利用无人机和面向对象技术快速提取田坎面积

Utilize UAV and Object-Oriented Technology to Quickly Extract the Area of the Field

快速、准确、低成本的获取田坎面积,对于土地整治区整治计划的安排和耕地保护具有重要的意义。本研究首先利用剖面曲率、坡度与田坎之间的分布关系,对影像进行分幅处理,对于地物信息不明显的石堰,对比其与主要区分对象耕地在可见光波段上反射率的不同,运用波段运算,增强其地物信息。其次结合基于规则的面向对象分类方法,构建田坎的分类规则,实现田坎的自动提取。以目视解译为实测面积进行精度评价后得出结论,利用无人机和面向对象分类方法快速提取田坎面积是可行的,提取面积精度高。

Fast,accurate and low-cost access to the rapid estimation of field ridge area is of great significance for the arrangement of the land improvement area and the protection of cultivated land.In this study,the distribution relationships between the curvature of the section,the slope and the field are exploited to process framingly the images ed by.For the sarcophagus with insignificant information of the ground object,we compare the difference with the reflectivity of the main arable land in the visible light band,and use the band operation to enhance the stone features of the stone.Secondly,based on the rule-based object-oriented classification method,the classification rules of field ridge are constructed to realize the automatic extraction of field ridge.After visually interpreting the measured area as the accuracy evaluation,it concludes that the object-oriented classification method based on the UAV image is feasible in extracting the area of the field quickly,and the extraction area is highly accurate.