Characterizing hyperspectral signatures of human faces in the shortwave infrared spectrum

Robert J. Goldman; Minas Benyamin; Matthew Thielke; Shuowen Hu

doi:10.1117/12.2519735

7 May 2019 Characterizing hyperspectral signatures of human faces in the shortwave infrared spectrum

Robert J. Goldman, Minas Benyamin, Matthew Thielke, Shuowen Hu

Proceedings Volume 11018, Signal Processing, Sensor/Information Fusion, and Target Recognition XXVIII; 110180Z (2019) https://doi.org/10.1117/12.2519735
Event: SPIE Defense + Commercial Sensing, 2019, Baltimore, MD, United States

Abstract

Hyperspectral imaging provides extensive spectral reflectance information useful for material classification and discrimination not available with conventional broadband imaging. In this work, we first seek to characterize the hyperspectral signature of human faces in the shortwave infrared (SWIR) band. A hyperspectral SWIR face dataset of 100 subjects was collected as part of this study. Regions of interest (ROI) were defined for each subject and the mean and variance of each ROI were computed. The results show that hyperspectral signatures are similar between male and female subjects for the cheek, forehead, and hair ROIs. Furthermore, this study investigated whether the hyperspectral face signatures from the ROIs contained discriminative information for gender classification. We implemented and trained five different classifiers for gender classification. Results from the machine learning experiments indicate that hyperspectral facial signatures in the SWIR band is only weakly discriminative with respect to gender.

Conference Presentation

Citation Download Citation

Robert J. Goldman, Minas Benyamin, Matthew Thielke, and Shuowen Hu "Characterizing hyperspectral signatures of human faces in the shortwave infrared spectrum", Proc. SPIE 11018, Signal Processing, Sensor/Information Fusion, and Target Recognition XXVIII, 110180Z (7 May 2019); https://doi.org/10.1117/12.2519735

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