A study of measurement of facial skin color using digital camera

VernacularTitle:利用数码相机测定面部皮肤颜色的初步研究
Author: Jiangfei CHEN ; Yimin ZHAO
Publication Type:Journal Article
Keywords: Digital camera; Maxillofacial-,Skin; Color; Measurement
From: Journal of Practical Stomatology 2009;25(6):858-861
CountryChina
Language:Chinese
Abstract: Objective; To evaluate the reliability and reasonability of maxillofacial skin color match using the digital camera. Methods; The stability of the experimental light source was evaluated before establishing the color measurement. 122 volunteers aged from 22 to 32 years were recorded by a Canon EOS 20D digital camera in studio environment when the light source was stable. Photographs were taken under a set exposure parameters(f/4.5,1/25 s,custom white balance,ISO 800) and saved as JPEG format. The CIE L~* a~* b~* color values were obtained from the digital images using Adobe Photoshop7.0 after color correction. All data were analyzed using SPSS 10. 0. Results;The experimental light source was stable in 21 to 70 minutes. It was suitable for color measurement during this period. The color parameters of all tested maxillofacial skin were:L~*49～66,a~*7 - 18,b~*5 -22. Conclusion;The assessment of maxillofacial skin color depend on method of measurement and instrument. The method of maxillofacial skin color matching by digital camera seems reliable.