墨粉FTIR光谱图形相似法模糊鉴别激光打印机型  

Fuzzy identification of laser printer based on similar black-powder FTIR spectrum graphics

作　　者：王宁[1] 韩国强[1] 

机构地区：[1]华南理工大学计算机科学与工程学院

出　　处：《计算机应用研究》2008年第7期2200-2202,2207,共4页Application Research of Computers

基　　金：国家自然科学基金资助项目(60573019);广东省自然科学基金重点资助项目(05103541);广东省自然科学基金博士科研启动基金资助项目(05300198);广州市公安局及广东省公安厅科研基金资助项目

摘　　要：提出一种相关系数模糊判别法鉴别相似的墨粉傅里叶变换红外(FTIR)光谱图形,改变目测图形相似程度和图形吸收峰波数简单比较的主观粗略的鉴别方法,以达到客观准确认定激光打印机型的目的。它能广泛用于与激光打印机有关的司法案件的鉴定。首先运用FTIR技术获取相关激光打印机墨粉的FTIR光谱图形;再将FTIR图形的各吸收峰波数,及其一阶、二阶导数和自卷积作为指标,计算图形的相关系数;最后,以相关系数为图形相似的指标和建立模糊关系函数的基础,用模糊数学综合判别法确定激光打印机型的鉴别结果。实验结果达到算法设计的目的。This paper proposed a new method of correlation coefficient fuzzy identification to evaluate the similar Fourier transform infrared （FHR） spectrum graphics. It improved the subjective and rough identification in eyeballing the similar degree of graphics and the simple comparison of wavenumbers of graphics. So it could identify the type of laser printer objectively and accurately and could be used widely in the case identification involved with laser printer. First, the FTIR spectrum graphics of black-powder of laser printer was got by FTIR technique. Then, as the base of graphics similarity and fuzzy relationship function, the correlation coefficient of graphics was calculated by the wavenumbers, the first derivative, the second derivative and the self-deconvolution of FTIR spectrum graphics. Finally, the type of laser printer was identified by fuzzy synthetic evaluation. The result of experiment shows that the algorithm can meet the aim of design.

关 键 词：墨粉 傅里叶变换红外光谱图形 相关系数 模糊鉴别 激光打印机 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]