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Ronan Boulic

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Publications associées (89)

Full-Body Avatar Control with Environment Awareness

Ronan Boulic, Daniel Thalmann, Manuel Peinado, Damien Maupu, Daniel Raunhardt

Interactive control of virtual characters through full-body movement requires accurately reproducing a performer's motion while accounting for surrounding obstacles. The authors' approach, based on a prioritized inverse kinematics solver, satisfies marker ...

Institute of Electrical and Electronics Engineers2009

Integrated Analytic and Linearized Inverse Kinematics for Precise Full Body Interactions

Ronan Boulic, Daniel Raunhardt

Despite the large success of games grounded on movement-based interactions the current state of full body motion capture technologies still prevents the exploitation of precise interactions with complex environments. This paper focuses on ensuring a precis ...

Springer2009

Improving the Believability of Virtual Characters Using Qualitative Gesture Analysis

Ronan Boulic, Manuel Peinado

This paper describes preliminary results of a research performed in the framework of the Enactive project (EU IST NoE Enactive). The aim of this research is to improve believability of a virtual character using qualitative analysis of gesture. Using techni ...

Springer-Verlag New York, Ms Ingrid Cunningham, 175 Fifth Ave, New York, Ny 10010 Usa2009

Estimating Hip Joint Contact Pressure from Geometric Features

Ronan Boulic, Daniel Thalmann, Ehsan Arbabi

Hip mechanical simulation for estimating pressures within the soft tissues during the loads and motions of daily activities is a common approach to investigate hip joint pathology. Many computational approaches estimate the pressure and contact pressures v ...

Springer-Verlag London Ltd, Sweetapple House Catteshall Rd Farncombe, Godalming Gu7 1Nh, Surrey, England2009

Motion constraint

Ronan Boulic, Daniel Raunhardt

In this paper, we propose a hybrid postural control approach taking advantage of data-driven and goal-oriented methods while overcoming their limitations. In particular, we take advantage of the latent space characterizing a given motion database. We intro ...

Springer Verlag2009

Evaluating the influence of induced passive torques in the simulation of time-varying human poses

Ronan Boulic

In the computerized generation of human poses, it is important to take into account not only the active component of the torque, but also the ligaments and connective tissues which produce a passive torque at the limits of the joint range of motion. We pre ...

2008

Relaxed Steering towards Oriented Region Goals

Ronan Boulic

This paper extends the funnelling behavior to offer a low-cost flexible guidance of mobile entities towards a circular region goal with the guarantee of enforcing an orientation within a predefined tolerance interval. The key requirements are the same as t ...

Springer-Verlag New York, Ms Ingrid Cunningham, 175 Fifth Ave, New York, Ny 10010 Usa2008

Real-Time Joint Coupling of the Spine for Inverse Kinematics

Ronan Boulic, Daniel Raunhardt

In this paper we propose a simple model for the coupling behavior of the human spine for an inverse kinematics framework. Our spine model exhibits anatomically correct motions of the vertebrae of virtual mannequins by coupling standard swing and revolute j ...

University of Applied Sciences Dusseldorf2008

Full-body performance animation with Sequential Inverse Kinematics

Ronan Boulic, Manuel Peinado

In this paper, we present an analytic-iterative Inverse Kinematics (IK) method, called Sequential lK (SIK), that reconstructs 3D human full-body movements in real time. The input data for the reconstruction is the least possible (i.e., the positions of wri ...

Elsevier2008

Progressive Clamping

Ronan Boulic, Daniel Raunhardt

2007

Efficient Collision Detection within Deforming Spherical Sliding Contact

Ronan Boulic, Daniel Thalmann, Anderson Maciel

2007

Interactive Low-Dimensional Human Motion Synthesis by Combining Motion Models and PIK

Ronan Boulic, Daniel Thalmann

This paper explores the issue of interactive low-dimensional human motion synthesis. We compare the performances of two motion models, i.e. Principal Components Analysis (PCA) or Probabilistic PCA (PPCA), for solving a constrained optimization problem with ...

2007

Exploiting Coupled Joints

Ronan Boulic, Daniel Raunhardt

2007

Simulating Reactive/Passive Postures by means of a Human Active Torque hybrid Optimization

Ronan Boulic

2007

A Fast Method for Finding Range of Motion in the Human Joints

Ronan Boulic, Daniel Thalmann, Ehsan Arbabi

Finding the range of motion for the human joints is a popular method for diagnosing joint diseases. By current technology, it is more trustable and easier to find the range of motion by employing computer based models of the human tissues. In this paper we ...

2007

Motion Pattern Preserving IK Operating in the Motion Principal Coefficients Space

Ronan Boulic, Daniel Thalmann

We introduce a constraint-based motion editing technique enforcing the intrinsic motion flow of a given motion pattern (e.g., golf swing). Its major characteristic is to operate in the motion Principal Coefficients (PCs) space instead of the pose PCs space ...

2007

Accurate On-line Avatar Control with Collision Anticipation

Ronan Boulic, Daniel Thalmann, Manuel Peinado, Damien Maupu, Daniel Raunhardt

Interactive control of a virtual character through full body movement has a wide range of applications. However, there is a need for systems that accurately reproduce the motion of a performer while accounting for surrounding obstacles. We propose an appro ...

Acm Order Department, P O Box 64145, Baltimore, Md 21264 Usa2007

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

Evaluation of on-line analytic and numeric inverse kinematics approaches driven by partial vision input

Ronan Boulic, Manuel Peinado

Springer-Verlag2006

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

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