GEE支持下的河南省冬小麦面积提取及长势监测
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周珂,柳乐,张俨娜,苗茹,杨阳
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Area Extraction and Growth Monitoring of Winter Wheat in Henan Province Supported by Google Earth Engine
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ZHOU Ke,LIU Le,ZHANG YanNa,MIAO Ru,YANG Yang
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表6 研究区冬小麦基于混淆矩阵提取精度比较
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Table 6 Comparison of extraction accuracy of winter wheat based on confusion matrix in the study area
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特征
Feature | 年份
Year | 总体精度
OA (%) | Kappa系数
Kappa | 冬小麦分类精度
Classification accuracy of winter wheat (%) | 光谱+地形+纹理+NDVI
Spectrum + topography + texture + NDVI | 2017-2018 | 93.3 | 0.862 | 93.5 | | 2018-2019 | 94.8 | 0.891 | 95.1 | | 2019-2020 | 94.7 | 0.892 | 94.5 | 光谱+地形+纹理+NDVI+NDVI增幅
Spectrum + topography + texture + NDVI+NDVIincrease | 2017-2018 | 94.8 | 0.893 | 94.6 | | 2018-2019 | 95.6 | 0.921 | 95.3 | | 2019-2020 | 95.8 | 0.913 | 95.9 |
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