测绘学报 ›› 2015, Vol. 44 ›› Issue (9): 1036-1041.doi: 10.11947/j.AGCS.2015.20140662

• 中国测绘地理信息学会2014年青年优秀论文 • 上一篇    下一篇

侧视地图中建筑物轮廓线提取的三维城市模型法

朱园媛1, 朱庆1,2, 张叶廷1, 彭明军3, 高山3   

  1. 1. 武汉大学测绘遥感信息工程国家重点实验室, 湖北 武汉 430079;
    2. 西南交通大学地球科学与环境工程学院, 四川 成都 611756;
    3. 武汉市国土资源和规划信息中心, 湖北 武汉 430014
  • 收稿日期:2014-12-15 修回日期:2015-05-15 出版日期:2015-09-24 发布日期:2015-09-24
  • 作者简介:朱园媛(1989—),女,硕士生,主要研究方向为三维地理信息系统。E-mail:Zhuyuanyuan1989@whu.edu.cn
  • 基金资助:
    数字城市联合实验室项目(2012SL05);国家基础测绘科技项目(201412010)

Automatic Extraction of Contours of Buildings on Oblique View Maps Based on 3D City Models

ZHU Yuanyuan1, ZHU Qing1,2, ZHANG Yeting1, PENG Mingjun3, GAO Shan3   

  1. 1. State Key Laboratory of Information Engineering in Surveying, Mapping and Remote Sensing, Wuhan University, Wuhan 430079, China;
    2. Faculty of Geosciences and Environmental Engineering, Southwest Jiaotong University, Chengdu 611756, China;
    3. Wuhan Land Resources and Planning Bureau, Wuhan 430079, China
  • Received:2014-12-15 Revised:2015-05-15 Online:2015-09-24 Published:2015-09-24
  • Supported by:
    Project Supported by Associated Laboratory of Digital City (No.2012SL05) Project Supported by Special Scientific Research Fund of Public Welfare Profession on Surveying, Mapping and GeoInformation(No.201412010)

摘要: 针对城市侧视地图上建筑物轮廓线主要依靠人工交互提取,成本高昂、效率低下且精细度和准确度有限的问题,提出了一种任意视角侧视地图中建筑物轮廓线的自动提取方法。采用深度缓冲区分割算法获取单个建筑物对象的颜色缓冲区,顾及了存在建筑群的情况和建筑物密集区域的遮挡问题,再基于颜色缓冲区追踪建筑物轮廓线。为了保持遮挡一致性且便于匹配提取出的矢量轮廓线与栅格侧视地图,本文还提出了基于投影空间分块加载三维城市模型的方法。最后,以武汉市典型三维城市模型数据为例,证明了该方法的有效性和可靠性。

关键词: 建筑物轮廓线, 三维城市模型, 侧视地图, 深度缓冲区, 颜色缓冲区

Abstract: Aiming to deal with the problem that manual extraction of contours of buildings on oblique view maps are expensive and ineffective with low accuracy and coarse detail, we present a method of automatic extraction of contours buildings on oblique view maps which based on 3D city models. We employ depth-buffers to obtain a building object's color-buffers concerning the occlusion blocked by other buildings and the existence of groups of buildings, and then we trace building contours based on color-buffers. And in order to keep the occlusion consistency and match the traced contours with the map, we propose loading 3D city models by block on projection plane. Finally, the validity and feasibility of this method are proved through the experiments on 3D city models of Wuhan.

Key words: building contours, 3D city models, oblique view maps, depth buffer, color buffer

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