Biological model of motion integration and segmentation based on form cuesReport as inadecuate




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* Corresponding author 1 ODYSSEE - Computer and biological vision DI-ENS - Département d-informatique de l-École normale supérieure, CRISAM - Inria Sophia Antipolis - Méditerranée , ENS Paris - École normale supérieure - Paris, Inria Paris-Rocquencourt, ENPC - École des Ponts ParisTech 2 INCM - Institut de neurosciences cognitives de la méditerranée - UMR 6193

Abstract : Active vision is an essential part of every biological organism possessing an eye system: posture, eye movements, visual research,

. All require a motion percept to operate. At the basis of active vision lays the ability to calculate movements of objects in the scene, at least on a sufficient level to react correctly. In this report we present a model of motion integration and segmentation in the first visual cortex areas. Specifically we modeled the first two cortex areas involved in motion processing in the primate: V1 and MT. To be able to process motion correctly a visual system also need to deal with form information. We investigate how form cues coming from the ventral pathway can be used by the V1-MT dorsal pathway to solve some perception problems. By using a recurrent dynamical system between the V1 and MT layers we are able to find out psychophysical results such as motion integration and center-surround effects due to the feedback connections, or end-of-line and 2D features detectors thanks to the shunting inhibition. We propose to modulate this system by a form information coming from the ventral stream and are thus able to explain asymmetric center-surround effects as well as motion segmentation and segregation between extrinsic and intrinsic junctions.

Keywords : motion estimation optical flow bio-inspired vision MT area feedbacks center-surround integration shunting inhibition





Author: Émilien Tlapale - Guillaume Masson - Pierre Kornprobst -

Source: https://hal.archives-ouvertes.fr/



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