ICC Programming
Shape
Yi Zheng, Master
student
Nanjing Normal University
Ling Zhang, PhD
Postdoctor
Nanjing Normal University
Eric Guilbert, PhD
Associate professor
Laval University
Yi Long
Nanjing Normal University
Guillaume Touya, PhD
Senior Researcher
IGN France, LASTIG, COGIT team
contours are important data to delineate the landform on a map. A contour tree provides an object-oriented description of landforms and can be used to enrich the topological information. The traditional contour tree is used to store topological relationships between contours in a hierarchical structure and allows for the identification of em-inences and depressions as sets of nested contours. This research proposes an improved contour tree so-called spatial contour tree that contains not only the topological but also the geometric information. It can be regarded as a terrain skeleton in 3-dimention, and it is established based on the spatial nodes of contours which have the latitude, longi-tude and elevation information. The spatial contour tree is built by connecting spatial nodes from low to high eleva-tion for a positive landform, and from high to low elevation for a negative landform to form a hierarchical structure. The connection between two spatial nodes can provide the real distance and direction as a Euclidean vector in 3-dimention. In this paper, the construction method is tested in the experiment, and the results are discussed. The pro-posed hierarchical structure is in 3-demintion and can show the skeleton inside a terrain. The structure, where all nodes have geo-information, can be used to distinguish different landforms and applied for contour generalization with consideration of geographic characteristics.
student
Nanjing Normal University
Yi Zheng is a master degree candidate in the Department of Cartography and GIS at Nanjing Normal University of China since 2015. His research interests lie in the area of map generalization and geographic information system. His recent work is mainly about map generalization based on topographical information and his paper presents some of his work in this respect.
4602.1 - An improved spatial contour tree constructed method
Tuesday, July 4
2:50 PM – 3:10 PM
Postdoctor
Nanjing Normal University
Ling Zhang is a post-doctoral researcher in the Department of Cartography and GIS at Nanjing Normal University of China since 2014. He received his Ph.D. degree in the Department of Land Surveying and Geo-Informatics at the Hong Kong Polytechnic University on 2014. His research interests lie in the area of map generalisation, digital mapping and spatial analysis.
4602.1 - An improved spatial contour tree constructed method
Tuesday, July 4
2:50 PM – 3:10 PM
5107.1 - Coordinate references for the indoor/outdoor seamless positioning
Wednesday, July 5
8:30 AM – 8:50 AM
Associate professor
Laval University
Eric Guilbert holds a PhD in computer science and is an associate professor in the Department of Geomatic Sciences at Laval University, Québec, Canada. He is also chair of the ISPRS Working Group IV/1 on Multi-dimensional modelling. His research interests focus on geographical information system, spatial data modelling, digital terrain modelling and cartographic generalisation.
4602.1 - An improved spatial contour tree constructed method
Tuesday, July 4
2:50 PM – 3:10 PM
Nanjing Normal University
Yi Long is a professor in the Department of Cartography and GIS at Nanjing Normal University of China since 2004. He is the vice-chair of commission on Maps and the Internet. His research interests are in the aspect of cartography, automatic map generalisation, indoor/outdoor positioning and intelligent tourism.
4602.1 - An improved spatial contour tree constructed method
Tuesday, July 4
2:50 PM – 3:10 PM
5107.1 - Coordinate references for the indoor/outdoor seamless positioning
Wednesday, July 5
8:30 AM – 8:50 AM
Senior Researcher
IGN France, LASTIG, COGIT team
Guillaume Touya is a senior researcher at the LASTIG, COGIT team, IGN France (the French mapping agency). He holds a PhD in GI science from Paris-Est University. His research interests focus on automated cartography, map generalization and volunteered geographic information. He currently leads the MapMuxing (https://mapmuxing .ign.fr) research project.
Tuesday, July 4
1:50 PM – 2:10 PM
4602.1 - An improved spatial contour tree constructed method
Tuesday, July 4
2:50 PM – 3:10 PM
4602.2 - An automated shoreline extraction approach using RASAT MS and SENTINEL 1A SAR images
Tuesday, July 4
3:10 PM – 3:30 PM
4602.3 - An Area Compactness Metric considering Spatial Context and Topology
Tuesday, July 4
3:30 PM – 3:50 PM
6104.1 - Experiments to Distribute Map Generalization Processes
Thursday, July 6
8:30 AM – 8:50 AM
6104.3 - DIOGEN, a multi-level oriented model for cartographic generalisation
Thursday, July 6
9:10 AM – 9:30 AM
6209.2 - Designing typefaces for maps. A protocol of tests.
Thursday, July 6
10:50 AM – 11:10 AM
6209.3 - RJMCMC based Text Placement to Optimize Label Placement and Quantity
Thursday, July 6
11:10 AM – 11:30 AM
6604.1 - Alternative Transitions Between Existing Representations in Multi-Scale Maps
Thursday, July 6
2:50 PM – 3:10 PM
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