| Technology and Methodology |
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Single image geo-spatial mapping |
| ZHANG Xingguo1,2, LIU Xuejun1 |
1. Key Laboratory of Virtual Geographic Environment, Nanjing Normal University, Ministry of Education, Nanjing 210046, China;
2. College of Urban and Environmental Science, Xinyang Normal University, Xinyang 464000, China |
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Abstract Single image geo-spatial mapping is very important and the research can promote the thorough application of the single image in GIS. Firstly, the concept of single image geo-spatial mapping is briefly introduced. Then, a method is proposed. Its main steps are as follows: A large quantity of images should be collected and the principal optic axis is approximately horizontal. Then each image is divided into many super-pixels, and lots of features are selected such as color, texture and location. All super-pixels are calculated one by one and the classes include ground and no ground. Through training, a decision tree can be obtained.On the basis of the horizontal constraint as well as the center coordinate of the camera and azimuth, the image coordinate of the ground area can be transferred into the projected coordinate.Through shooting many images on a university campus, the method is verified. The mapping accuracy is analyzed. The result is good. The study is useful for single images application in GIS.
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| Keywords
Himalayas
large-scale debris flow
remote sensing
spatial distribution
development characteristics
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Issue Date: 08 January 2014
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| [1] 闾国年, 刘学军, 吴勇.发展影视GIS, 推进GIS社会化进程——兼论GIS中的"世界"观察与表达方式[C]//《测绘通报》测绘科学前沿技术论坛论文集.北京:《测绘通报》编辑部, 2008. Lv G N, Liu X J, Wu Y.Develop image-video GIS, promote the socialization process:Discuss the style of viewing and expressing the world[C]//Bulletin of Surveying and Mapping, Proceedings of Surveying Science Frontier.Beijing:Bulktin of Surveying and Mapping, 2008.[2] 孔云峰.地理视频数据模型及其应用开发研究[J].地理与地理信息科学, 2009, 25(5):12-16. Kong Y F.Research on the geoVideo data model and its application development[J].Geography and Geo-Information Science, 2009, 25(5):12-16.[3] Hoiem D, Efros A A, Hebert M.Automatic photo pop-up[C]//Proceedings of the ACM SIGGRAPH.New York:ACM, 2005:577-584.[4] Saxena A, Chung S, Ng Y A.Learning depth from single monocular images[C]//NIPS 18, 2005.[5] Snavely N, Seitz S M, Szeliski R.Photo tourism:Exploring photo collections in 3D[C]//Proceedings of the ACM SIGGRAPH.New York:ACM, 2006:835-846.[6] Yasutaka Furukawa, Jean Ponce.Accurate, dense, and robust multi-view stereopsis[C]//Proceedings of IEEE Conference on Computer Vision and Pattern Recognition.Minneapolics:IEEE, 2007:1-8.[7] 刘学军, 王美珍, 甄艳, 等.单幅图像几何量测研究进展[J].武汉大学:信息科学版, 2011, 36(8):941-947. Liu X J, Wang M Z, Zhen Y, et al.Geometric measurement based on single image:A survey[J].Geomatics and Information Science of Wuhan University, 2011, 36(8):941-947.[8] 孙宇阳.基于单幅图像的三维重建技术综述[J].北方工业大学学报, 2011, 23(1):9-13. Sun Y Y.A survey of 3D reconstruction based on single image[J].Journal of North China University of Technology, 2011, 23(1):9-13.[9] Felzenszwalb P, Huttenlocher D.Efficient graph-based image segmentation[J].Intemational Journal of Computer Vision, 2004, 59(2):167-181.[10] 韩艳丽.单目视觉建筑物三维建模方法的研究[D].上海:同济大学, 2006. Han Y L.Researching on approaches of architecture's 3D reconstruction based on a single vision[D].Shanghai:Tongji University, 2006. |
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2014,
Vol. 26
