激光打印文件朱墨时序的数字化特征研究

Research on Digital Characteristics of Laser Printed Files Sequence of Cross Stroke and Stamp Impression

目的通过数字化特征判断激光打印文件朱墨时序。方法采用Photoshop软件的RGB和Lab两种颜色模式处理方法,对激光打印文件中朱墨交叉区域处的颜色信息进行提取,并通过秩和检验转化为具体秩均值,然后以多元化参数方法实现颜色表征,最后利用统计学的原理及方法对颜色信息转化的具体数据进行处理和分析,以此得到朱墨时序的判定结论。结论激光打印文件朱墨时序的数字化特征研判方法,为朱墨时序的检验鉴定提供无损检验的新方法,图像处理技术与文书检验相结合,为数字化特征进入文书物证领域提供借鉴。

Objective Judging the time sequence and mutual dissolution of laser printed documents by digital features.Method The RGB and Lab color mode processing methods of Photoshop software are used to extract the color information at the crossed stroke and stamp impression in the laser printed document.The color information is converted to the specific rank mean value through the rank sum test.Then the color characterization is achieved by the multiple parameter method.Finally,using the principle and method of Statistics,the specific data converted by color information processed and analyzed,so as to obtain the judgment conclusion of Sequence of crossed stroke and stamp impression.Conclusion The method of judging the digital characteristics of the time series of laser printed documents provides a new method of non-destructive testing for the inspection and identification of sequence of crossed stroke and stamp impression.It also provides a reference for the digital characteristics to enter the field of documents and material evidence,and provides a reference for the combination of image processing technology and document inspection.