基于轻小型无人机遥感技术的DEM修正研究
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摘要
本文选择铜川市耀州区土地整治项目作为典型实例,采用轻小型无人机遥感技术获取高分辨率影像,将面向对象的遥感解译方法应用到DEM的编辑中,提出基于地面高程和表面高程的批量修正DEM的方法。结果表明:应用轻小型无人机拍摄的航测成果来制作正射影像(DOM),其成果满足1∶1000成图精度;应用面向对象的影像分类解译方法,可以实现项目区地面要素的有效提取,将分类解译成果应用到DEM的编辑中,可以有效实现DEM的修正,高程点中误差满足一级检验精度。
This paper chooses the land consolidation projects of Tongchuan Yaozhou district as a typical example and uses the light and small UAV remote sensing technology to obtain high resolution images.By appling the object-oriented remote sensing interpretation method to DEM editing,a method of DEM revision based on ground elevation and surface elevation is proposed.The results show that:The DOM can meet the mapping accuracy of 1∶1 000 by using aerial measurement results taken by light and small UAV.By applying the object-oriented image classification and interpretation method,the effective extraction of ground elements in the project area can be realized.By applying results of classification interpretation to DEM editing,the DEM correction can be effectively realized,and the error in elevation points meets the first-order test accuracy.
This paper chooses the land consolidation projects of Tongchuan Yaozhou district as a typical example and uses the light and small UAV remote sensing technology to obtain high resolution images.By appling the object-oriented remote sensing interpretation method to DEM editing,a method of DEM revision based on ground elevation and surface elevation is proposed.The results show that:The DOM can meet the mapping accuracy of 1∶1 000 by using aerial measurement results taken by light and small UAV.By applying the object-oriented image classification and interpretation method,the effective extraction of ground elements in the project area can be realized.By applying results of classification interpretation to DEM editing,the DEM correction can be effectively realized,and the error in elevation points meets the first-order test accuracy.
引文
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[14]汪小钦,王苗苗,王绍强,等.基于可见光波段无人机遥感的植被信息提取[J].农业工程学报,2015,31(05):152-157,158-159.
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[2]李德仁,李明.无人机遥感系统的研究进展与应用前景[J].武汉大学学报(信息科学版),2014,39(05):505-513,540.
[3]张久龙,李淑梅,张利群,等.无人机航测系统在农村1∶500地籍测图中的应用探讨[J].测绘地理信息,2017,42(01):69-72,77.
[4]厉芳婷,闵天,尧志青.无人机航测技术对影像空三精度的影响[J].测绘通报,2017(S1):75-78.
[5]魏方震,武少丰,吉世鹏,等.天宝UX5无人机航测系统在公路勘察设计中的应用[J].测绘通报,2015(03):138-139.
[6]臧克,孙永华,李京,等.微型无人机遥感系统在汶川地震中的应用[J].自然灾害学报,2010,19(03):162-166.
[7]陈亚历.浅论高精度DEM的制作[J].测绘与空间地理信息,2015,38(05):151-152+154,157.
[8]马保东,吴立新,许志华.利用资源三号测绘卫星立体像对提取DEM及精度评价——以神东矿区大柳塔为例[J].测绘通报,2013(11):68-70,77.
[9]李涛,袁中朝,沈彪群,等.无人机影像匹配点云技术在道路测设中的应用[J].测绘通报,2018(06):156-159.
[10]姚富山.无人机影像匹配点云的处理与应用[D].郑州:解放军信息工程大学,2017.
[11]刘合凤,张云生,郭军,等.面向无人机影像自动空三的特征提取算法比较[J].测绘通报,2013(12):51-54,96.
[12]张雪华.基于无人机影像的面向对象建筑物震害提取研究[D].北京:中国地震局地震预测研究所,2017.
[13]魏嘉磊,王涛.面向对象的无人机正射影像土地利用详查研究[J].西部大开发(土地开发工程研究),2017,2(03):1-6.
[14]汪小钦,王苗苗,王绍强,等.基于可见光波段无人机遥感的植被信息提取[J].农业工程学报,2015,31(05):152-157,158-159.
[15]张锦明,游雄,万刚.DEM插值参数优选的试验研究[J].测绘学报,2014,43(02):178-185,192.