Publications de Ronan Boulic | EPFL Graph Search

An embodied body morphology task for investigating self-avatar proportions perception in Virtual Reality

Ronan Boulic, Bruno Herbelin, Loën Boban

The perception of one's own body is subject to systematic distortions and can be influenced by exposure to visual stimuli showing distorted bodies. In Virtual Reality (VR), echoing such body judgment inaccuracies, avatars with strong appearance dissimilari ...

2025

Customizing the human-avatar mapping based on EEG error related potentials during avatar-based interaction

Olaf Blanke, José del Rocio Millán Ruiz, Ronan Boulic, Bruno Herbelin, Ricardo Andres Chavarriaga Lozano, Fumiaki Iwane, Thibault Serge Mario Porssut

Objective. A key challenge of virtual reality (VR) applications is to maintain a reliable human-avatar mapping. Users may lose the sense of controlling (sense of agency), owning (sense of body ownership), or being located (sense of self-location) inside th ...

2024

Comparison of XR Game Controller Trigger Input Versus Isometric Thumb and Index Finger Pressure Input on a Stylus

Ronan Boulic, Adriano Viegas Milani

Pressure sensitive inputs are an important feature for many XR design and creativity applications. This is typically accomplished using the trigger input on the default platform 6DoF controller. This paper reports the findings of a pilot user study that co ...

Institute of Electrical and Electronics Engineers Inc.2024

Comparison of Mouse, 6DoF Controller and Pen Interactions on a Glasses-Free 3D Display

Ronan Boulic, Adriano Viegas Milani

3D displays are becoming available to mainstream consumers, offering the ability to view and interact with 3D content without wearing AR/VR glasses. This paper reports the findings of a user study that compares the performance of a range of different input ...

Institute of Electrical and Electronics Engineers Inc.2024

The Least Increasing Aversion (LIA) Protocol: Illustration on Identifying Individual Susceptibility to Cybersickness Triggers

Ronan Boulic, Nana Tian

This paper introduces the Least Increase aversion (LIA) protocol to investigate the relative impact of factors that may trigger cybersickness. The protocol is inspired by the Subjective Matching methodology (SMT) from which it borrows the incremental const ...

2024

In case of doubt, one follows one's self: the implicit guidance of the embodied self-avatar

Ronan Boulic, Bruno Herbelin, Loën Boban

The sense of embodiment in virtual reality (VR) is commonly understood as the subjective experience that one's physical body is substituted by a virtual counterpart, and is typically achieved when the avatar's body, seen from a first-person view, moves lik ...

2024

Who says you are so sick? An investigation on individual susceptibility to cybersickness triggers using EEG, EGG and ECG

Ronan Boulic, Nana Tian

In this research paper, we conducted a study to investigate the connection between three objective measures: Electrocardiogram(ECG), Electrogastrogram (EGG), and Electroencephalogram (EEG), and individuals' susceptibility to cybersickness. Our primary obje ...

2024

User study of omnidirectional treadmill control algorithms in VR

Ronan Boulic, Mathias Guy Delahaye

We conducted a comparative user study of the Infinadeck [1] omnidirectional treadmill native control algorithm alongside an approach based on a state observer control scheme combining a kinematic model with error dynamics that allows users to change their ...

IEEE COMPUTER SOC2023

Real-time Self-contact Retargeting of Avatars down to Finger Level

Ronan Boulic, Bruno Herbelin, Mathias Guy Delahaye

We interact with the world through a body that includes hands and fingers. Likewise, providing an avatar allowing the control of a virtual body with fingers is an important step to improve the user experience in VR. When the user and their avatar skeleton ...

The Eurographics Association2023

Avatar error in your favor: Embodied avatars can fix users’ mistakes without them noticing

Olaf Blanke, Ronan Boulic, Bruno Herbelin, Mathias Guy Delahaye

In immersive Virtual Reality (VR), users can experience the subjective feeling of embodiment for the avatar representing them in a virtual world. This is known to be strongly supported by a high Sense of Agency (SoA) for the movements of the avatar that fo ...

2023