无人机搭载高分辨率传感器在精细地形监测中的应用
程平平, 吴坤鹏, 肖乐天, 雷东钰

Application of UAV equipped with high resolution sensors in fine topographic mapping
Pingping CHENG, Kunpeng WU, Letian XIAO, Dongyu LEI
图7 利用坡度阈值法与R成像波段阈值法提取冰裂隙:正射影像(a),坡度(b),坡度大于60°的栅格分布(c),R成像波段(d),R成像波段灰度值小于50的栅格(e),图7(c)与7(e)栅格集合(f)
Fig. 7 Ice cliff extraction by slope threshold and Red band threshold: orthoimage (a), slope (b), the raster of slope larger than 60° (c), Red band (d), the raster of Red band smaller than 50 (e), the combination of slope threshold and Red band threshold (f)