Spectral filtering as a method of visualising and removing striped artefacts in digital elevation data [PDF]
, 2008 Spectral filtering was compared with traditional mean spatial filters to assess their ability to identify and remove striped artefacts in digital elevation data. The techniques were applied to two datasets: a 100 m contour derived digital elevation model
Albani +51 more
core +1 more source
Soil-terrain modelling and erosion analysis at field scale level, a case study
Soil and Water Research, 2009 Pedometrical methods and digital soil mapping represent a progressive approach to the evaluation of various terrain-related soil processes. A detailed digital terrain model was used for the analysis of erosion - sedimentation situation and description of
Tereza Zádorová +2 more
doaj +1 more source
TERRA: Terrain Extraction from elevation Rasters through Repetitive Anisotropic filtering
International Journal of Applied Earth Observations and Geoinformation, 2020 Over the past decades, several filters have been developed to derive a Digital Terrain Model (DTM) from a Digital Surface Model (DSM), by means of filtering out aboveground objects such as vegetation.
Anton Pijl +5 more
doaj +1 more source
Enhanced visualization of the flat landscape of the Cambridgeshire Fenlands [PDF]
, 2015 The Fenlands of East Anglia, England, represent a subtle landscape, where topographic highs rarely exceed 30 m above sea level. However, the fens represent an almost full sequence of Quaternary deposits which, together with islands of Cretaceous and ...
Farewell, Timothy S. +2 more
core +1 more source
Probability maps as a measure of reliability for indivisibility analysis [PDF]
Spatium, 2005 Digital terrain models (DTMs) represent segments of spatial data bases related to presentation of terrain features and landforms. Square grid elevation models (DEMs) have emerged as the most widely used structure during the past decade because of their ...
Joksić Dušan, Bajat Branislav
doaj +1 more source
Fast approximation of visibility dominance using topographic features as targets and the associated uncertainty [PDF]
, 2003 An approach to reduce visibility index computation time andmeasure the associated uncertainty in terrain visibility analysesis presented. It is demonstrated that the visibility indexcomputation time in mountainous terrain can be reduced substantially ...
Rana, S
core +1 more source
DEM ACCURACY RESEARCH BASED ON UNMANNED AERIAL SURVEY DATA [PDF]
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2020 Currently, digital elevation models (DEM) created by photogrammetric method based on unmanned aerial survey data are becoming an increasingly popular product.
V. M. Kurkov, A. S. Kiseleva
doaj +1 more source
Modelling the spatial distribution of DEM Error [PDF]
, 2005 Assessment of a DEM’s quality is usually undertaken by deriving a measure of DEM accuracy – how close the DEM’s elevation values are to the true elevation.
Bolstad P V +23 more
core +1 more source
Evaluating Suitable Analysis Methods Using Digital Terrain in Viewshed Analysis [PDF]
Journal of the Korean Association of Geographic Information Studies, 2011 The purpose of this study is to contribute enhancing the accuracy of viewshed analysis through the explanation for an analysis method of viewshed analysis using GIS. According to previous studies, the visible area using digital terrain in viewshed analysis depends on a visible interest area, scale of terrain, spatial resolution and surface data.
Chang-Hwan Yeo, Young-Jin Jang
openaire +1 more source
Using Lidar Data to Analyse Sinkhole Characteristics Relevant for Understory Vegetation under Forest Cover\u2014Case Study of a High Karst Area in the Dinaric Mountains [PDF]
, 2015 In this article, we investigate the potential for detection and characterization of sinkholes under dense forest cover by using airborne laser scanning data.
Igor, Dakskobler +4 more
core +9 more sources