Source separation on hyperspectral cube applied to dermatology

Jhimli Mitra (1) , Romuald Jolivot (1) , Franck S. Marzani (1) , Pierre Vabres (1, 2)

1 Le2i - Laboratoire Electronique, Informatique et Image [UMR6306]
2 CHU Dijon

This paper proposes a method of quantification of the components underlying the human skin that are supposed to be responsible for the effective reflectance spectrum of the skin over the visible wavelength. The method is based on independent component analysis assuming that the epidermal melanin and the dermal haemoglobin absorbance spectra are independent of each other. The method extracts the source spectra that correspond to the ideal absorbance spectra of melanin and haemoglobin. The noisy melanin spectrum is fixed using a polynomial fit and the quantifications associated with it are reestimated. The results produce feasible quantifications of each source component in the examined skin patch.

Mots clés: Independent Component Analysis; Source separation; Spectral reflectance; Non-Gaussianity; Kurtosis; Independent Component Analysis.

Domaines: Traitement du signal et de l'image [eess.SP]; Traitement du signal et de l'image [eess.SP]

Jhimli Mitra, Romuald Jolivot, Franck S. Marzani, Pierre Vabres. Source separation on hyperspectral cube applied to dermatology. SPIE Medical Imaging meeting, Feb 2010, San Diego, United States. pp.762431-1, 762431-11. ⟨hal-00638586⟩