Essays about: "digital surface models"

Showing result 31 - 35 of 45 essays containing the words digital surface models.

  1. 31. Building and Tree Parameterization in Partiallyoccluded 2.5D DSM Data

    University essay from Linköpings universitet/Institutionen för systemteknik

    Author : Johan Källström; [2015]
    Keywords : building parameterization; tree identification; Polyhedral Building Models; DSM;

    Abstract : Automatic 3D building reconstruction has been a hot research area; a task which has been done manually even up today. Automating the task of building reconstruction enables more applications where up to date information is of great importance. READ MORE

  3. 32. Development of a Flood Model Based on Globally-Available Satellite Data for the Papaloapan River, Mexico

    University essay from Uppsala universitet/Institutionen för geovetenskaper

    Author : Janis Kreiselmeier; [2015]
    Keywords : Flood inundation modelling; shuttle radar topography mission SRTM ; light detection and ranging LiDAR ; LISFLOOD-FP; Remote sensing; Översvämningsmodellering; shuttle radar topography mission SRTM ; light detection and ranging LiDAR ; LISFLOOD-FP; Fjärranalys;

    Abstract : Flood inundation modelling is highly dependent on an accurate representation of floodplain topography. These  remotely  sensed  accurate  data  are  often  not  available  or  expensive,  especially  in  developing countries. READ MORE

  4. 33. Kan markfuktighetskartor användas för att hitta skogsmark med hög bonitet? : ett gis-baserat försök med dtw-index och laserskannad övre höjd

    University essay from SLU/Dept. of Forest Ecology and Management

    Author : Anders Henriksson; [2015]
    Keywords : DTW-index; site productivity; Krycklan; remote sensing; wet-areas mapping; forest hydrology; topography; site properties; bonitet; fjärranalys; markfuktighet; kartläggning; markhydrologi; topografi; ståndortsegenskaper;

    Abstract : The depth-to-water-index (DTW-index) is derived from digital elevation models (DEM) to map soil wetness, in terms of distance from soil surface to the ground water table. The aim of this GIS based study was to investigate the existence of a relationship between DTW-index and forest site productivity (SP). READ MORE

  5. 34. Three-dimensional modeling of Quaternary sediments and valley morphology, Bollnäs, Sweden.

    University essay from Uppsala universitet/Institutionen för geovetenskaper

    Author : Veronica Nord; [2014]
    Keywords : ;

    Abstract : This study demonstrates how to make and use a three dimensional model in GSI3D, based on well data from the Geological Survey of Sweden’s well archive. The objective is to determine if it is possible to show a supposed fault scarp, the Bollnäs fault, in the bedrock and the valley morphology in a 3D model based on the data available. READ MORE

  6. 35. Classification of terrain using superpixel segmentation and supervised learning

    University essay from Linköpings universitet/Datorseende; Linköpings universitet/Tekniska högskolan

    Author : Sanna Ringqvist; [2014]
    Keywords : Segmentation; Superpixels; Features; Classification; Machine learning; Random forest;

    Abstract : The usage of 3D-modeling is expanding rapidly. Modeling from aerial imagery has become very popular due to its increasing number of both civilian and mili- tary applications like urban planning, navigation and target acquisition. This master thesis project was carried out at Vricon Systems at SAAB. READ MORE