基于Sentinel-1双极化数据改进水体提取的Otsu算法

冯崎,王琦,黄海兰,王征强

Improved Otsu Algorithm for Water Extraction based on Sentinel-1 Dual-polarization Data

Qi Feng,Qi Wang,Hailan Huang,Zhengqiang Wang

表1 不同方法提取的水体精度评价表

Table1 Accuracy evalution table of water extracted by different methods

样区 P/%P R/% F1/% 本文方法 Otsu 本文方法 Otsu 本文方法 Otsu VV VH VV VH VV VH 样区1 68.47 6.92 7.24 70.12 92.12 87.57 69.28 12.95 13.37 样区2 87.75 17.35 51.91 75.45 88.88 84.70 81.14 29.04 64.37 样区3 82.05 46.11 52.98 81.44 87.00 88.28 81.74 60.28 66.22 样区4 90.24 68.40 85.25 84.50 88.49 88.30 87.28 77.16 86.75 样区5 94.73 90.57 88.72 90.80 91.95 94.20 92.72 91.25 91.37 样区6 97.80 95.88 95.88 95.44 96.25 96.83 96.60 96.07 96.35