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Ronan Boulic

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Publications associées (89)

One the effect of the Vertical Axis Alignment on Cybersickness and Game Experience in Supine Posture

Ronan Boulic, Nana Tian, Louis Philippe Simoes Lopes

Cybersickness is still an inevitable adverse effect when using VR systems, resulting in different levels of discomfort, and potentially breaking the immersive experience. To date, few studies have focused on exploring VR experience in the supine posture. R ...

IEEE2020

Eye Thought You Were Sick! Exploring Eye Behaviors for Cybersickness Detection in VR

Ronan Boulic, Nana Tian

Cybersickness induced through Virtual Reality (VR) applications is still one of its main barriers as it can induce unwanted side-effects in players, significantly hindering the overall experience. Despite the wealth of research available on this topic, it ...

ACM2020

Does scaling player size skew one’s ability to correctly evaluate object sizes in a virtual environment?

Ronan Boulic, Bruno Herbelin, Mathias Guy Delahaye

This paper presents the results of a study performed in order to evaluate whether a navigation technique, based on scaling the user’s avatar, impacts the user’s ability to correctly assess the size of virtual objects in a virtual environment. This study wa ...

Association for Computing Machinery2020

Towards Designing Games for Experimental Protocols Investigating Human-Based Phenomena

Ronan Boulic

Over the past few years scientific research has opened up to the idea of using digital games for human-based studies. Fields such as Neuroscience, Medical and Affective Computing are currently using games to study human-based phenomena. Even though a vast ...

2020

Exploring Blink-Rate Behaviors for Cybersickness Detection in VR

Ronan Boulic, Nana Tian

Cybersickness continues to be one of the main barriers for mainstream adoption of Virtual Reality (VR). Despite the wealth of research available on this topic, it is still an unsolved problem. This paper explores the potential influence of cybersickness ov ...

IEEE2020

Reconciling Being in-Control vs. Being Helped for the Execution of Complex Movements in VR

Ronan Boulic, Bruno Herbelin, Thibault Serge Mario Porssut

Performing motor tasks in virtual environments is best achieved with motion capture and animation of a 3D character that participants control in real time and perceive as being their avatar in the virtual environment. A strong Sense of Embodiment (SoE) for ...

IEEE2019

On the Influence of the Supine Posture on Simulation Sickness in Virtual Reality

Ronan Boulic

Virtual Reality (VR) has the capability of fully immersing users into a wide variety of gaming experiences where the sole focus of the user is on that experience itself. One problem that often occurs when it comes to VR experiences is that of simulation si ...

2019

A Too to Design Interactive Characters Based on Embodied Cognition

Ronan Boulic, Joan Llobera Mahy

Creating interactive characters is one of the most challenging tasks of videogame design. In order to facilitate such an endeavor, we introduce a decisional and behavior synthesis architecture integrated in the game engine Unity3D. A distinguishing feature ...

IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC2019

Real-time neural network prediction for handling two-hands mutual occlusions

Ronan Boulic, Bruno Herbelin, Thibault Serge Mario Porssut, Mathias Guy Delahaye

Hands deserve particular attention in virtual reality (VR) applications because they represent our primary means for interacting with the environment. Although marker-based motion capture works adequately for full body tracking, it is less reliable for sma ...

2019

The Critical Role of Self-Contact for Embodiment in Virtual Reality

Ronan Boulic, Bruno Herbelin, Eray Molla, Sidney Bovet, Henrique Galvan Debarba

With the broad range of motion capture devices available on the market, it is now commonplace to directly control the limb movement of an avatar during immersion in a virtual environment. Here, we study how the subjective experience of embodying a full-bod ...

2018

Self-attribution of distorted reaching movements in immersive virtual reality

Ronan Boulic, Bruno Herbelin, Olaf Blanke, Roy Salomon, Henrique Galvan Debarba

This study explores the extent to which individuals embodied in Virtual Reality tend to self-attribute the movements of their avatar. More specifically, we tested subjects performing goal-directed movements and distorted the mapping between user and avatar ...

2018

Egocentric Mapping of Body Surface Constraints

Ronan Boulic, Eray Molla, Henrique Galvan Debarba

The relative location of human body parts often materializes the semantics of on-going actions, intentions and even emotions expressed, or performed, by a human being. However, traditional methods of performance animation fail to correctly and automaticall ...

2018

Characterizing first and third person viewpoints and their alternation for embodied interaction in virtual reality

Ronan Boulic, Bruno Herbelin, Olaf Blanke, Roy Salomon, Sidney Bovet, Henrique Galvan Debarba

Empirical research on the bodily self has shown that the body representation is malleable, and prone to manipulation when conflicting sensory stimuli are presented. Using Virtual Reality (VR) we assessed the effects of manipulating multisensory feedback (f ...

Public Library of Science2017

Virtual Zero Gravity Impact on Internal Gravity Model

Ronan Boulic, Bruno Herbelin, Elisa Canzoneri

This project investigates the impact of a virtual zero gravity experience on the human gravity model. In the planned experiment, subjects are immersed with HMD and full body motion capture in a virtual world exhibiting either normal gravity or the apparent ...

Ieee Computer Soc2017

Evaluating the Sensitivity to Virtual Characters Facial Asymmetry in Emotion Synthesis

Ronan Boulic, Junghyun Ahn, Nan Wang

The use of expressive Virtual Characters is an effective complementary means of communication for social networks offering multi-user 3D-chatting environment. In such context the facial expression channel offers a rich medium to translate the on-going emot ...

Taylor & Francis2017

SPA: Sparse Photorealistic Animation Using a Single RGB-D Camera

Ronan Boulic, Eray Molla, Jingyu Yang, Kun Li

Photorealistic animation is a desirable technique for computer games and movie production. We propose a new method to synthesize plausible videos of human actors with new motions using a single cheap RGB-D camera. A small database is captured in a usual of ...

Ieee-Inst Electrical Electronics Engineers Inc2017

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

One Step from the Locomotion to the Stepping Pattern

Ronan Boulic, Eray Molla, Utku Evci

The locomotion pattern is characterized by a translation displacement mostly occurring along the forward frontal body direction, whereas local repositioning with large re-orientations, i.e. stepping, may induce translations both along the frontal and the l ...

ACM Press2016

Embodied interaction using non-planar projections in immersive virtual reality

Ronan Boulic, Bruno Herbelin, Sami Perrin, Henrique Galvan Debarba

In this paper we evaluate the use of non-planar projections as a means to increase the Field of View (FoV) in embodied Virtual Reality (VR). Our main goal is to bring the virtual body into the user’s FoV and to understand how this affects the virtual body/ ...

ACM Press2015

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