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
梁政, 韩星周, 郝红光
Distinguishing between laser-printed and copied documents by using imageXpress
LIANG Zheng, HAN Xing-zhou, HAO Hong-guang
刑事技术 . 2013, (4): 36 -40 .