Publications de Benoît Le Callennec

Artist-Oriented 3D Character Posing from 2D Strokes

Ronan Boulic, Benoît Le Callennec, Mentar Mahmudi, Pawan Kumar Harish

In this paper we present an intuitive tool suitable for 2D artists using touch-enabled pen tablets. An artist-oriented tool should be easy-to-use, real-time, versatile, and locally refinable. Our approach uses an interactive system for 3D character posing ...

Elsevier2016

Parallel Inverse Kinematics for Multithreaded Architectures

Ronan Boulic, Benoît Le Callennec, Mentar Mahmudi, Pawan Kumar Harish

In this article, we present a parallel prioritized Jacobian-based inverse kinematics algorithm for multithreaded architectures. We solve damped least squares inverse kinematics using a parallel line search by identifying and sampling critical input paramet ...

Association for Computing Machinery2016

Automatic measurement of key ski jumping phases and temporal events with a wearable system

Kamiar Aminian, Julien Favre, Benoît Le Callennec, Julien Chardonnens

We propose a new method, based on inertial sensors, to automatically measure at high frequency the durations of the main phases of ski jumping (i.e. take-off release, take-off, and early flight). The kinematics of the ski jumping movement were recorded by ...

Taylor & Francis2012

Estimation of temporal parameters in ski jumps using wearable sensors

Kamiar Aminian, Benoît Le Callennec, Julien Chardonnens

2009

Bi-planar 2D-to-3D Registration in Fourier Domain for Stereoscopic X-Ray Motion Tracking

Kamiar Aminian, Jean-Philippe Thiran, Meritxell Bach Cuadra, Dominique Zosso, Benoît Le Callennec

In this paper we present a new method to track bone movements in stereoscopic X-ray image series of the knee joint. The method is based on two different X-ray image sets: a rotational series of acquisitions of the still subject knee that will allow the tom ...

2008

Automatic Detection of Key Events During the Takeoff Phase of Ski Jumps Using Body Fixed Sensors

Kamiar Aminian, Benoît Le Callennec

2008

Robust Kinematic Constraint Detection for Motion Data

Ronan Boulic, Benoît Le Callennec

Motion capture data is now widely available to create realistic character animation. However, it is difficult to reuse without any additional information. For this reason, annotating motion data with kinematic constraints is a clever step to ease further o ...

2006

Interactive motion deformation with prioritized constraints

Ronan Boulic, Benoît Le Callennec

In this paper, we present an interactive motion deformation method to modify animations so that they satisfy a set of prioritized constraints. Our approach successfully handles the problem of retargeting and adjusting a motion, as well as adding significan ...

Academic Press2006

Interactive techniques for motion deformation of articulated figures using prioritized constraints

Benoît Le Callennec

Convincingly animating virtual humans has become of great interest in many fields since recent years. In computer games for example, virtual humans often are the main characters. Failing to realistically animate them may wreck all previous efforts made to ...

EPFL2006

An Intuitive IK Postural Control System for Anthropometric Digital Human Models

Ronan Boulic, Daniel Thalmann, Benoît Le Callennec

2005

Progressive Cartesian Inequality Constraints for the Inverse Kinematics Control of Articulated Chains

Ronan Boulic, Benoît Le Callennec, Manuel Peinado

2005

Challenges in exploiting prioritized inverse kinematics for motion capture and postural control

Ronan Boulic, Benoît Le Callennec, Manuel Peinado

In this paper we explore the potential of prioritized inverse kinematics for motion capture and postural control. We have two goals in mind: reducing the number of sensors to improve the usability of such systems, and allowing interactions with the environ ...

2005