NDLI: A computational model of neural contour processing: Figure-ground segregation and illusory contours

Content Provider	IEEE Xplore Digital Library
Author	Heitger, F. von der Heydt, R.
Copyright Year	1993
Description	Author affiliation: Commun. Technol. Lab., Swiss Federal Inst. of Technol. ETH, Zurich, Switzerland (Heitger, F.)
Abstract	The detection of occluding contours in images of 3-D scenes is a fundamental problem of vision. The authors present a computational model of contour processing that was suggested by neurophysiological recordings from the monkey visual cortex. The model uses convolutions and nonlinear operations, but no feedback loops. Contours are defined by the local maxima of the responses of a contour operator that sums a representation of contrast borders and a grouping signal. The grouping consists of convolving a representation of key-points, such as T-junctions, corners, and line ends, with a set of orientation selective kernels, and a nonlinear pairing operation. The grouping scheme is selective based on whether the configuration of key-points is consistent with the interpretation of occlusion. The resulting contour representation includes an indicator of figure-ground direction. It is shown that the model reproduces illusory contours in accurate agreement with perception and generates representations of occluding contours on images of natural scenes that are more complete and less cluttered by spurious connections of foreground and background than those obtained by conventional edge detection operators.<>
Starting Page	32
Ending Page	40
File Size	893183
Page Count	9
File Format	PDF
ISBN	0818638702
DOI	10.1109/ICCV.1993.378238
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1993-05-11
Publisher Place	Germany
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Computational modeling Layout Brain modeling Feedback loop Image edge detection Communications technology Laboratories Nervous system Hospitals Kernel
Content Type	Text
Resource Type	Article

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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