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Stereo-Disparity Estimation Using a Supervised Neural Network

Venkatesh, YV and Venkatesh, BS and Kumar, Jaya A (2004) Stereo-Disparity Estimation Using a Supervised Neural Network. In: 2004 14th IEEE Signal Processing Society Workshop on Machine Learning for Signal Processing, 29 Sept-1 Oct, Sao Luis,Brazil, 785- 793.


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We deal with the problem of determining disparity in graylevel stereoimage-pairs, by treating it as a nonlinear classification problem, and invoking Marr and Poggio's 111 neighborhood criterion. To this end, we propose the application of an artificial neural network (ANN). The main contribution of the paper is believed t o be the use of neurons which are trained to be disparity selective, and thereby dispensing with the standard assumptions made about the neighborhood. The disparity estimates so obtained for random-dot and natural stereoimage-pairs are comparable to those found in the literature. Whereas Khotanzad et al. [3] used a multi-layer perceptron (MLP) in order to learn the constraints of a cooperative stereo algorithm for binary. random-dot stereograms, we employ a single layer ANN. Further, in our scheme, the ANN weights adapt themselves to the neighborhood, and are able to learn the constraints successfully.

Item Type: Conference Paper
Publisher: IEEE
Additional Information: copyright 2004 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.
Department/Centre: Division of Electrical Sciences > Electrical Engineering
Date Deposited: 22 Aug 2008
Last Modified: 19 Sep 2010 04:35
URI: http://eprints.iisc.ac.in/id/eprint/9865

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