基于ENVI二次开发，利用IDL实现了:矢量文件shp的调用 roi的掩膜 NDVI,LBV和SOBEL的阈值计算 存储生成ENVI所识别的img文件 提取海面的养殖信息 二值法分割等。-Based on ENVI secondary development, the use of IDL realized: call the vector file shp　roi mask　NDVI, LBV and SOBEL threshold value　img file storage generation ENVI identified　extract information farmed sea　binary segmentation method and so on.