加齢及び化粧品による皮表形態の変化

画像解析及びフーリエ変換を応用した新しい方法による3次元解析

抄録

The surface configuration of the skin characterized by surface furrows and rises is known to change with aging and skin condition. And there have heen many attempts to analyse the surface configration in order to evaluate the effect of skin care products. However the systems proposed up to now are insufficient to obtain three-dimensiomal informations.
We developed a new system of analysis based on image analysis and the Fourier transform so we can make a quick and quantitative analysis of the three-dimensional surface configuration of the skin, applying the new method to measure changes in the surface configuration caused by aging and clarify the effects of cosmetic cream.
As a result of measuring changes caused by aging, it was found that the furrows become less pronounced, the texture gets coarse and irregular, and the furrows become uniform in one direction as women from 20 through 60s grow in years. This findings are believed to correspond to the fact that the skin's metabolic and moisturizing functions deteriorate as a result of aging.
By measuring changes in the surface configuration before and after application of the cream, it was found that the furrows become more conspicuous and the texture becomes finer in the surface configuration after the application of the cream. This is believed to be attributable to plumpness of the epidermal rise caused by the moisturizing effect of the cream.