一种基于地形轮廓匹配的地理数据AR可视化新方法AR visualization of geospatial data based on silhouette matching
陈科,尹啸,陈晨,杨忠祥
摘要(Abstract):
地理数据的增强现实可视化技术,是地理信息科学可视化的一个重要的发展方向。作者针对结构特征明显的区域,初探了增强现实技术在地学可视化领域的应用。首先,分别提取视频影像数据的可视轮廓和DEM地形数据的水平轮廓,将两种地形轮廓匹配,实现地理数据的地理坐标系与视频影像的图像坐标系之间的配准,最后模拟了地理数据基于视频影像的AR可视化效果。与传统地理数据的可视化方式相比,AR可视化方式更简单、更自然、更直观、真实感更强。
关键词(KeyWords): 增强现实;可视化;地理数据;轮廓匹配
基金项目(Foundation):
作者(Author): 陈科,尹啸,陈晨,杨忠祥
DOI: 10.16251/j.cnki.1009-2307.2011.01.019
参考文献(References):
- [1]李德仁.关于地理信息理论的若干思考[J].武汉测绘科技大学学报,1997,22(2):93-95.
- [2]朱庆,林辉.数码城市地理信息系统[M].武汉:武汉大学出版社,2004.
- [3]Azuma R T.ASurvey of Augmented Reality[J].Teleo-perators and Virtual Environments,1997,6(4).
- [4]Hedley N R,Billinghurst M,Postner L,et al.Explora-tions in the use of augmented reality for geographic visu-alization[J].Teleoperators and Virtual Environments,2002,11(2):119-133.
- [5]Hedley N R,Billinghurst M,Postner L,et al.Explora-tions in the use of augmented reality for geographic visu-alization[J].Teleoperators and Virtual Environments,2002,11(2):119-133.
- [6]Azuma R,Baillot Y,Behringer R,et al.Recent Ad-vances in Augmented Reality[J].IEEE ComputerGraphics and Applications,2001,21(6):34-47.
- [7]Yuan ML,Ong S K,Nee AY C.Ageneralized registra-tion method for augmented reality systems[J].Com-puters&Graphics.2005,29:980-997.
- [8]Uenohara M,Kanade T.Vision-based object registrationfor real time image overlay[J].International Journal ofComputers in Biology and Medicine,1995,25(2).
- [9]刘秀坤,杜清运.增强现实系统中虚拟与现实信息空间视觉匹配的算法研究[J].测绘科学,2007,32(5).
- [10]查骏元,秦文虎,赵正旭.基于人工标志的增强现实技术研究[J].计算机工程与设计,2008,29(18).
- [11]贾娜,顾耀林.利用自然特征的增强现实注册算法[J].计算机应用,2008,28(4):1065-1069.
- [12]Behringer R.Improving Registration Precision ThroughVisual Horizon Silhouette Matching[C]//In 1st Int'lWorksho Pon Augmented Reality.San Francisco,Ca,Nov,1998:225-232.
- [13]Behringer R.Registration for Outdoor Augmented RealityApplications using Computer Vision Techniques and Hy-brid Sensors[J].In Proceedings IEEE Virtual Real-ity,Los Alamitos,Calif.,1999:244-251.