5ABHIJIT S P ROBERT B M.神经网络模式识别及其实现[M].北京:电子工业出版社,1999.115-119.
6张大鹏 李仲荣.灰度-差值共生矩阵图像纹理分析方法.信息与控制,1987,(5):28-31.
7Dong-chen He and Li Wang.Texture features based on texture spectrum [ J ]. Pattern Recognition, 1991 ; 24(5) :391 -399.
8高惠旋.实用统计方法与SAS系统[M].北京:北京大学出版社,2001..
9Zhang N,Chaisattapagon C.Effective criteria for weed identification in wheat fields using machine vision[J].Transactions of the ASAE,1995,38(3):965-974.
10Ledent J F,Peinetti R.Effect of water status on leaf angle and leaf movement in wheat[J].Journal of Agronomy & Crop Science,1990,165(4):263.
