Volume 32 Issue 2
Feb.  2007
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JIANG Fan, WANG Zhiwei, ZHU Changqing, AN Min. Algorithms for Building TIN-based DEM Based on Terrain Feature Lines[J]. Geomatics and Information Science of Wuhan University, 2007, 32(2): 124-126.
Citation: JIANG Fan, WANG Zhiwei, ZHU Changqing, AN Min. Algorithms for Building TIN-based DEM Based on Terrain Feature Lines[J]. Geomatics and Information Science of Wuhan University, 2007, 32(2): 124-126.
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Algorithms for Building TIN-based DEM Based on Terrain Feature Lines

  • 1 Department of Military Acquisition,Military Enconomic Academy,122 Luojiadun,Wuhan 430035,China;2 Institute of Surveying and Mapping,Information Engineering University,66 Middle Longhai Road,Zhengzhou 450052,China

Funds: 国家973计划资助项目(2006CB701302);国家自然科学基金资助项目(40401052,40501058)
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  • Received Date: November 08, 2006
  • Revised Date: November 08, 2006
  • Published Date: February 04, 2007
    Graphical Abstract
    • Abstract
  • For the plane triangle in building irregularly triangle net(TIN)of DEM,some new algorithms are put forward to eliminate plane triangle.The algorithms include auto-adding characteristic points and approximating important characteristic points by Lagrange interpo-lation polynomial.On the other hand,the practicability and validity of the algorithms are validated by contours reconstructed.The experiments show that the proposed algorithm can eliminate plane triangle and optimize the structure of TIN.
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