Projects

 

Oculus Rift Dk2

The Oculus Rift Development Kit 2 is an up-to-date (2014), cheap head mounted display offering with a unique OLED 1920 x 1080 px display refresh at 90 Hz a low-cost immersion with a light equipment (< 400g).  The 3-axis gyroscope, the accelerometer and the magnetometer embedded into the helmet coupled with the external infrared camera allow a fast enslavement of the visual scene to the helmet movements.

 

 

NVIS nVisor SX111

 

The nVisor SX111 is a head-mounted display offering users a truly immersive display with a total viewing real estate covering 102° horizontal by 64° vertical, with 111 degrees across the diagonal. The LCOS displays offer a 1280x1024 px resolution for each eye with a contrast >100:1. The head mounted display is connected to an electronic controller unit (that can be supplied with battery and become thus portative) via a cable. The nVisor SX111 uses a only one microdisplay per eye and can be driven from a single PC source supporting dual DVI or analog video output. Our SX111 is equiped with a viewpoint Binocular EyeTracker. 

 

 

 


Barco AS3D F35

The Barco AS3D F35 is a videoprojector offering a 1920  x  1200  pixels resolution and a refresh rate up to 120 Hz  in mono  or in active 3D stereoscopic.  The F35  AS3D  use the Dual­Link  DVI  technology for imagery with a 330 MHz bandpass. Our videoprojector is equiped with a 3D module for 3D stereoscopic rendering and Volfoni active stereo glasses. We also complementarily use two large projection screens (3.75 x 2.81 m et 2.5 x 3.2 m).  

 

   Ascension Technology Flock of Bird

The electromagnetic system Flock of Bird allows to measure up to 144 Hz the 6 dof of movement of an object or a body part with a wired sensor receiving the electromagnetic impulsions of a fixed emmiter. The system can be modulated and several controller units and sensors can be plugged in a swarm running with a unique emmiter. Despite its age (1992) I often use this system for enslaving my virtual environments.

   

 

Codamotion CX1   

The opto-electronic system CX1 codamotion allows the 3D measurement of movement up to 4.5 m far from the Cx1 scanner unit with active markers. The system can monitor 12 markers with an acquisition frequency of 400 Hz. Four wired markers (> 0.5 m) can be plugged on a marker drive box that contains a battery. I also use clusters of four markers, integrated into an ABS box to monitor the movements of a body part for instance. i use a system of two CX1 scanner connected to a F-Type minihub in order to maximize the marker's visibility in the sensing space. I use the Codamotion system to enslave my virtual envirponment in real time to operator's movements.

  Codamotion CX1

 


Focuses

My research field of interest is concerned with three facets of movement production : Perceptual-motor learning, Action selection and action regulation. I'm especially interested by the role of visual information's on movement. I'm thus studying what kind of optical information is used, how is the moment enslaved to optics, and so on. I'm a fan of the direct perception theory (Gibson, 1979) and adress depending on the projects that are described on opposite the Direct Learning theory (Jacobs & Michaels, 2007), the Law of Control framework (Warren, 1988) and the Affordance Theory (Gibson, 1977).

Approach

My approach consist in studying operational or short-term (i.e.,< 59 sec.) decision making and/or perceptual-motor regulation in a wide variety of tasks. I'm thus applying visual psychophysics to different category of movement : sport, transport and skills. Such an approach allows to observe the existence of common principles of movement regulation and information across situations, context and/or effectors. This always force me to determine for each task the set of control variables and pieces of informations available and to test their mutual relationship depending on the expertise of operators. 

Methodologies

My methodologies involve indoor data capture (electromagnetic 6 DoF devices, Goniometers, Inclinometers, Vicon, CodaMotion, Captiv), outdoor data capture (Vxlog225, Garmin Oregon 450, Garmin Etrex), real-time data monotoring (Ad-Win Keithley), some custom made electronics and sensors (Potentiometers, FSR), visual rendering and Virtual reality (Imagine, Create & Experiment (ICE) software), data processing (Matlab, VBA). Please look at some representative equipments I'm currently using. The picture bellow will allows you to get an overview (and the slideshow at right specific examples) of how I can mix input and output devices in order to get a complete virtual reality setup for a given task.

My possibilities of mixed Input, rendering and informatics devices for virtual reality use

Tasks & Projects

The screenshots below are linked to the specific pages of my different projects. All paradigms are currently running.

Subcategories