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国土资源遥感  2016, Vol. 28 Issue (4): 43-48    DOI: 10.6046/gtzyyg.2016.04.07
  技术方法 本期目录 | 过刊浏览 | 高级检索 |
顾及几何及颜色信息的倾斜影像立面点云提取
周行行, 邹峥嵘, 张云生, 郑特
中南大学地球科学与信息物理学院, 长沙 410083
Facade extraction from oblique point cloud considering geometrical and color information
ZHOU Hanghang, ZOU Zhengrong, ZHANG Yunsheng, ZHENG Te
School of Geosciences and Geomatics, Central South University, Changsha 410083, China
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摘要 

针对建筑物立面自动提取难题,根据多角度航空倾斜影像密集匹配生成的三维点云,提出了一种顾及点云几何及颜色信息的建筑物立面点云自动提取方法。首先通过计算三维点云中各点对应的法向量,并根据法向量方向进行粗略的分割;然后根据各点的颜色信息剔除植被点云;在此基础上剔除少量地面点,通过基于聚类分析的后处理获取立面点云。利用2组数据进行了实验,结果表明,本文方法能够自动提取出建筑物的立面,立面的完整性和正确性都大于90%,准确率大于83%,为后续立面的重建提供了基础。

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关键词 矿山遥感监测成果编制成果检查AE插件XSD    
Abstract

Aimed at tackling the difficulty in extracting facade from point cloud derived from dense matching of multi-angle airborne oblique images, this paper proposes a facade extraction method considering point cloud geometrical and color information. This method calculates normal vector for each point in the point cloud, and then uses the orientation of the normal vector for initial facade segmentation. After that, color information is used to remove point cloud about vegetation. On the basis of the initial result, the remaining ground points are removed. Finally, clustering analysis is used to refine the result, and facade point cloud can be obtained. Two groups of data sets are used for experiments, and the results reveal that the proposed method can automatically extract the facade of the building, with the completeness and correctness up to 90%, and the accuracy is more than 83%, thus providing the basis for the subsequent facade reconstruction.

Key wordsmine remote sensing monitoring    production data compilation    quality checking    ArcGIS engine(AE)    plug-in    XML schema definition(XSD)
收稿日期: 2015-05-15      出版日期: 2016-10-20
:  P208  
基金资助:

国家“863”计划资助项目“统一时空体系下的城市多种类型空间信息接入与加载的规范”(编号:2013AA122301)、国家自然科学基金“自适应三角形约束的多角度影像多基元匹配方法”(编号:41201472)及湖南省高校创新平台开放基金项目“面向灾害应急响应的无人机影像快速处理方法”(编号:12K009)共同资助。

作者简介: 周行行(1990-),女,硕士研究生,主要从事倾斜影像立面提取方面的研究。Email:zhh1990926@163.com。
引用本文:   
周行行, 邹峥嵘, 张云生, 郑特. 顾及几何及颜色信息的倾斜影像立面点云提取[J]. 国土资源遥感, 2016, 28(4): 43-48.
ZHOU Hanghang, ZOU Zhengrong, ZHANG Yunsheng, ZHENG Te. Facade extraction from oblique point cloud considering geometrical and color information. REMOTE SENSING FOR LAND & RESOURCES, 2016, 28(4): 43-48.
链接本文:  
https://www.gtzyyg.com/CN/10.6046/gtzyyg.2016.04.07      或      https://www.gtzyyg.com/CN/Y2016/V28/I4/43

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