Dresden 2009 – wissenschaftliches Programm

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DY: Fachverband Dynamik und Statistische Physik

DY 12: Poster I

DY 12.40: Poster

Dienstag, 24. März 2009, 14:30–16:30, P1A

Analysing the reflectance spectra of human skin — •Lioudmila Belenkaia1, Philippe-A. Bourdin1, Vera Sterzik2, Michael Bohnert2, and Andreas W. Liehr11Freiburger Materialforschungszentrum, Stefan-Meier-Str. 21, 79104 Freiburg — 2Institut für Rechtsmedizin, Albertstr. 9, 79104 Freiburg

Analysing the measurement data of a complex system always means interpreting the data with respect to a certain model. For the interpretation of the reflectance spectra of human skin, we use a twofold model. Part one of the model relates mesoscopic quantities like concentrations of skin dyes and the scatterer size distribution to characteristic optical parameters. The second part is a simulation of the experiment, which relates the reflectance to the optical parameters and therefore enables the estimation of the mesoscopic parameters on the basis of the measured reflectance [1]. In order to apply this model to topics of legal medicine a scientific information repository has been developed, which enables the physicist to store the measured reflectance spectra and to browse the analysis performed by the physician [2]. This contribution discusses the twofold model, the scientific information repository, and the experimental verification that the discolouration of livor mortis due to cooling is caused by re-oxygenation [3].

[1] Bohnert et al.: Int J Legal Med, 2005, 119, 355-362

[2] Belenkaia et al: arXiv:cs.DB/0612123

[3] Bohnert et al: Int J Legal Med, 2008, 122, 91-96

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