Simultaneous Spline Approximation and Topographic Analysis for Lidar Elevation Data in Open-Source GIS
- 24 October 2005
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Geoscience and Remote Sensing Letters
- Vol. 2 (4), 375-379
- https://doi.org/10.1109/lgrs.2005.848533
Abstract
Application of a spline approximation method to computation and analysis of lidar-based digital elevation models is investigated to determine its accuracy and capability to create surfaces at different levels of detail. Quadtree segmentation that adapts to the spatial heterogeneity of data points makes the method feasible for large datasets. The results demonstrate the importance of smoothing for the surface accuracy and noise reduction. A tension parameter is effective for tuning the level of detail in the elevation surface. Simultaneous computation of topographic parameters is applied to extraction of sand dunes' features for assessment of dune migration and beach erosion.Keywords
This publication has 9 references indexed in Scilit:
- Geospatial analysis of a coastal sand dune field evolution: Jockey's Ridge, North CarolinaGeomorphology, 2005
- Identification and Analysis of Airborne Laser Swath Mapping Data in a Novel Feature SpaceIEEE Geoscience and Remote Sensing Letters, 2004
- Quantifying Rapid Changes in Coastal Topography using Modern Mapping Techniques and Geographic Information SystemEnvironmental & Engineering Geoscience, 2004
- Utilizing DEMs derived from LIDAR data to analyze morphologic change in the North Carolina coastlineRemote Sensing of Environment, 2003
- Spatial characterization, resolution, and volumetric change of coastal dunes using airborne LIDAR: Cape Hatteras, North CarolinaGeomorphology, 2002
- Multivariate Interpolation of Precipitation Using Regularized Spline with TensionTransactions in GIS, 2002
- Interpolation by regularized spline with tension: II. Application to terrain modeling and surface geometry analysisMathematical Geology, 1993
- Interpolation by regularized spline with tension: I. Theory and implementationMathematical Geology, 1993
- Hill shading and the reflectance mapProceedings of the IEEE, 1981