基于无人机影像阴影去除的苹果树冠层氮素含量遥感反演

李美炫,朱西存,白雪源,彭玉凤,田中宇,姜远茂

Remote Sensing Inversion of Nitrogen Content in Apple Canopy Based on Shadow Removal in UAV Multi-Spectral Remote Sensing Images

LI MeiXuan,ZHU XiCun,BAI XueYuan,PENG YuFeng,TIAN ZhongYu,JIANG YuanMao

表5 基于三种影像SVM模型反演结果

Table 5 Inversion results based on three image SVM models

影像类型 Images type 建模精度 Calibration accuracy 验证精度 Verification accuracy 决定系数 R2 相对分析误差 RPD 决定系数 R2 相对分析误差 RPD 原始多光谱影像 Original multispectral image 0.607 1.415 0.141 0.895 NSVI去除阴影后影像 Image after shadow removal based on NSVI 0.656 1.551 0.627 1.479 NDCSI去除阴影后影像 Image after shadow removal based on NDCSI 0.774 1.828 0.723 1.819