基于无人机遥感影像的芒果树株数快速提取  

Rapid extraction of mango tree number based on UAV remote sensing images

作　　者：张利平[1] 郑春雨 ZHANG Liping;ZHENG Chunyu(College of Surveying and Mapping Engineering,Heilongjiang Institute of Technology,Harbin 150050,China;Heilongjiang Surveying and Mapping Product Quality Supervision and Inspection Station of the Ministry of Natural Resources,Harbin 150081,China)

机构地区：[1]黑龙江工程学院测绘工程学院,哈尔滨150050 [2]自然资源部黑龙江测绘产品质量监督检验站,哈尔滨150081

出　　处：《测绘工程》2024年第4期60-67,共8页Engineering of Surveying and Mapping

摘　　要：快速准确获取芒果树种植数量,对果园产量估算、芒果树长势监测以及果树管理具有重要意义。针对传统方法很难实现大范围芒果树株数精确提取的问题,文中提出了基于无人机遥感影像提取株数的方法。以三亚市崖州区某芒果树种植园为研究区,利用无人机影像生成植被指数图,基于植被指数图、DSM和经过深度学习获取CAM图像三种方法,提取8个样本区芒果树的株数。研究表明,这三种方法的株数提取准确率、召回率、交并比都超过了97%,96%,94%;基于DSM的株数提取召回率最高,达到98.55%,遗漏的株数最少。文中提出DSM和DOM相结合的株数提取方法,去除了基于DSM非植被区提取的错误树株,将株数提取交并比提高了2.37%,达到98.30%,能够快速准确获取芒果树株,为芒果树及其他果树果园管理中的深度应用提供依据。Quickly and accurately obtaining the number of mango tree is of great significance to estimate the yield of fruit trees,monitor mango tree growth,and manage fruit tree.In response to the difficulty of accurately extracting the number of mango trees on a large area using traditional methods,this paper proposes a method based on unmanned aerial vehicle remote sensing images to extract the number of trees.This article takes a mango tree plantation in Yazhou District,Sanya City as the research area.We used UAV images to generate vegetation index maps.Based on vegetation index maps,DSM,and CAM images obtained through deep learning,three methods were used to extract the number of mango trees in eight sample areas.Research has shown that the accuracy,recall,and Intersection over Union of plant number extraction using these three methods have all exceeded 97%,96%,and 94%,respectively.The recall rate of plant number extraction based on DSM is the highest,reaching 98.55%,with the least number of missed plants.This article proposes a plant number extraction method combining DSM and DOM,which removes erroneous trees extracted from non vegetation areas in plants based on DSM extraction.Intersection over Union of plant number extraction is increased by 2.37%,reaching 98.30%.It can quickly and accurately obtain mango trees,providing a basis for the deep application of mango trees and other fruit orchard management.

关 键 词：无人机遥感 数字正射影像 数字表面模型 可见光植被指数 深度学习 

分 类 号：P231[天文地球—摄影测量与遥感]