Estimating physiological skin parameters from hyperspectral signatures

Saurabh Vyas, Amit Banerjee, Philippe Burlina

Research output: Contribution to journalArticle

Abstract

We describe an approach for estimating human skin parameters, such as melanosome concentration, collagen concentration, oxygen saturation, and blood volume, using hyperspectral radiometric measurements (signatures) obtained from in vivo skin. We use a computational model based on Kubelka-Munk theory and the Fresnel equations. This model forward maps the skin parameters to a corresponding multiband reflectance spectra. Machine-learning-based regression is used to generate the inverse map, and hence estimate skin parameters from hyperspectral signatures. We test our methods using synthetic and in vivo skin signatures obtained in the visible through the short wave infrared domains from 24 patients of both genders and Caucasian, Asian, and African American ethnicities. Performance validation shows promising results: good agreement with the ground truth and well-established physiological precepts. These methods have potential use in the characterization of skin abnormalities and in minimally-invasive prescreening of malignant skin cancers.

Original languageEnglish (US)
Article number057008
JournalJournal of biomedical optics
Volume18
Issue number5
DOIs
StatePublished - May 1 2013

Keywords

  • hyperspectral signatures
  • inverse mapping
  • machine learning regression
  • skin parameters

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Biomaterials
  • Atomic and Molecular Physics, and Optics
  • Biomedical Engineering

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