PROBLEM TO BE SOLVED: To provide an epidermis thickness estimating method for estimating an epidermis thickness noninvasively and conveniently.SOLUTION: The image of a cuticle is taken by a microscope from the skin surface of a subject, and the concentration of the distribution of an angiogram (or a loop-shaped capillary vessel density) by the loop-shaped capillary vessel, in which blood is flowing observed in the image. On the basis of the relations acquired from a plurality of persons between the loop-shaped capillary vessel density and the cuticle thickness, the epidermis thickness is estimated from the loop-shaped capillary vessel density of the subject.COPYRIGHT: (C)2016,JPO&INPIT【課題】非侵襲的、かつ簡便な方法で表皮厚を推定する。【解決手段】被験者の皮膚表面からマイクロスコープで表皮の画像を撮り、該画像に観察される、血液が流れているループ状毛細血管による血管像の分布の密度（ループ状毛細血管密度）を計測し、複数人から取得されたループ状毛細血管密度と表皮厚との関係に基づき、被験者のループ状毛細血管密度から表皮厚を推定する。【選択図】図３
