Infrared Thermal Sensing of Positive and Negative Affective States

Khan, M.M., Ingleby, Michael and Ward, Robert D. (2006) Infrared Thermal Sensing of Positive and Negative Affective States. In: 2006 IEEE Conference on Robotics, Automation and Mechatronics. IEEE, pp. 1-6. ISBN 1-4244-0025-2

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Abstract

Useful information about affects and affective states can be extracted form the physiological signals, even under difficult lighting and pose conditions. Little work has been done on using physiological signals in automated affect recognition systems. We employed measurements of facial skin temperature variations for developing a non-intrusive automated facial expression classification system. Variances in thermal intensity values recorded at thermally significant locations on human faces were used to discern between normal, pretended happy and pretended sad facial expression of affective states. A three-step algorithmic approach was used to construct the classifier. Employed approach involved derivation of principal components, stepwise selection of optimal and most discriminating features, and linear discriminant analysis within the reduced optimal eigenspace. The resulting classifier performed at an impressively low (16.2%) error rate

Item Type:	Book Chapter
Subjects:	T Technology > T Technology (General) Q Science > QC Physics
Schools:	School of Computing and Engineering
Depositing User:	Briony Heyhoe
Date Deposited:	27 Mar 2008 15:07
Last Modified:	09 Sep 2010 10:24
URI:	http://eprints.hud.ac.uk/id/eprint/605

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