基于不同分辨率遥感影像自动提取切沟的精度分析和转换模型
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张琪,张光辉,张岩,王佳希,余双武
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Accuracy Analysis and Conversion Model of Gully Automatic Extraction based on Remote Sensing Images with Different Resolutions
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Qi Zhang,Guanhui Zhang,Yan Zhang,Jiaxi Wang,Shuangwu Yu
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表4 切沟形态参数统计结果
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Table 4 Statistical results of gully morphological parameters
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参数 | 影像数据 | 均值/m | 中值/m | 最大值/m | 最小值/m | 平均绝对误差 | 平均百分误差/% |
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沟长L/m | 无人机 | 126.18 | 109.05 | 317.14 | 22.60 | / | / | Google | 124.44 | 106.73 | 317.41 | 20.23 | 4.28 | 5.35 | GF-1(2 m) | 119.79 | 99.49 | 333.04 | 20.82 | 10.82 | 9.36 | GF-1(8 m) | 102.61 | 88.24 | 289.32 | 19.42 | 23.96 | 18.82 | 面积A/m2 | 无人机 | 6 159.90 | 5 126.79 | 19 576.97 | 436.91 | / | / | Google | 6 160.83 | 5 139.55 | 19 127.49 | 490.98 | 368.61 | 6.81 | GF-1(2 m) | 5 613.12 | 4 822.91 | 14 876.00 | 336.00 | 799.00 | 12.25 | GF-1(8 m) | 4 320.01 | 3 024.05 | 13 964.34 | 358.14 | 1 853.21 | 27.62 | 沟宽W/m | 无人机 | 42.86 | 44.07 | 72.86 | 19.33 | / | / | Google | 43.01 | 44.51 | 67.88 | 20.21 | 2.26 | 5.22 | GF-1(2 m) | 42.59 | 43.27 | 67.72 | 16.13 | 5.33 | 13.40 | GF-1(8 m) | 37.42 | 37.32 | 62.99 | 16.80 | 8.68 | 18.93 |
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