包1(R:ⅡBamd4G:nBmd3,B:1Ba:回☒ File Overlay nco Tools Window Filter Inage】Linear harpen Smooth [3x3T [Inage]Square Root Snooth [5x51 0-25 [Zoom]Gaussian [Zoom】Equalization [Zoon]Square Root [Serol1】Gaussian [Serol1】Square Root 方法2：ENWI长条菜单栏Filter SERVI File Basic Tools Classification Transforn Spectral Map Vector Topographic Convolutions and Morphology 步骤1 Filtering Convolutions and lorpholo. ▣☒ File Convolution Morphology Options Melp High Pass Lov Pass Ker Lanlecian 步骤2：，选择开 Directional 骨或锐化类型 Gaussian High Pass 1 E1.0 Gaussi an Low Fass -1.0 Sobel Roberts User Defined Quick Apply Apply To File. 方法 2：ENVI 长条菜单栏 Filter