Feature spectrum extraction of human fingernails based on LCTF multispectral imaging  

基于LCTF多光谱成像的人体指甲特征光谱提取（英文）

作　　者：ZHAO Dong-e ZHAO Bao-guo WU Rui CHEN Yuan-yuan FAN Xiao-yi 赵冬娥;赵宝国;吴瑞;陈媛媛;范小伊(中北大学信息与通信工程学院,山西太原030051;中国兵工学会,北京100089)

机构地区：[1]College of Information and Communication Engineering,North University of China,Taiyuan 030051,China [2]China Ordnance Society,Beijing 100089,China

出　　处：《Journal of Measurement Science and Instrumentation》2019年第2期199-204,共6页测试科学与仪器（英文版）

基　　金：Nationnal Natural Science Foundation of China(No.61605176)

摘　　要：A multispectral imaging system consisting of liquid crystal tunable filter(LCTF)and charge coupled device(CCD)camera was used to collect the images of fingernail samples at intervals of 10 nm during the spectral range of 450-1 000 nm,and a multispectral image of human fingernails containing 56 bands was obtained.The accurate reflectivity information of fingernails was obtained through referring whiteboard comparative measurement method.Principal component analysis(PCA)and band index method were used to reduce the dimension of the sample images respectively and two feature spaces were obtained.Spectral angle mapping(SAM)was used to classify human fingernails in these two feature spaces.The classification accuracy were above 92.5%and 82.9%respectively.Therefore,the feature space obtained by the PCA can be used as the characteristic spectrum of human fingernails,which provides a reliable basis for the analysis of multispectral spectrum of fingernails and human health assessment in the future.

关 键 词：multispectral imaging feature spectrum band index principal component analysis(PCA) human fingernails 

分 类 号：O433.3[机械工程—光学工程]