How to use information extracted from former aerial pictures?
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Type: Report
Duration: January 1937 - on-going
A methodology is presented in order to extract information of panchromatic aerial pictures for land cover cartography. Without meta-information about their geometry, the scanned pictures are rectified and empirically geo-referenced using geometric transformations and control points.
A mosaïc of pictures dating of year 1937 was obtained with this methodology for the commune of Versoix (GE), with a geometric precision ranging between 2 to 5 m. A simplified map of the land cover has been carried out with an object approach (segmentation followed by classification), using criteria of intensity, shape and texture.
Data credit(s):
Laurent Niggeler (), Jean-Philippe Richard (UNEP/DEWA/GRID-Geneva), Jean-Michel Jaquet (UNEP/DEWA/GRID-Geneva)
GRID unit:
Environment Modelling and Geoprocessing
UNEP region: Europe/Western Europe
UNEP priorities:
Ecosystems Management
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english version (2008, Size:0Mb)
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