基于客观阈值与随机森林Gini指标的水体遥感指数对比
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王一帆,徐涵秋
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Comparison of Remote Sensing Water Indices based on Objective Threshold Value and the Random Forest Gini Coefficient
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Yifan Wang,Hanqiu Xu
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表4 实验区各水体指数提取精度(0阈值)
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Table 4 Accuracy assessment for water feature extraction by the three indices using 0 threshold in test areas
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| 精度 | AWEI | MNDWI | WI2015 |
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福州L8 | 漏判率/% | 20.43 | 15.59 | 16.13 | 误判率/% | 3.90 | 5.45 | 4.88 | 总精度/% | 90.50 | 91.79 | 91.79 | Kappa | 0.797 | 0.826 2 | 0.825 9 | 福州S2A | 漏判率/% | 6.45 | 6.45 | 3.76 | 误判率/% | 20.55 | 16.35 | 20.09 | 总精度% | 87.69 | 90.06 | 88.77 | Kappa | 0.751 | 0.797 | 0.774 | 弗伦奇岛L8 | 漏判率/% | 14.06 | 9.06 | 8.75 | 误判率/% | 1.43 | 3.00 | 3.31 | 总精度/% | 91.01 | 93.03 | 93.03 | Kappa | 0.819 | 0.858 1 | 0.857 9 | 弗伦奇岛S2A | 漏判率/% | 16.41 | 11.15 | 7.74 | 误判率/% | 2.53 | 3.69 | 4.18 | 总精度/% | 89.05 | 91.42 | 93.07 | Kappa | 0.781 | 0.826 | 0.858 | 尼玛县L8 | 漏判率/% | 18.63 | 16.18 | 17.65 | 误判率/% | 2.92 | 3.39 | 12.04 | 总精度/% | 92.10 | 92.83 | 89.15 | Kappa | 0.826 | 0.843 | 0.766 | 均值 | 漏判率/% | 15.20 | 11.69 | 10.81 | 误判率/% | 6.27 | 6.38 | 8.90 | 总精度/% | 90.07 | 91.83 | 91.16 | Kappa | 0.795 | 0.830 | 0.816 |
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