Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci., XXXVIII-4/W19, 203-208, 2011
http://www.int-arch-photogramm-remote-sens-spatial-inf-sci.net/XXXVIII-4-W19/203/2011/
doi:10.5194/isprsarchives-XXXVIII-4-W19-203-2011
© Author(s) 2011. This work is distributed
under the Creative Commons Attribution 3.0 License.
 
07 Sep 2012
PHOTO-BASED 3D SCANNING VS. LASER SCANNING – COMPETITIVE DATA ACQUISITION METHODS FOR DIGITAL TERRAIN MODELLING OF STEEP MOUNTAIN SLOPES
N. Kolecka Department of GIS, Cartography and Remote Sensing, Jagiellonian University, Krakow, Poland
Keywords: Photogrammetry, TLS, DEM/DTM, Comparison, Visualization, Three-dimensional, Model Abstract. The paper presents how terrestrial laser scanning (TLS) and terrestrial digital photogrammetry were used to create a 3D model of a steep mountain wall. Terrestrial methods of data acquisition are the most suitable for such relief, as the most effective registration is perpendicular to the surface. First, various aspects of photo-based scanning and laser scanning were discussed. The general overview of both technologies was followed by the description of a case study of the western wall of the Kościelec Mountain (2155 m). The case study area is one of the most interesting and popular rock climbing areas in the Polish High Tatra Mts. The wall is about 300 meters high, has varied relief and some parts are overhung. Triangular irregular mesh was chosen to represent the true- 3D surface with its complicated relief. To achieve a more smooth result for visualization NURBS curves and surfaces were utilized. Both 3D models were then compared to the standard DTM of the Tatra Mountains in TIN format, obtained from aerial photographs (0.2 m ground pixel size). The results showed that both TLS and terrestrial photogrammetry had similar accuracy and level of detail and could effectively supplement very high resolution DTMs of the mountain areas.
Conference paper (PDF, 1607 KB)


Citation: Kolecka, N.: PHOTO-BASED 3D SCANNING VS. LASER SCANNING – COMPETITIVE DATA ACQUISITION METHODS FOR DIGITAL TERRAIN MODELLING OF STEEP MOUNTAIN SLOPES, Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci., XXXVIII-4/W19, 203-208, doi:10.5194/isprsarchives-XXXVIII-4-W19-203-2011, 2011.

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