PROBLEM TO BE SOLVED: To provide a method objectively evaluating the apparent skin state of the face of a subject.SOLUTION: In the method of evaluating the skin state, the luminance of a measurement object part in the face of the subject is measured, its histogram is obtained, and the skin state of the face of the subject is evaluated on the basis of the shape of the histogram. The installation position of a light source is set at a position inclined by -90 to 90 degrees in the view of a horizontal plane to the median line of the subject and the position of inclination of -30 to 75 degrees to the horizontal plane passing through the face of the subject in the view of a vertical plane. The installation position of an imaging means is set at a position inclined by -90 to 90 degrees in the view of the horizontal plane to the median line of the subject and at the position of the inclination of 0 to 75 degrees to the horizontal plane passing through the face of the subject in the view of the vertical plane.COPYRIGHT: (C)2009,JPO&INPIT【課題】被験者の顔面の見た目の肌の状態を客観的に評価し得る方法を提供すること。【解決手段】本発明の肌状態の評価方法は、被験者の顔面における測定対象部位の輝度を測定してそのヒストグラムを得、該ヒストグラムの形状に基づき、該被験者の顔面の肌の状態を評価する。光源の設置位置を、被験者の正中線に対して、水平面でみたときに-90~90度傾斜した位置で、かつ鉛直面でみたときに被験者の顔面を通る水平面に対して俯角-30~75度の位置とし、撮像手段の設置位置を、被験者の正中線に対して、水平面でみたときに-90~90度傾斜した位置で、かつ鉛直面でみたときに被験者の顔面を通る水平面に対して俯角0~75度の位置とする。【選択図】図1
