皮肤色卡反射率及图谱数据库的构建

Establishment of a database for skin color card reflectance and spectra

目的利用潘通肤色指南(PSTG)的110张色卡构建一个包含反射谱、数据、相应颜色及模式参数的数据库。方法选取110张皮肤色卡和5例正常人手背皮肤进行反射谱测量;进行色卡和皮肤的反射谱对比和分析;对获得的数据、图像、5种色彩模式参数汇总成数据库。结果110张皮肤色卡中,在350~400 nm的紫外光波段内存在显著的吸收峰。在400~780 nm的可见光范围内,曲线随明度和饱和度变化,但特征峰均在590 nm附近。当饱和度保持不变时,明度的降低导致反射率下降,表明亮度降低趋于黑色。当明度保持不变时,反射率曲线的高低值相差越大,饱和度越高,颜色更加鲜亮。在体实验与上述表现一致。结论色卡反射谱与皮肤本身的组成、表面结构有关。该数据库可以为医学研究、临床实践及其他相关领域提供有价值的数据支持。

Objective To construct a database comprising the reflectance spectra,data,and corresponding color and mode parameters using 110 skin color cards from the Pantone Skin Tone Guide(PSTG).Methods The measurement of reflectance spectrum was conducted on 110 internationally recognized skin color cards from the PSTG and the dorsal hand skin of five healthy individuals.Comparative analysis of the reflectance spectra between the color cards and the normal skin was performed.The collected data,images,and parameters of five color models were summarized into a database.Results Significant absorption features were observed in the ultraviolet range of 350-400 nm.In the visible light range of 400-780 nm,the reflectance curves varied with value and chroma,but all exhibited characteristic peaks were around 590 nm.When saturation was constant,a decrease in brightness resulted in reduced reflectance,indicating that lower brightness tends towards black.When brightness was constant,changes in saturation led to increased differences in reflectance,making colors more vivid.The in vivo experiments showed consistent results with the aforementioned observations.Conclusions The reflectance spectra of the color cards are related to the composition and surface structure of the skin.This database can provide valuable data support for medical research,clinical practice,and other related fields.