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  • 软件名称:基于Sentinel-2的闪电河流域农作物分类研究
  • 软件大小: 0.00 B
  • 软件评级: ★★★
  • 开 发 商: 尹燕旻,贾立
  • 软件来源: 《遥感技术与应用》
  • 解压密码:www.gissky.net

资源简介

摘要: 以内蒙古闪电河流域为研究区,基于Sentinel2光学遥感影像结合随机森林和支持向量机算法,采用3种方案:基于像元的分类方法、面向对象的分类方法及改进的基于像元分类与面向对象分割相结合的集成方法,对研究区内的农作物进行精细提取。结果表明:①基于随机森林采用基于像元的方法进行分类,所有地类的总体精度为97.8%,Kappa系数为0.974,表明随机森林算法可以有效地进行农作物提取。②改进的基于像元分类与面向对象分割相结合的集成方法分类效果较好,所有地类的总体精度为96.4%,Kappa系数为0.957,该方法充分结合了基于像元和面向对象分类方法的优点,可有效提升闪电河流域的作物分类效果。 关键词: Sentinel-2;  农作物分类;  面向对象;  基于像元;  随机森林;  RF;  SVM     Abstract: In this study, Sentinel-2 data combined with Random Forest method (RF) and Support Vector Machine method (SVM) were used to extract crop information in the Shandian River Basin in Inner Mongolia. Three schemes are proposed: pixel-based classification algorithm, object-based classification algorithm and improved integration algorithm based on pixel-based classification and object-based segmentation. Results are as follows: (1) pixel-based classification with RF gets the best extraction accuracy, with an overall accuracy up to 97.8% and Kappa coefficient of 0.974. This result shows that RF has evident advantages in crop extraction. (2) The improved integration algorithm also has good extraction accuracy. The overall accuracy is 96.4%, and kappa coefficient is 0.957. This method fully combines the advantages of pixel-based and object-based classification methods, which effectively improves the crop classification effect in Shandian River region.

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