基于连续统去除法的水生植物提取及其时空变化分析——以官厅水库库区为例

汪星,宫兆宁,井然,张磊,金点点

Extraction of aquatic plants based on continuous removal method and analysis of its temporal and spatial changes—A case study of Guanting Reservoir

Xing WANG,Zhao-Ning GONG,Ran JING,Lei ZHANG,Dian-Dian JIN

表4 分类精度验证

Table 4 Classification accuracy test

地物类型 Category 水体 Water body 沉水植物 Submerged plants 浮水植物 Floating plants 挺水植物 Emergent plants 水体 Water body 820 312 186 15 沉水植物 Submerged plants 47 2969 9 86 浮水植物 Floating plants 11 0 76 8 挺水植物 Emergent plants 39 14 1 731 总体精度 Overall accuracy 86.33% Kappa系数 Kappa coefficient 0.76