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| 利用ImageXpress系统灰度特征区分激光打印复印一体机的打印及复印文件初探 | |
| 引用本文： | 梁政,韩星周,郝红光.利用ImageXpress系统灰度特征区分激光打印复印一体机的打印及复印文件初探[J].刑事技术,2013(4):36-40. |
| 作者姓名： | 梁政 韩星周 郝红光 |
| 作者单位： | 1. 中国人民公安大学,北京,100038 2. 中国人民公安大学,北京 100038;公安部物证鉴定中心,北京 100038 3. 公安部物证鉴定中心,北京,100038 |
| 基金项目： | 公安部重点实验室开放项目 |
| 摘 要： | 目的探索区分激光打印复印一体机的打印文件及复印文件的方法。方法利用ImageXpress系统对理光MP4000BSP激光打印复印一体机的打印文件和复印文件进行灰度特征值的测量。结果两种文件的灰度平均值的平均值和95%置信区间存有明显的差异,且这种差异较为稳定：打印件的平均值约为50,而复印件约为53;打印件的95%置信区间介于50和51.5之间,而复印件的置信区间介于52.5与54之间。结论本方法通过量化对激光打印复印一体机打印及复印文件进行区分是可行的。 |
| 关 键 词： | 激光打印 复印 灰度值特征 量化 |
Distinguishing between laser-printed and copied documents by using imageXpress |
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| LIANG Zheng , HAN Xing-zhou , HAO Hong-guang.Distinguishing between laser-printed and copied documents by using imageXpress[J].Forensic Science and Technology,2013(4):36-40. | |
| Authors: | LIANG Zheng HAN Xing-zhou HAO Hong-guang |
| Institution: | (Chinese People＇s Public Security University,Beijing 100038,China) |
| Abstract: | Objective To explore a quantification method to distinguish printed documents and copied documents printed and copied with a same all-in-one laser printer.Methods The gray scales of documents printed and copied by RICH MP4000BSP all-in-one laser printer are measured by ImageXpress.Results The average and distribution range of gray scale of laser-printed documents are different significantly with that of copied documents.Conclusion It is possible to distinguish printed documents from copied documents printed and copied with a same all-in-one laser printer. |
| Keywords: | laser printing copy gray scale quantification |
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