Band Ratio Input Bands ☒ Select from the Available Bands: co_tar.ims,0.450 TM Band20.500 d 3600) 口TM Band5a.6500 0 IM Band72.2150) Nunerator: TM Band 4 (0.8300):can_tmr.img Denominator: TM Band 3 0.6600):can_tar.img Enter Pair Clear Selected Ratio Pairs: 步2德分盆然 Delete Delete All 方法3：Envi长条菜单栏Transform File Basic Tools Classification Filter Spectral Map Inage Sharpening Band Ratios Principal Components MNF Rotation Color Transforms Decorrelation Stretch 步骤1 mVI (Veeetation Inde〕 Tasseled Cap方法 3：Envi 长条菜单栏 Transform