牙科用商用数码相机的色彩准确性
Color accuracy of commercial digital cameras for use in dentistry.
作者信息
Wee Alvin G, Lindsey Delwin T, Kuo Shanglun, Johnston William M
机构信息
Section of Restorative and Prosthetic Dentistry, College of Dentistry, The Ohio State University, Postle Hall, 305 West 12th Avenue, P.O. Box 182357, Columbus, 43210-1241, USA.
出版信息
Dent Mater. 2006 Jun;22(6):553-9. doi: 10.1016/j.dental.2005.05.011. Epub 2005 Sep 29.
OBJECTIVES
The use of calibrated, commercial digital cameras for dental applications is promising. The color accuracy of various calibration models were evaluated as applied to three commercial digital cameras for use in dental color matching.
METHODS
CIE LAB values of 264 color patches and 65 shade tabs were measured with a spectroradiometer. Digital images of the samples were taken with the Nikon D100, Canon D60 and Sigma SD9 cameras. Four regression models were formulated from the color patch CIE LAB and the digital image values. Shade tab CIE LAB colors were predicted by applying the digital image values into the calibration models and were compared to the measured CIE LAB values. The Wilcoxon Rank-Sum test determined if the 12 camera/calibration models differed significantly from the color measurement setup.
RESULTS
Every camera/calibration model (DeltaE's ranging from 1.79 to 5.25) showed a statistically significant difference from the color measurement setup.
SIGNIFICANCE
Commercial SLR digital cameras when combined with the appropriate calibration protocols showed potential for use in the color replication process of clinical dentistry.
目的
使用经过校准的商用数码相机用于牙科应用前景广阔。评估了各种校准模型应用于三款用于牙科颜色匹配的商用数码相机时的颜色准确性。
方法
用分光辐射计测量264个色片和65个比色板的CIE LAB值。用尼康D100、佳能D60和西格玛SD9相机拍摄样本的数字图像。根据色片的CIE LAB值和数字图像值建立了四个回归模型。将数字图像值应用于校准模型来预测比色板的CIE LAB颜色，并与测量的CIE LAB值进行比较。采用威尔科克森秩和检验来确定12种相机/校准模型与颜色测量装置是否存在显著差异。
结果
每个相机/校准模型（色差范围为1.79至5.25）与颜色测量装置相比均显示出统计学上的显著差异。
意义
商用单反数码相机与适当的校准协议相结合，在临床牙科颜色复制过程中显示出应用潜力。
Zotero 插件