摘要
目的探索区分不同激光打印机打印样本的量化分析方法。方法运用"图像扫描分析系统"对打印件上由制造工艺等因素引起的,人眼无法辨识的微观特征如打印字迹的灰度、背景噪声点面积等相关参数进行量化测量研究和数据分析。结果使用15项参数组合,能够将18台不同型号激光打印机3 600页打印样本中的3 596页正确分类,正确率为99.8%。结论通过上述15项参数可区分不同类型的激光打印机,此方法对于不同类型激光打印机中等打印量的打印样本分类具有可行性。
Objective To establish a quantitative method for the classification of printed samples produced by different laser printers. Method A quantitative measurement and data analysis of the gray scale of printed contents, background and other related parameter terms was conducted using the ImageXaminer. Results 3 596 out of 3 600 pages of printed samples produced by 18 different laser printers were correctly classified based on the comprehensive analysis of 15 parameter terms. The accuracy of classification was 99.8%. Conclusion These 15 parameter terms can be used to distinguish samples of different types of laser printers.
出处
《中国司法鉴定》
2015年第5期56-62,共7页
Chinese Journal of Forensic Sciences
基金
上海市公安局科研项目(NO.2014002)
关键词
文件检验
激光打印
微观特征
量化
questioned document examination
laser printing
microscopic characteristics
quantification
