Study on High Resolution Representation of Terraces in Shanxi Loess Plateau Area
A new elevation points sampling method,namely TIN-based Sampling Method (TSM) and a new visual method called Elevation Addition Method (EAM),are put forth for representing the typical terraces in Shanxi loess plateau area.The DEM Feature Points and Lines Classification (DEPLC) put forth by the authors in 2007 is perfected for depicting the main path in the study area.The EAM is used to visualize the terraces and the path in the study area.406 key elevation points and 15 feature constrained lines sampled by this method are used to construct CD-TINs which can depict the terraces and path correctly and effectively.Our case study shows that the new sampling method called TSM is reasonable and feasible.The complicated micro-terrains like terraces and path can be represented with high resolution and high efficiency successfully by use of the perfected DEPLC,TSM and CD-TINs.And both the terraces and the main path are visualized very well by use of EAM even when the terrace height is not more than 1m.
DEM D-TIN high resolution terrace micro-terrain visualization Loess Plateau
Weidong Zhao Guo’an Tang Lei Ma
Key Laboratory of Virtual Geographic Environment (Nanjing Normal niversity),Ministry of Education,1 Key Laboratory of Virtual Geographic Environment (Nanjing Normal University),Ministry of Education,1 Dept.Of Geographic Information Science,School of Resources & Environmental Engineering,Hefei Univers
国际会议
第16届国际地理信息科学与技术大会(16th International Conference on GeoInformatics and the Joint Conference)
广州
英文
2008-06-28（万方平台首次上网日期，不代表论文的发表时间）