指纹时间遗留模型的研究及验证  

Research and Verification of Fingerprint Time Retention Model

作　　者：庾金涛 李清灵 李磊[1,2,3] 尹达一 Yu Jintao;Li Qingling;Li Lei;Yin Dayi(Key Laboratory of Infrared System Detection and Imaging, Chinese Academy of Sciences, Shanghai 200083, China;Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai 200083, China;University of Chinese Academy of Sciences, Beijing 100049, China)

机构地区：[1]中国科学院红外探测与成像技术重点实验室,上海200083 [2]中国科学院上海技术物理研究所,上海200083 [3]中国科学院大学,北京100049

出　　处：《光学学报》2019年第5期383-388,共6页Acta Optica Sinica

基　　金：国家自然科学基金(40776100).

摘　　要：针对化学方法会破坏指纹样本的问题,提出了一种紫外成像的光学方法。基于氨基酸和尿素的相对浓度关系以及散射光谱曲线理论,推导了指纹在不同紫外波段的辐亮度比值与时间关系的数学模型。搭建了一套紫外多光谱成像设备?在3个紫外波段对指纹进行了无损提取。对不同波段指纹图像的DN值进行反演分析?得到了不同波段的DN值之比与指纹遗留时间之间的关系。实验结果表明:各紫外波段的DN值之比仅与时间有关,与指纹个体差异无关。指纹老化曲线拟合的表达式与推导的数学模型一致,验证了紫外多光谱成像对指纹遗留时间评估的可行性?为无损指纹测龄提供了一种重要的分析方法。The commonly used chemical methods result in the destruction of the fingerprint samples;therefore, an optical ultraviolet imaging method is proposed in this study. Further, a mathematical model of the relationship between the radiance ratio and the fingerprint retention time in different ultraviolet bands is derived based on the relative concentration relation between amino acids and urea and the scattering spectral curve theory. In addition, we have developed an ultraviolet multispectral imaging device to perform the lossless fingerprint extraction in three ultraviolet bands. An inversion analysis of the digital number (DN) values of the different-band fingerprint images is conducted to obtain the relationship between the ratio among DN values in different bands and the fingerprint retention time. The experimental results denote that the ratio among the DN values in different ultraviolet bands is only related with time and not with the individual fingerprint difference. Moreover, the expression of the fingerprint aging curve fitting is consistent with that provided in the derived mathematical model, and the feasibility of the usage of ultraviolet multipass spectral imaging for conducting the fingerprint retention time evaluation is verified, which provides an important analysis method for performing the non-destructive fingerprint aging evaluation.

关 键 词：光谱学 紫外 指纹遗留模型 多光谱成像 无损测龄 

分 类 号：TN23[电子电信—物理电子学]