RGB颜色数字化特征在手写文件朱墨时序检验中的应用

Application of RGB Color Digitized Features in Ink Timing Sequence of Handwritten Documents

目的基于RGB色彩模式下的颜色数字化特征,实现黑色书写字迹与红色印章印文朱墨时序的有效鉴别。方法基于统计学中的显著性检验原理,通过Photoshop软件的RGB颜色模式来采集颜色数据,利用SPSS数据软件中Mann-Whitney检验进行数据分析,得到朱墨时序的判定依据。结果基于RGB颜色数字化特征的方法适用于手写文件朱墨时序的判定,但对样本有一定要求。在检材与样本同序对比中,R、G、B需有两个或两个以上的P>0.05,异序对比中需有两个或两个以上的P<0.05,即可得出判定结论。结论利用颜色数字化特征能够实现手写文件朱墨时序的有效鉴别,在传统朱墨时序检验方法的基础上,提供数字化无损检验的新方法,为文书物证鉴定领域提供借鉴。

An approach is proposed to realize effective identification of ink timing between black handwriting and red seal inks based on color digitization features in RGB color mode.On the basis of the significance test principle in statistics,color data are taken through the RGB color mode of Photoshop software,and the Mann-Whitney test in SPSS data software is used to analyze the data,by which the judgment basis of ink timing sequence is obtained.The results show that the method based on RGB color digitization features is suitable for the determination of ink timing in handwritten documents,but it has certain requirements for samples.The judgment conclusion can be reached when R,G and B have two or more P values greater than 0.05 in the same-order comparison between the test material and sample,or two or more than two P values less than 0.05 in different order comparison.The effective identification of ink timing sequence of handwritten documents can be realized by using color digitization features.Moreover,a new direction of digital nondestructive inspection is proposed based on the traditional ink timing sequence inspection methods,which provides reference for the field of documentary evidence identification.