Generating dem from lidar data – comparison of available software tools

• Autorzy: Korzeniowska K. , Łącka M.
• Języki publikacji: EN

Abstrakty

EN

In recent years many software tools and applications have appeared that offer procedures, scripts and algorithms to process and visualize ALS data. This variety of software tools and of “point cloud” processing methods contributed to the aim of this study: to assess algorithms available in various software tools that are used to classify LIDAR “point cloud” data, through a careful examination of Digital Elevation Models (DEMs) generated from LIDAR data on a base of these algorithms. The works focused on the most important available software tools: both commercial and open source ones. Two sites in a mountain area were selected for the study. The area of each site is 0.645 sq km. DEMs generated with analysed software tools ware compared with a reference dataset, generated using manual methods to eliminate non ground points. Surfaces were analysed using raster analysis. Minimum, maximum and mean differences between reference DEM and DEMs generated with analysed software tools were calculated, together with Root Mean Square Error. Differences between DEMs were also examined visually using transects along the grid axes in the test sites.

Słowa kluczowe

EN

remote sensing; GIS; comparison; generation; lidar; DEM; software

PL

teledetekcja; GIS; porównanie; generacja; LIDAR; DEM; oprogramowanie

• Wydawca: Zarząd Główny Stowarzyszenia Geodetów Polskich
• Czasopismo: Archiwum Fotogrametrii, Kartografii i Teledetekcji
• Rocznik: 2011
• Tom: Vol. 22
• Strony: 271--284
• Opis fizyczny: Bibliogr. 26 poz.

Twórcy

autor

Korzeniowska K.

• Department. of Geographical Information Systems, Cartography and Remote Sensing, Institute of Geography and Spatial Management, Jagiellonian University, Gronostajowa Stret, Cracow

autor

Łącka M.

• MGGP Aero Sp. z o.o

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