Benzi, Marco

Caugant, Ilian

Cessac, Bruno

Kartsaki, Evgenia

Karvouniari, Dora

Kornprobst, Pierre

Souihel, Selma

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Biovision project-team: Biological vision: integrative models and vision aid systems for visually impaired people

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HAL Id: hal-01896505https://hal.inria.fr/hal-01896505Submitted on 16 Oct 2018HAL is a multi-disciplinary open accessarchive for the deposit and dissemination of sci-entific research documents, whether they are pub-lished or not. The documents may come fromteaching and research institutions in France orabroad, or from public or private research centers.L’archive ouverte pluridisciplinaire HAL, estdestinée au dépôt et à la diffusion de documentsscientifiques de niveau recherche, publiés ou non,émanant des établissements d’enseignement et derecherche français ou étrangers, des laboratoirespublics ou privés.Biovision project-teamBruno Cessac, Pierre Kornprobst, Marco Benzi, Ilian Caugant, DoraKarvouniari, Evgenia Kartsaki, Selma SouihelTo cite this version:Bruno Cessac, Pierre Kornprobst, Marco Benzi, Ilian Caugant, Dora Karvouniari, et al.. Biovisionproject-team: Biological vision: integrative models and vision aid systems for visually impaired people.Fête de la science, Oct 2018, Sophia-Antipolis, France. ￿hal-01896505￿Biovision project-teamTeam leader: Bruno Cessac, Inria Senior Scientist Project website: https://team.inria.fr/biovision Contact us: biovision-info@inria.frNeuroscientists• Institut des Neurosciences de la Timone, Marseille• Laboratoire de Psychologie Cognitive, Marseille• University of Valparaiso, Chile• University of Newcastle, UKOutput: neural codeInput: lightRetinaVisual CortexVisual sceneNormal perceptionRetina pathologiesAge-macular degenerationDiabetic Retinopathy SimulationThe visual systemPhysicians• CHU Pasteur 2, Service d’ophtalmologie, Nice • Institut de la Vision, ParisBiological vision: integrative models and vision aid systems for visually impaired peopleTheoreticians, modelers, computer scientists • Institut de Physique de Nice• Laboratoire J.A. Dieudonné, Nice • CIMFAV, AC3E Valparaiso, Chile • University of Genoa, ItalyMain partnersPerception with pathologiesRetinitis pigmentosaLimit cycles and Homoclinic OrbitIext (pA)NV (mV)1HopfSaddle - NodeHomoclinicNeutralSaddle*0-60-10250Limit cycles and Homoclinic OrbitIext (pA)NV (mV)1HopfSaddle - NodeHomoclinicNeutralSaddle*0-60-10250Main goals:• Model and simulate normal and degenerated retinas• Understanding how retina encodes motion (detection, anticipation)• Contribute new therapeutic strategiesCoord.: Bruno CessacMethodologies: Biophysical modelling, dynamical systems theory, statistical physics, mean field, neural fields, computer simulations, …Experiments about retinal waves (Courtesy E. Sernagor)Research Axis 1Modelling and understanding the early visual system in normal and pathological conditionsBiophysical modelling of the visual systemMathematical analysis• Retina during development, retinal waves (Dora Karvouniari PhD)• Motion anticipation in the retina and beyond (Selma Souihel PhD)Bipolar response Ganglion response• Impact of retinal cells silencing on vision (Jenny Kartsaki PhD)Limit cycles and homoclinic orbitBifurcation analysisEye movementsMain goals:• Study low vision pathologies at behavioral level• Design vision aid systems targeting main low vision needs• Design patient specific low vision simulators Coord.: Pierre KornprobstMethodologies: Computer vision, virtual and augmented reality, partial differential equations, dynamical systems, neural fields, …Research Axis 2Unveiling fundamental mechanisms of low vision perception to leverage cross realityNext area of interestReading aid system using virtual realityModelling oculomotor strategiesVision aid systems using augmented reality(Marco Benzi and Iliann Caugant)Reading speed:30 words/minReading speed:60 words/min• Face recognition and enhancement (Josselin Gautier)Gaze-contingent enhancementSequence of fixations

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Biovision project-team: Biological vision: integrative models and vision aid systems for visually impaired people

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