基于高空间分辨率卫星影像的新疆阿拉尔市棉花与枣树分类

姬旭升,李旭,万泽福,姚霞,朱艳,程涛

Pixel-Based and Object-Oriented Classification of Jujube and Cotton Based on High Resolution Satellite Imagery over Alear, Xinjiang

JI XuSheng,LI Xu,WAN ZeFu,YAO Xia,ZHU Yan,CHENG Tao

表2 不同时期作物分类总体精度

Table 2 Overall accuracies of crop classification for different growth stages

获取时间 Date of image acquisition 光谱角制图SAM 支持向量机SVM 决策树DTs 随机森林RF 基于像素 Pixel-based 基于对象 Object-based 基于像素 Pixel-based 基于对象 Object-based 基于像素 Pixel-based 基于对像 Object-based 基于像素 Pixel-based 基于对象 Object-based OA K OA K OA K OA K OA K OA K OA K OA K 2016-05-10 87.47 0.81 64.62 0.47 78.35 0.67 90.25 0.85 90.93 0.86 92.12 0.88 91.27 0.87 93.52 0.90 2016-09-07 68.56 0.52 67.36 0.50 74.23 0.62 84.04 0.76 76.90 0.66 85.36 0.78 79.37 0.69 84.40 0.77 2016-10-08 78.30 0.67 74.21 0.61 77.53 0.67 88.88 0.83 80.13 0.70 88.77 0.83 82.14 0.73 83.82 0.78