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Authors: Gopal Datt Joshi and Jayanthi Sivaswamy

Affiliation: Center for Visual Information Technology, IIIT Hyderabad, India

Keyword(s): Contour detection, Surround suppression, Primary visual cortex, Human visual system.

Related Ontology Subjects/Areas/Topics: Computer Vision, Visualization and Computer Graphics ; Early Vision and Image Representation ; Image and Video Analysis

Abstract: We present a computationally simple and general purpose scheme for the detection of all salient object contours in real images. The scheme is inspired by the mechanism of surround influence that is exhibited in 80% of neurons in the primary visual cortex of primates. It is based on the observation that the local context of a contour significantly affects the global saliency of the contour. The proposed scheme consists of two steps: first find the edge response at all points in an image using gradient computation and in the second step modulate the edge response at a point by the response in its surround. In this paper, we present the results of implementing this scheme using a Sobel edge operator followed by a mask operation for the surround influence. The proposed scheme has been tested successfully on a large set of images. The performance of the proposed detector compares favourably both computationally and qualitatively, in comparison with another contour detector which is also b ased on surround influence. Hence, the proposed scheme can serve as a low cost preprocessing step for high level tasks such shape based recognition and image retrieval. (More)

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Paper citation in several formats:
Datt Joshi, G. and Sivaswamy, J. (2006). A SIMPLE SCHEME FOR CONTOUR DETECTION. In Proceedings of the First International Conference on Computer Vision Theory and Applications (VISIGRAPP 2006) - Volume 1: VISAPP; ISBN 972-8865-40-6; ISSN 2184-4321, SciTePress, pages 236-242. DOI: 10.5220/0001374702360242

@conference{visapp06,
author={Gopal {Datt Joshi}. and Jayanthi Sivaswamy.},
title={A SIMPLE SCHEME FOR CONTOUR DETECTION},
booktitle={Proceedings of the First International Conference on Computer Vision Theory and Applications (VISIGRAPP 2006) - Volume 1: VISAPP},
year={2006},
pages={236-242},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0001374702360242},
isbn={972-8865-40-6},
issn={2184-4321},
}

TY - CONF

JO - Proceedings of the First International Conference on Computer Vision Theory and Applications (VISIGRAPP 2006) - Volume 1: VISAPP
TI - A SIMPLE SCHEME FOR CONTOUR DETECTION
SN - 972-8865-40-6
IS - 2184-4321
AU - Datt Joshi, G.
AU - Sivaswamy, J.
PY - 2006
SP - 236
EP - 242
DO - 10.5220/0001374702360242
PB - SciTePress

- Science and Technology Publications, Lda.
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