The structure of the epidermis is frequently altered by pathogens or the ageing process. Observed under a microscope, histological specimens of the skin reveal this structure and allow for the measurement of various criteria such as the overall folding of the surface or base of the epidermis and its average thickness.
For each image a curvature measurement for the superior limit of the epidermis, another for the dermal-epidermal junction and another for the overall epidermis. These curves are between 0 for a completely straight contour to 100 for an extremely curved contour.
For each image a measurement in μm of median thickness of the epidermis in the sample observed. The measurement is obtained through a combination of more than 1000 thickness measurements along the epidermis.