Title :
Investigation of material identification with terahertz pulsed imaging
Author :
Wang, Yingxin ; Zhao, Ziran ; Chen, Zhiqiang ; Zhang, Li ; Kang, Kejun
Author_Institution :
Dept. of Eng. Phys., Tsinghua Univ., Beijing
Abstract :
Terahertz pulsed imaging provides a wealth of information about the terahertz response of the material under test. We investigate the identification and classification of explosives and common materials based on their terahertz absorption spectra obtained by this spectroscopic imaging technique. In the classification experiment, an accuracy of 96.6% is achieved by using Fisher´s linear discriminant analysis for dimensionality reduction of the original spectral data set and support vector machine classifier for classification.
Keywords :
explosives; materials testing; submillimetre wave imaging; submillimetre wave spectra; Fisher´s linear discriminant analysis; dimensionality reduction; material identification; material under test; spectral data set; spectroscopic imaging technique; support vector machine; terahertz absorption spectra; terahertz pulsed imaging; Absorption; Biological materials; Biomedical materials; Explosives; Linear discriminant analysis; Materials testing; Optical imaging; Spectroscopy; Support vector machine classification; Support vector machines;
Conference_Titel :
Microwave and Millimeter Wave Technology, 2008. ICMMT 2008. International Conference on
Conference_Location :
Nanjing
Print_ISBN :
978-1-4244-1879-4
Electronic_ISBN :
978-1-4244-1880-0
DOI :
10.1109/ICMMT.2008.4540705