A field test study of our non-invasive thermal image analyzer for deceptive detection

Sarun Sumriddetchkajorn; Armote Somboonkaew; Tawee Sodsong; Itthipol Promduang; Niti Sumriddetchkajorn

doi:10.1117/12.726638

13 July 2007 A field test study of our non-invasive thermal image analyzer for deceptive detection

Sarun Sumriddetchkajorn, Armote Somboonkaew, Tawee Sodsong, Itthipol Promduang, Niti Sumriddetchkajorn

Proceedings Volume 6633, Biophotonics 2007: Optics in Life Science; 66331F (2007) https://doi.org/10.1117/12.726638
Event: European Conferences on Biomedical Optics, 2007, Munich, Germany

Abstract

We have developed a non-invasive thermal image analyzer for deceptive detection (TAD²) where the far-infrared data around the periorbital and nostril areas are simultaneously analyzed. Measured change in maximum skin temperature around two periorbital regions is converted to a relative blood flow velocity. A respiration pattern is also simultaneously determined via the ratio of the measured maximum and minimum temperatures in the nostril area. In addition, our TAD² employs a simple normalized cross correlation scheme to independently track locations of the two periorbital and nostril areas. Our field case study from 7 subjects in two real crime scenes and with the use of our baseline classification criteria shows two-fold improvement in classification rate compared to our analysis using either the periorbital or nostril area alone.

Citation Download Citation

Sarun Sumriddetchkajorn, Armote Somboonkaew, Tawee Sodsong, Itthipol Promduang, and Niti Sumriddetchkajorn "A field test study of our non-invasive thermal image analyzer for deceptive detection", Proc. SPIE 6633, Biophotonics 2007: Optics in Life Science, 66331F (13 July 2007); https://doi.org/10.1117/12.726638

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