摘要目的:采用主观评分法和在体无创性仪器测试方法检测上海女性肤色参数。通过偏最小二乘回归架构下的变量投影重要性法则以及主成分分析法建立皮肤色度指数(STI)，应用于肤色的整体评判。方法:2013年11月，上海家化功效评估实验室对60名女性志愿者面颊部位进行各维度皮肤颜色参数检测，比较不同方法所得色度参数之间的相关性。应用偏最小二乘回归架构下的变量投影重要性方法(PLS-VIP)分析影响色度等级的5个主要因素，通过主成分分析综合各参数建立皮肤色度指数(STI，)，并进行STI指数模型验证。结果:除皮肤黄度b值外，肤色等级与各仪器及图像分析测得参数之间相关性都较高(|r|＝0.690～0.865)；对肤色等级影响重要的5个参数为Int(光强度)、L、BS(色素沉积指数)、MI、EI；皮肤色度指数计算公式为STI＝0.47*Int＋0.47*L＋0.43*BS－0.44MI－0.43EI，STI与肤色等级的相关系数为－0.834， P<0.000。 结论:STI可整体反映肤色的变化程度。

abstractsObjective:To measure the skin color parameters of Chinese women with non-invasive instruments test, and to validate assessment scales (VAS) and image analysis. Skin tone index (STI) of Chinese women was created by PLS-VIP method, and then used to the overall evaluation of Chinese women skin color.Methods:The skin color scale by VAS, parameters measured by tristumulus colorimeter, narrow-band-simple reflectance meter and image analysis were administered at the cheek of 60 famle subjects. The correlations among all the parameters collected by the instruments and scales by VAS were investigated, and then the main impact factors of skin color grade were analyzed. The STI model was created by principal component analysis and further tested.Results:With b value exception, skin color score was significantly correlated with the instrument parameters. The absolute values of coefficients were from 0.6898 to 0.8648. Int, L, BS, MI and EI were the most important parameters which influenced the consumer＇s perception of skin visual color. The SWI=0.47*Int+ 0.47*L+ 0.43*BS-0.44MI-0.43EI was created by PLS-VIP. The coefficient between SWI and skin color scale was -0.834 ( P<0.0001). Conclusions:STI could be effectively and comprehensively representative of the degree of skin color change.