A SIMPLE SCHEME FOR CONTOUR DETECTION

Gopal Datt Joshi, Jayanthi Sivaswamy

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 based 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.

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Paper Citation


in Harvard Style

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 - Volume 1: VISAPP, ISBN 972-8865-40-6, pages 236-242. DOI: 10.5220/0001374702360242


in Bibtex Style

@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 - Volume 1: VISAPP,},
year={2006},
pages={236-242},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0001374702360242},
isbn={972-8865-40-6},
}


in EndNote Style

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