[3] Levenson R M,Clifford C Hoyt. American Laboratory,2000,32:26.
[4] Masahiro Yamaguchi,Taishi Teraji. Proc. SPIE,2002,4663:15.
[8] Nakariyakul S,Casasent D. Hyperspectral Ratio Feature Selection:Agricultural Product Insection Example(OL).http://www.google.com.
[9] Masahiro Yamaguchi,Ryo Iwama,Yuri Ohya,et al. Proc. SPIE,1997,3031:482.