DISCLAIMER This document describes work undertaken as part of a programme of study at the Faculty of Geo-Information Science and Earth Observation of the University of Twente. All views and opinions expressed therein remain the sole responsibility of the author, and do not necessarily represent those of the Faculty. i ABSTRACT 2.5D building modelling is of great interest for visualization, simu...

a r t i c l e i n f o Keywords: Forest stand height Forest inventory Remote sensing QuickBird Panchromatic Object-based Boreal Monitoring Mean stand height is an important parameter for forest volume and biomass estimation in support of monitoring and management activities. Information on mean stand height is typically obtained through the manual interpretation of aerial photography, often supp...

The objectives of this research were to: (1) develop rule sets in Definiens Developer 7® for mapping and monitoring riparian zone land-cover classes within two QuickBird images; and (2) compare the results of four object-oriented and pixel-based change detection approaches. Two QuickBird images, atmospherically corrected to at-surface reflectance, were captured in May and August 2007 for a sava...

Wetland ecosystems straddle both terrestrial and aquatic habitats, performing many ecological functions directly and indirectly benefitting humans. However, global wetland losses are substantial. Satellite remote sensing and classification informs wise wetland management and monitoring. Both pixeland object-based classification approaches using parametric and non-parametric algorithms may be ef...

A multiscale geographic object-based image analysis to estimate lidarmeasured forest canopy height using Quickbird imagery Gang Chen a , Geoffrey J. Hay a , Guillermo Castilla a , Benoît StOnge b & Ryan Powers a a Foothills Facility for Remote Sensing and GIScience, Department of Geography, University of Calgary, Calgary, Canada b Department of Geography, Université du Québec à Montréal, Montre...

The focus of soil erosion research in the Alps has been in two categories: (i) on-sitemeasurements, which are rather small scale point measurements on selected plots often constrained to irrigation experiments or (ii) off-site quantification of sediment delivery at the outlet of the catchment. Results of both categories pointed towards the importance of an intact vegetation cover to prevent soi...