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图2.6 平均值统计............................................................................................. 16

图2.7 查看进行合并阈值时临时文件的路径................................................. 17

图2.8 打开临时文件......................................................................................... 17

图2.9 添加兴趣区............................................................................................. 17

图2.10 创建绿地类型....................................................................................... 18

图2.11 选取适当的兴趣区............................................................................... 18

图2.12 统计绿地信息....................................................................................... 18

图2.13 设置绿地对应NDVI的阈值............................................................... 19

图2.15 添加屋顶类型....................................................................................... 19

图2.14 设置蓝波段对应的阈值....................................................................... 20

图2.15 设置输出矢量结果............................................................................... 20

图2.16 部分试验区结果图............................................................................... 20