caa a22 4500 463245016 CHVBK 20180405153323.0 cr unu---uuuuu 170326e20071201xx s 000 0 eng 10.1007/s00422-007-0182-0 doi (NATIONALLICENCE)springer-10.1007/s00422-007-0182-0 Motion detection, noise reduction, texture suppression, and contour enhancement by spatiotemporal Gabor filters with surround inhibition [Elektronische Daten] [Nicolai Petkov, Easwar Subramanian] We study the orientation and speed tuning properties of spatiotemporal three-dimensional (3D) Gabor and motion energy filters as models of time-dependent receptive fields of simple and complex cells in the primary visual cortex (V1). We augment the motion energy operator with surround suppression to model the inhibitory effect of stimuli outside the classical receptive field. We show that spatiotemporal integration and surround suppression lead to substantial noise reduction. We propose an effective and straightforward motion detection computation that uses the population code of a set of motion energy filters tuned to different velocities. We also show that surround inhibition leads to suppression of texture and thus improves the visibility of object contours and facilitates figure/ground segregation and the detection and recognition of objects. Springer-Verlag, 2007 V1 nationallicence Gabor filter nationallicence Receptive field nationallicence Simple cell nationallicence Complex cell nationallicence Motion energy nationallicence Spatiotemporal integration nationallicence Surround suppression nationallicence Contour detection nationallicence Texture suppression nationallicence Noise reduction nationallicence Motion detection nationallicence Figure/ground segregation nationallicence Petkov Nicolai Institute of Mathematics and Computing Science, University of Groningen, P. O. Box 407, 9700 AK, Groningen, The Netherlands aut Subramanian Easwar Institute of Mathematics and Computing Science, University of Groningen, P. O. Box 407, 9700 AK, Groningen, The Netherlands aut Biological Cybernetics Springer-Verlag 97/5-6(2007-12-01), 423-439 0340-1200 97:5-6<423 2007 97 422 https://doi.org/10.1007/s00422-007-0182-0 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00422-007-0182-0 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Petkov Nicolai Institute of Mathematics and Computing Science, University of Groningen, P. O. Box 407, 9700 AK, Groningen, The Netherlands aut NATIONALLICENCE 700 1- Subramanian Easwar Institute of Mathematics and Computing Science, University of Groningen, P. O. Box 407, 9700 AK, Groningen, The Netherlands aut NATIONALLICENCE 773 0- Biological Cybernetics Springer-Verlag 97/5-6(2007-12-01), 423-439 0340-1200 97:5-6<423 2007 97 422 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer