Automatic blush detection in ‘concealed information’ test using visual stimuli
by Shigang Yue; Karl Harmer; Kun Guo; Karen Adams; Andrew Hunter
International Journal of Data Mining, Modelling and Management (IJDMMM), Vol. 6, No. 2, 2014

Abstract: Blushing has been identified as an indicator of deception, shame, anxiety and embarrassment. Although normally associated with the skin coloration of the face, a blush response also affects skin surface temperature. In this paper, an approach to detect a blush response automatically is presented using the Argus P7225 thermal camera from e2v. The algorithm was tested on a sample population of 51 subjects, while using visual stimuli to elicit a response, and achieved recognition rates of ∼77% TPR and ∼60% TNR, indicating a thermal image sensor is the prospective device to pick up subtle temperature change synchronised with stimuli.

Online publication date: Sun, 06-Jul-2014

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