Problem to be solved: to provide a technique for quantifying the impression of appearance of rough skin.The method of evaluating the skin roughness is a step (S11) for obtaining the rate of defoliation, which is the ratio of the area of the litter area extracted from the skin image to the skin area of the subjects skin image (S11), and the case where the rate of defoliation acquired in the step (S11) is below a predetermined rate and is different from the case where the rate of defoliation is lower than a predetermined rate A method of quantifying skin roughness using a different method is included.Diagram【課題】肌荒れの見た目の印象を定量化する技術を提供する。【解決手段】肌荒れ評価方法は、被験者の肌画像の肌面積に対するその肌画像から抽出された落屑領域の面積の割合である落屑割合を取得する工程(S11)と、工程(S11)で取得された落屑割合が所定割合を下回る場合と上回る場合とで、異なる指標又は異なる方法を用いて、肌荒れ状態を定量化する工程(S12)と、を含む。【選択図】図1
