The information of slope and vegetation coverage of the monitoring region were extracted, based on DEM (Digital Evaluation Model) and Spot5 Satellite data images, and fishnet grid was generated using GIS (Geographic Information System) and RS (Remote Sensing) technique. Applying the information of slop and vegetation coverage layers into the corresponding space grid by using the function of zon...

The City of Barcelona has a population of just over 1.5 million inhabitants. The Metropolitan Region Barcelona (RMB) extends to some 3,236 km and according to the 2001 Census has a population of almost 4.4 million inhabitants. In recent years the population of the City of Barcelona has been in decline, in contrast to marked demographic increases in the wider metropolitan area. Indeed the RMB ha...

Change detecting and timely updating of residential areas is widely recognized as one of the most challenging tasks for an operational GIS. High spatial resolution satellite data provide an efficient source of information. This paper describes a hierarchical object-oriented approach for extracting residential areas from IKONOS and SPOT5 images acquired in 2001 and 2004, respectively. Hierarchic...

The Grand Canal of China is the longest ancient canal in the world. In terms of improving communications between the north and south, promoting economic and cultural exchanges and strengthening the unification of the country, the canal is an astonishingly huge project in the history of Chinese civilization. However, at present, some sections of the Grand Canal have already dried up. We are face...

In this work a parametric multi-sensor Bayesian data fusion approach and a Support Vector Machine (SVM) are used for a Change Detection problem. For this purpose two sets of SPOT5-PAN images have been used, which are in turn used for Change Detection Indices (CDIs) calculation. For minimizing radiometric differences, a methodology based on zonal "invariant features" is suggested. The choice of ...

Alaskan glaciers are among the largest regional contributors to sea-level rise in the latter half of the 20th century. Earlier studies have documented extensive and accelerated ice wastage in most regions of Alaska. Here we study five decades of mass loss on high-elevation, land-terminating glaciers of the Wrangell Mountains ( 4900 km) in central Alaska based on airborne center-line laser altim...