Memorias de investigación
Research Publications in journals:
Infrared Thermography Processing to Characterize Emotional Stress: A Pilot Study
Year:2017

Research Areas
  • Computation theory,
  • Algorithms,
  • Artificial intelligence,
  • Medical computing,
  • Database,
  • Automatic,
  • Learning,
  • Recognition of patterns,
  • Image processing,
  • Characteristic extraction

Information
Abstract
Infrared Thermography (IRT) is a widely used technique for the detection of temperature change patterns. In the present study, we are interested in its application to the non-invasive follow-up of temperature changes on emotionally stressed people. Nine subjects performed the arithmetic task of the Trier Social Stress Test (TSST) while IRT videos were acquired. A pipeline was implemented to follow the temperature changes on Regions-of-Interest (ROIs) of the facial IRT videos. The pipeline is divided in four main blocks: (1) Frame selection, (2) image preprocessing (i.e., noise reduction), (3) face segmentation, (4) detection of ROIs (i.e., forehead, nose) and temperature extraction. Block 2 relies in an implementation of Growing Hierarchical Self-Organizing Maps (GHSOM). Faces are segmented (Block 3) with Hybrid Geodesic Region-Based Active Contours (HGRBAC). The detection of the ROIs (Block 4) is performed using the Viola-Jones classification method and finally, the temperature is extracted on the ROIs as a function of the time to enable the identification of stress patterns. Each subject?s performance on the TSST tasks was measured by an Efficiency Ratio, being its value related to the level of concentration of the subject while performing the exercise.
International
Si
JCR
No
Title
IET DIGITAL LIBRARY
ISBN
978-1-78561-652-5
Impact factor JCR
Impact info
Volume
10.1049/cp.2017.0148
Journal number
From page
155
To page
160
Month
NOVIEMBRE
Ranking
Participants

Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: Tecnologías de Apoyo a la Vida
  • Departamento: Tecnología Fotónica y Bioingeniería
  • Departamento: Matemática Aplicada a Las Tecnologías de la Información y Las Comunicaciones