Hyperspectral imaging system for in-vivo quantification of skin pigments

Pierre Seroul (1) , Mathieu Hébert (2) , Matthieu Jomier (1)

1 Newtone Technologies
2 LHC - Laboratoire Hubert Curien

We present a new hyper-spectral imaging system, SpectraCam®, allowing the capture of in-vivo images of the skin over the whole visible spectrum under UV or white light. The use of cross-polarization enables removing light reflections of the stratum corneum, which may be an important error factor in chromophores quantification. An implementation of the Kubelka-Munk model combined with Saunderson correction allows measuring six parameters of Caucasian skin: epidermis thickness, melanin volume fraction, blood volume fraction, oxygen saturation and bilirubin volume fraction. Maps of these parameters can be displayed and different structures may be observed such as blood vessels, pores, hematoma or pigmented spots. An error map is also provided to highlight structure that do not fit will the developed skin reflectance model. All the results obtained have been correlated to previous results in the literature.

Domaines: Optique / photonique

Pierre Seroul, Mathieu Hébert, Matthieu Jomier. Hyperspectral imaging system for in-vivo quantification of skin pigments. IFSCC, Oct 2014, Paris, France. ⟨hal-01080593⟩