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Proceedings Paper

Three-dimensional expression of relief in Landsat TM and SPOT P images
Author(s): Ma Made la Luz Gil; Julia Armesto; Ignacio Canas
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Paper Abstract

The perceptual problems of viewing topography on geo-images are caused by illumination from the southeast during data collecion. This problem affects the majority of satellite images. The aim f this work was to obtain a stereoscopic effect of shaded relief in such images. Techniques available in commercial digital processing programs were used in the absence of a digital elevation model. The images used were taken by the Landsat TM and SPOT P satellites; the software used was the EASI-PACE and ACE programs (Canadian PCI Geomatics Group). The pseudoscopic effect was solved by using the first principal component obtained in principle components analysis of the three channels resulting from the weighted merging of the Landsat and SPOT data. The map obtained provides the observer a view with shaded relief.

Paper Details

Date Published: 13 February 2004
PDF: 8 pages
Proc. SPIE 5239, Remote Sensing for Environmental Monitoring, GIS Applications, and Geology III, (13 February 2004); doi: 10.1117/12.510021
Show Author Affiliations
Ma Made la Luz Gil, Univ. de Santiago de Compostela (Spain)
Julia Armesto, Univ. de Santiago de Compostela (Spain)
Ignacio Canas, Univ. Politecnica de Madrid (Spain)


Published in SPIE Proceedings Vol. 5239:
Remote Sensing for Environmental Monitoring, GIS Applications, and Geology III
Manfred Ehlers; Hermann J. Kaufmann; Ulrich Michel, Editor(s)

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