the ComSee research team (with Thierry Chateau until early 2009). My main research interests are in image registration and Structure-From-Motion for rigid and non-rigid scenarios, and machine learning, within the field of Computer Vision.

News

3DPVT'10 in Paris!

July, 2009
3DPVT'10 will be held in Paris in May'10!
Check out the conference website for more details.

Available Positions

PhD and postdoc in computer vision starting in fall 2009 - Contact me for more details

News Archive

March, 2009
Tutorial on Computer Vision in a Non-Rigid World @ ISR
This full day tutorial will be held in Lisbon on Apr. 20. This tutorial presents recent computer vision techniques to deal with the challenging scenario of the inference and registration of a non-rigid object shape from a set of images taken by a camera. This problem is nowadays of central interest in fields such as medical imaging analysis, video-surveillance and human motion modelling. [more]

May, 2008
Tutorial on Vision for Robotics @ IROS'08
This full day tutorial will be held in Nice on Sep. 22. We aim to give a survey of recent developments in computer vision for robotics applications... [more]

May, 2008
3DPVT'08 - Int'l Symposium on 3D Data Processing, Visualization and Transmission
This symposium was held in GeorgiaTech, Atlanta. See the website, including the online paper and video proceedings!

November 11, 2007
NORDIA'08 - Workshop on Non-Rigid Shape Analysis and Deformable Image Alignment
This workshop will be held in Conjunction with CVPR'08 in Anchorage, Alaska on June 27-28. Send your papers before March 15 through the website!

November 9, 2007
`Gestion des auto-occultations pour l'augmentation d'une surface déformable' receives the best student paper award at CORESA'07.

October, 2007
Tutorial at ISMAR'07: Computer Vision for AR: Rigid and Deformable Tracking using Markers and Scene Features
In this tutorial, we aim to give a survey of the most recent developments on visual tracking in Augmented Reality applications... [more]

October 6, 2006
DIRT - Direct Image Registration Toolkit - v1.1
Building on the dual inverse compositional algorithm we proposed, DIRT efficiently registers pairs of color or grey-level images by jointly computing a geometric and a photometric transformation... [more]

April, 2006
DEFORM'06 - Workshop on Image Registration in Deformable Environments
This workshop will be held at BMVC'06, Edinburgh, UK on the 8th of September 2006. Its aim is to bring together researchers from communities working on deformable surface registration: computer vision, medical imaging, augmented reality... [more]. See the on-line proceedings.

ORASIS'05

January, 2005
ORASIS'05 - Congrès francophone des jeune chercheurs en vision par ordinateur
ComSee organized the French conference for young researchers in Computer Vision close to Clermont-Ferrand in May 2006. See the on-line proceedings.

Some of my Papers (complete list)

Model Complexity Tuning
(applied to computer vision ; cross-validation, L-Tangent Norm, etc.)

Cross-validation for Linear Least Squares:

IJCV'09	On Computing the Prediction Sum of Squares Statistic in Linear Least Squares Problems with Multiple Parameter or Measurement Sets
JMIV'08	Maximizing the Predictivity of Smooth Deformable Image Warps Through Cross-Validation

Cross-validation for Nonlinear Least Squares:

ECCV'08

Efficient Camera Smoothing in Sequential Structure-from-Motion using Approximate Cross-Validation

The L-Tangent Norm criterion:

3DPVT'08

L-Tangent Norm: A Low Computational Cost Criterion for Choosing Regularization Weights and its Use for Range Surface Reconstruction

Deformable Surface Registration and Retexturing
(thin-plate splines, free-form deformations, etc.)

