| Active perception and exploration of objects
Members of team
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Team leader |
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Dr Jacques Droulez |
DR2 CNRS |
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Researchers |
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Dr Manuel Vidal |
CR2 CNRS |
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Phd Students |
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Christian Boucheny |
Doctorant |
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Simon Capern |
Doctorant |
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Audrey Houillon |
Doctorante -BACS |
Former PhD students and post-doctoral fellows
Overview
We are interested in perception of the three-dimensional objects, and more specifically in the way in which the brain amalgamates a whole of sensorimotor information to work out a coherent representation of the objects and their geometrical properties. Our working hypothesis is that perception, in particular visual perception, cannot be studied separately: it is guided or modified by the action of the subject. This fact we study also certain aspects of the engine control and the planning of the action, insofar as these studies can inform us about the relevant representations that the brain must work out starting from sensorimotor information. On the methodological level, our research associates psychophysical experiments, an exploration of the cerebral activity by the techniques of functional imagery and a work of modeling undertaken in collaboration or dialogue with laboratories of robotics.
Themes
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I. Exploration by the glance and perception of objects
(M.Wexler, J. Droulez, C. Morvan, C. Devisme, A. Tuscher, M. Vallet , C. Boucheny ) |
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1.1.
The stability 3D of the world at the time of the ocular movements
1.2.
The detection of movement and the own movement
1.3.
Displacement of the glance according to the perceptive grouping and/or the detected attribute
1.4.
Visual focusing of complex three-dimensional scenes
1.5.
Reference deictic and space reference |
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II.
Study of the driving preparation and haptic exploration
(J. Droulez, M. Wexler) |
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2.1.
The manual action and the perception of the form
2.2.
Space reference frames of the haptic representations
2.3.
Influence task on the cortical representation of an object 3D: perception with driving anticipation |
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III.
Contribution of the movements of the head to the perception of the objects
(M. Wexler, J. Droulez, C. Morvan, C. Boucheny) |
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3.1.
Active and strategic exploration of the objects 3D
3.2.
Modeling of the scenes 3D |
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IV. Probabilistic modeling
(J. Droulez, J. Laurens, L. Foubert, S.Capern) |
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4.1.
Neuronal activity and probability
4.2.
Model bayésien of the fusion of information
4.3.
Probabilistic model of the selection and the programming of actions |
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Rebuilding 3D
of a parietal element with Lascaux
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Robot of project BIBA
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The local variations speed in the image generate the perception of a three-dimensional form. The perceived form corresponds to a minimum of variation of distance 3D between the points (assumption of rigidity of the object). There are often several equivalent solutions from where alternation between percepts stable
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Collaborations
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Harvard University |
- L. Garnero, J. Lorenceau, AL. Paradis
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LENA UPR640 CNRS Paris |
- Denis Lebihan , Jean-Baptiste Poline
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SHFJ Orsay |
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INRIA Odyssée |
- P. Bessière , S.P. Denève, P. Dayan , JJ. Slotine , R. Siegwart
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Programme européen BACS |
- Pierre Jacob , Joelle Proust ,
Jérôme Dokic
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Institut Jean Nicod |
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Technocentre Renault |
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Laboratoire de Neurosciences Fonctionnelles et Pathologies |
- Cheong Loong Fah, Paul Chew,
M. Ang
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National University of Singapore |
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Laboratoire de Neurophysique et Physiologie du Système Moteur |
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EDF Division Recherche et Développement : |
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UFR de mathématiques de Paris 7 |
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Institut Max Planck de Cybernétique Biologique de Tübingen |
Parteners
Selected articles
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Cornilleau-Pérès, V., Wexler, M., Droulez, J., Marin, E., Miège, C. & Bourdoncle, B. (2002) Visual perception of planar orientation : dominance of static depth cues over motion cues. Vision Research, 42(11) : 1403-1412.
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Droulez, J. & Bennequin, D. (2005) Perception des symétries et invariance perceptive. In : Symétries : symétries et asymétries du vivant (M. Siksou, ed.) Hermès Science, chapitre 8, p. 155-172.
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Hanneton, S., Berthoz, A., Droulez, J., and Slotine, J. J. E. Does the brain compute composite variables for the control of movement? Biol. Cybern., 77: 381-393 (1997).
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Lamouret, I. , Cornilleau-Pérès, V. Droulez, J. (2001) Lines and dots: characteristics of the motion integration process. Vision Research. 41: 2207-2221
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McIntyre J., Stratta, F., Droulez, J. and Lacquaniti, F. (2000) Analysis of pointing erroors reveals properties of data representations and coordinate transformations within the central nervous system. Neural Computation 12: 2826-2855..
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Morvan, C. & Wexler, M. (2005) Reference frames in early motion detection. Journal of Vision, 5, 131-138.
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Panerai F, Cornilleau-Pérès V, and Droulez J (2002) Contribution of extra-retinal signals to the scaling of object distance during self-motion. Perception & Psychophysics, 64(5): 717-731.
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Paradis, A.L., Cornilleau-Peres, V., Droulez, J., Lobel, E., van de Moortele, P.F., Berthoz, A., Le Bihan, D. (2000) The visual perception of motion and 3D structure from motion : a fMRI study. Cerebral Cortex, 10 : 772-783.
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Peh CH, Panerai F, Droulez J, Cornilleau-Peres V, and Cheong LF (2002) Absolute distance perception during in-depth head movement: calibrating optic flow with extra-retinal information. Vision Research, 42, 1991-2003.
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Reymond G., Droulez J., and Kemeny, A. (2002) Visuovestibular perception of self-motion modeled as a dynamic optimization process. Biological Cybernetics, 87-4 : 301-314.
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Wexler, M., Panerai, F., Lamouret, I. & Droulez, J. (2001) Self-motion and the perception of stationary objects. Nature, 409, 85-88.
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Wexler, M. (2005) Anticipating the three-dimensional consequences of eye movements. PNAS, 102 : 1246-1251.
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Wexler, M & van Boxtel, JJA (2005). Depth perception by the active observer. Trends in Cognitive Sciences, 9, 431-438.
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