Reflectance-based skin detection in the short wave infrared band and its application to video

Tye Langston

doi:10.1117/1.JRS.10.046026

14 December 2016 Reflectance-based skin detection in the short wave infrared band and its application to video

Tye Langston

Author Affiliations +

Journal of Applied Remote Sensing, Vol. 10, Issue 4, 046026 (December 2016). https://doi.org/10.1117/1.JRS.10.046026

Abstract

Robust reflectance-based skin detection is a potentially powerful tool for security and search and rescue applications, especially when applied to video. However, to be useful it must be able to account for the variations of human skin, as well as other items in the environment that could cause false detections. This effort focused on identifying a robust skin detection scheme that is appropriate for video application. Skin reflectance was modeled to identify unique skin features and compare them to potential false positive materials. Based on these comparisons, specific wavelength bands were selected and different combinations of two and three optical filters were used for actively identifying skin, as well as identifying and removing potential false positive materials. One wavelength combination (1072/1250 nm) was applied to video using both single- and dual-camera configurations based on its still image performance, as well as its appropriateness for video application. There are several important factors regarding the extension of still image skin detection to video, including light available for detection (solar irradiance and reflectance intensity), overall intensity differences between different optical filters, optical component light loss, frame rate, time lag when switching between filters, image coregistration, and camera auto gain behavior.

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Tye Langston "Reflectance-based skin detection in the short wave infrared band and its application to video," Journal of Applied Remote Sensing 10(4), 046026 (14 December 2016). https://doi.org/10.1117/1.JRS.10.046026

Published: 14 December 2016

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