Title: Enhancement of LIDAR digital elevation models using high resolution CASI images
Author: Environment Agency - National Centre for Environmental Data and Surveillance
Document Type: Monograph
Abstract:
The use of the LIDAR system (Laser induced direction and range) to accurately measure height and produce digital elevation models (DEM) has been demonstrated (R and D Project E1-009, R and D Technical Report E43). There is great potential for enhancing the information derived from this system using high resolution multispectral imagery, for example from the Compact Airborne Spectrographic Imager (CASI). Two examples have been investigated. CASI data is first draped over the LIDAR derived DEM for Spurn Head, to allow enhanced visualisation of both the CASI and elevation data. LIDAR and CASI data of a further study area, the River Arun, are then combined and used in the analysis of flood damage. This involves the use of digital classification of the CASI data to distinguish land cover types, which in turn are attributed land values in terms of housing equivalents. These two examples clearly illustrate the advantage of combining these two datasets.
Publisher: Environment Agency
Publication Date: [after 1996]
Publication Place: Bath
Subject Keywords: Aerial surveying; Light; Elevation; Height; Modelling; Spectrometry; Data processing
Geographic Keywords: Humber
Extent: n.p. [18]
Permalink: http://www.environmentdata.org/archive/ealit:1866
Total file downloads: 66
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