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Proceedings Paper

Toward an automatic updating process for land-cover cartography using SPOT image interpretation
Author(s): Cecile Huet; Michael Tonon; Herve Le Men; Olivier Jamet
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Paper Abstract

The aim of the present analysis is the design of a reliable automatic updating process for the IGN BDCarto. Geographic evo— lution is a dynamic phenomenon, whereas cartographic updating, more static, requires the knowledge of a geographic state at one moment. In the GIS context, digital data gets a dynamic dimension, and the updated database must be in coherence with the initial one. Thus, two aspects have to be focused on : detect the changes and keep the inter-temporal coherence. Tests, composing an automatic updating in a test-area with an existing process, showed not reliable enough results. The main problems we met with such a process is the variability of interpretation, which drowns the real changes supposed to be detected. The difficulty is reinforced by the generalization operations imposed by the data-base specifications. To minimize errors induced by those aspects, an improved updating process may be envisaged, in which knowledge of a priori evolutions would be introduced. The proposed solution consists then in including constraints, probabilistic for the evolutions and geometric for the generalization, in a fuzzy classification.

Paper Details

Date Published: 17 December 1996
PDF: 11 pages
Proc. SPIE 2955, Image and Signal Processing for Remote Sensing III, (17 December 1996); doi: 10.1117/12.262897
Show Author Affiliations
Cecile Huet, Institut Geographique National (France)
Michael Tonon, Institut Geographique National (France)
Herve Le Men, Institut Geographique National (France)
Olivier Jamet, Institut Geographique National (France)


Published in SPIE Proceedings Vol. 2955:
Image and Signal Processing for Remote Sensing III
Jacky Desachy, Editor(s)

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