Non invasive control and scoring of psoriasis severity

摘要

In dermatology, image processing allows non-contact and non-invasive metrological measurements. Psoriasis isan incurable skin disease with an unknown origin. One of the most important tasks in the treatment of psoriasisis to evaluate the degree of the illness following a severity score. Dermatologists use visual and tactile senses toassess the lesions severity. In this article, we propose an automated methodology for assessing objectively theseverity of psoriasis by measuring the physical parameters of the skin. Thus, from the colorimetry and geometryobtained by photometric-stereo, we determine the level of erythema and skin thickness. Our results show thatfor a low acquisition time, the scores obtained are highly correlated with those of dermatologists.