一种实用型无人机三维模型重建方法
|
摘要
针对无人机三维模型无法单体化及难以构建实用模型的问题,文章研究了一种实用型无人机三维模型重建方法。首先,利用无人机倾斜摄影测量技术获取研究区5个角度高清数据,通过空中三角测量、加密点云、三维重建、产品输出等智能化技术处理生成了DOM、DSM、三维模型;其次,研究无人机DOM(可见光波段)的特性,利用面向对象分类方法提取了研究区地类信息;最后,借助Skyline平台,根据高度属性将提取的地类信息转换为2.5维矢量,使之与三维模型无偏差叠加,构建实用型无人机三维模型。结果表明:三维模型外观逼真,具有查询、检索、定位等实用功能,有效地改变了无人机三维模型仅有漫游的现象,同时研究的技术方法对于构建三维智慧城市具有重大意义。
In order to solve the problem that the UAV 3D model could not be monolithic and it is difficult to construct a practical model,a practical UAV 3D reconstruction method was studied in this paper. By using the vector data function to improve the practicability of UAV 3D model.Firstly,we used UAV tilt photogrammetry technology to obtain five angles of high-definition data in the study area,and got the DOM,DSM,3D model results by aerial triangulation,encryption point cloud,3D reconstruction,product output,etc. key steps in processing. Secondly,the characteristics of the drone DOM( visible light band) was studied,and object-oriented classification method was used to extract the geospatial information of the study area.Based on the Skyline platform,the extracted geospatial information was transformed into a 2.5-dimensional vector according to the height attribute so as to be superimposed with the 3D model to construct a 3D model of a practical UAV.The results showed that the 3D model had realistic appearance and practical functions such as searching,searching and positioning,effectively changing the phenomenon that the UAV only had roaming. At the same time,the research methods are of great significance for building a 3D smart city.
In order to solve the problem that the UAV 3D model could not be monolithic and it is difficult to construct a practical model,a practical UAV 3D reconstruction method was studied in this paper. By using the vector data function to improve the practicability of UAV 3D model.Firstly,we used UAV tilt photogrammetry technology to obtain five angles of high-definition data in the study area,and got the DOM,DSM,3D model results by aerial triangulation,encryption point cloud,3D reconstruction,product output,etc. key steps in processing. Secondly,the characteristics of the drone DOM( visible light band) was studied,and object-oriented classification method was used to extract the geospatial information of the study area.Based on the Skyline platform,the extracted geospatial information was transformed into a 2.5-dimensional vector according to the height attribute so as to be superimposed with the 3D model to construct a 3D model of a practical UAV.The results showed that the 3D model had realistic appearance and practical functions such as searching,searching and positioning,effectively changing the phenomenon that the UAV only had roaming. At the same time,the research methods are of great significance for building a 3D smart city.
引文
[1]王琳,吴正鹏,姜兴钰,等.无人机倾斜摄影技术在三维城市建模中的应用[J].测绘与空间地理信息,2015,38(12):30-32.
[2]孙宏伟.基于倾斜摄影测量技术的三维数字城市建模[J].现代测绘,2014,37(1):18-21.
[3]李莹,林宗坚,苏国中.多视影像的城市实景三维生产关键技术[J].遥感信息,2017,32(1):35-39.
[4]田野,向宇,高峰,等.利用Pictometry倾斜摄影技术进行全自动快速三维实景城市生产——以常州市三维实景城市生产为例[J].测绘通报,2013(2):59-62,66.
[5]余虹亮.基于倾斜摄影的城市维重建方法研究[D].南宁:广西大学,2016.
[6]杨玲,阮心玲.模型导向的建筑物半自动三维重建[J].遥感信息,2017,32(3):115-122.
[7]孙亮,夏永华.基于无人机倾斜摄影技术测绘大比例尺地形图的可行性研究[J].价值工程,2017(8):209-212.
[8]柳佳佳,葛文,薛宁.二维和三维电子地图的空间认知差异研究[J].海洋测绘,2014,34(2):76-79.
[9]李镇洲,张学之.基于倾斜摄影测量技术快速建立城市3维模型研究[J].测绘与空间地理信息,2012,35(4):117-119.
[10]张文博.无人机航测技术在土地综合整治中的应用研究[D].湖南:长沙理工大学,2013.
[11]谢国雪.无人机倾斜摄影系统的三维可视化应用研究[D].南宁:广西师范学院,2016.
[2]孙宏伟.基于倾斜摄影测量技术的三维数字城市建模[J].现代测绘,2014,37(1):18-21.
[3]李莹,林宗坚,苏国中.多视影像的城市实景三维生产关键技术[J].遥感信息,2017,32(1):35-39.
[4]田野,向宇,高峰,等.利用Pictometry倾斜摄影技术进行全自动快速三维实景城市生产——以常州市三维实景城市生产为例[J].测绘通报,2013(2):59-62,66.
[5]余虹亮.基于倾斜摄影的城市维重建方法研究[D].南宁:广西大学,2016.
[6]杨玲,阮心玲.模型导向的建筑物半自动三维重建[J].遥感信息,2017,32(3):115-122.
[7]孙亮,夏永华.基于无人机倾斜摄影技术测绘大比例尺地形图的可行性研究[J].价值工程,2017(8):209-212.
[8]柳佳佳,葛文,薛宁.二维和三维电子地图的空间认知差异研究[J].海洋测绘,2014,34(2):76-79.
[9]李镇洲,张学之.基于倾斜摄影测量技术快速建立城市3维模型研究[J].测绘与空间地理信息,2012,35(4):117-119.
[10]张文博.无人机航测技术在土地综合整治中的应用研究[D].湖南:长沙理工大学,2013.
[11]谢国雪.无人机倾斜摄影系统的三维可视化应用研究[D].南宁:广西师范学院,2016.