BMVC'09	NURBS Warps
PAMI'09	Direct Estimation of Non-Rigid Registrations with Image-Based Self-Occlusion Reasoning
BMVC'08	Contour-Based Registration and Retexturing of Cartoon-Like Videos
JMIV'08	Maximizing the Predictivity of Smooth Deformable Image Warps Through Cross-Validation
BMVC'07	Feature-Driven Direct Non-Rigid Image Registration
CVPR'07	Generalized Thin-Plate Spline Warps
BMVC'04	Direct Estimation of Non-Rigid Registrations
CVPR'04	Augmenting Images of Non-Rigid Scenes Using Point and Curve Correspondences

Deformable Structure-from-Motion and Augmentation
(low-rank shape model, paper surface, etc.)

NORDIA'08	Template-Based Paper Reconstruction from a Single Image is Well Posed when the Rulings are Parallel
BMVC'08	Monocular Template-Based Reconstruction of Inextensible Surfaces
CVPR'08	Coarse-to-Fine Low-Rank Structure-from-Motion
JMIV'08	Implicit Non-Rigid Structure-from-Motion with Priors
BenCOS'07	A Quasi-Minimal Model for Paper-Like Surfaces
CVIU'05	The Geometry of Dynamic Scenes - On Coplanar and Convergent Linear Motions Embedded in 3D Static Scenes
WDV'05	A Batch Algorithm For Implicit Non-Rigid Shape and Motion Recovery
WDV'05	Estimating the Pose of a 3D Sensor in a Non-Rigid Environment

Image Registration, Active Appearance Models
(inverse composition, light invariance, faces, etc.)

BMVC'08	Pools of AAMs: Towards Automatically Fitting Any Face Image
PAMI'08	Groupwise Geometric and Photometric Direct Image Registration
CVPR'08	Light-Invariant Fitting of Active Appearance Models
BMVC'07	Segmented AAMs Improve Person-Independent Face Fitting
SCIA'07	Shadow Resistant Direct Image Registration

3DIM'07

Joint Reconstruction and Registration of a Deformable Planar Surface Observed by a 3D Sensor

CAVW'04

Motion Panoramas

(Rigid) Structure-from-Motion for Points
(fundamental matrix, bundle adjustment, etc.)

ICCV'09	Is Dual Linear Self-Calibration Artificially Ambiguous?
BMVC'09	Algebraic Line Search for Bundle Adjustment
ECCV'08	Efficient Camera Smoothing in Sequential Structure-from-Motion using Approximate Cross-Validation
CVPR'07	Algorithms for Batch Matrix Factorization with Application to Structure-from-Motion
CVPR'07	On Constant Focal Length Self-Calibration From Multiple Views
IJCV'06	Affine Approximation for Direct Batch Recovery of Euclidean Motion From Sparse Data
EMM CVPR'05	Handling Missing Data in the Computation of 3D Affine Transformations
PAMI'04	Non-Linear Estimation of the Fundamental Matrix With Minimal Parameters

(Rigid) Structure-from-Motion for Lines
(triangulation, points-on-line, etc.)

IVC'07	Triangulation for Points on Lines
CVPR'07	Kinematics From Lines in a Single Rolling Shutter Image
CVIU'05	Structure-From-Motion Using Lines: Representation, Triangulation and Bundle Adjustment
ECCV'04	A Framework For Pencil-of-Points Structure-From-Motion
IJCV'04	The 3D Line Motion Matrix and Alignment of Line Reconstructions
CVPR'03	Motion From 3D Line Correspondences: Linear and Non-Linear Solutions

(Rigid) Structure-from-Motion for Planes
(piecewise planar scenes, segmentation, etc.)

CVIU'07	A Random Samping Strategy For Piecewise Planar Scene Segmentation
IJCV'03	Constrained Structure and Motion From Multiple Uncalibrated Views of a Piecewise Planar Scene

(Rigid) Structure-from-Motion for Curves
(triangulation, quality control, etc.)

WISP'07	Adaptive Evolution of 3D Curves for Quality Control
EMM CVPR'07	Energy-Based Reconstruction of 3D Curves for Quality Control
SCIA'07	Reconstruction of 3D Curves for Quality Control