基于THz光谱成像的纸币真伪鉴别研究  

Identification of True and Counterfeit Hundred RMB of the 2005 Edition Based on Transmitted THz Pulse Imaging

作　　者：刘海玲 翟东为 杨玉平[1] 崔彬[1] 张振伟[2] 张存林[2] LIU Hai-ling;ZHAI Dong-wei;YANG Yu-ping;CUI Bin;ZHANG Zhen-wei;ZHANG Cun-lin(School of Science,Minzu University of China,Beijing 100081,China;Department of Physics,Beijing Advanced Innovation Center for ImagingTechnology,Beijing Key Laboratory for Terahertz Spectroscopy and Imaging,Key Laboratory of Terahertz Optoelectronics,Ministry of Education,Capital Normal University,Beijing 100048,China)

机构地区：[1]中央民族大学理学院,北京100081 [2]首都师范大学物理系,北京市成像技术高精尖中心,北京市太赫兹波谱与成像重点实验室,太赫兹光电子学教育部重点实验室,北京100048

出　　处：《光谱学与光谱分析》2018年第7期2021-2025,共5页Spectroscopy and Spectral Analysis

基　　金：国家自然科学基金项目(11574408,11374378,61675238和61627814); 国家重大科学仪器设备开发专项(2012YQ14000508); 国家重点研发专项(2017YFB00405402); 留学人员科技活动择优项目; 国家民委“中青年英才”培养计划(2016-03-02)资助

摘　　要：根据纸币防伪特征区域载体材料与制作工艺的不同,利用透射式太赫兹脉冲成像技术对2005版真伪百元人民币的白水印和安全线两处防伪特征区域进行逐点扫描获取相应的太赫兹时域信号,然后对太赫兹波形进行数据处理获得时域显示模式成像及频域显示模式成像。将真钞和假钞的成像结果进行对比,发现白水印、安全线部位的真假钞成像结果区别明显,证实太赫兹脉冲成像技术能够真实、有效地对真假人民币进行多区域、多维度的准确鉴定。Due to the different production material and process between real and counterfeit paper currency,we identified the true and counterfeit hundred RMB of the 2005 edition based on transmitted THz pulse imaging.The point-to-point terahertz pulse imaging technique was used to scan two feature anti-counterfeit area,white watermark and holographic safety margin.Based on the obtained time-domain data and the corresponding frequency-domain data,the THz images with time-domain display mode and frequency-domain display mode were mapped.The difference of imaging effect is obvious at white watermark area and safety line area,which confirm that the transmission terahertz pulse imaging technique can truly and effectively carry out multi-regional and multi-dimensional authenticating true and counterfeiting RMB.

关 键 词：太赫兹脉冲成像技术 假钞鉴别 显示模式 

分 类 号：O433.05[机械工程—光学工程]