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The use of SPOT-HRV data for the mapping of the land cover (applied upon East-Mono, Central Togo)

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Author(s): B. M. De Vliegher

Journal: Afrika Focus
ISSN 0772-084X

Volume: 7;
Issue: 1;
Start page: 15;
Date: 1991;
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Keywords: Remote Sensing Spot | Multispectral View | Visual Image Interpretation | Mapping | Vegetation | Land Use | Togo

ABSTRACT
The mapping of the land use in a tropical wet and dry area (East-Mono, Central Togo) is made using remote sensing data, recorded by the satellite SPOT. The negative, multispectral image data set has been transferred into positives by photographical means and afterwards enhanced using the diazo technique. The combination of the different diazo coloured images resulted in a false colour composite, being the basic document for the visual image interpretation. The image analysis, based upon differences in colour and texture, resulted in a photomorphic unit map. The use of a decision tree including the various image characteristics allowed the conversion of the photomorphic unit map into a land cover map. For this, six main land cover types could be differentiated resulting in 16 different classes of the final map.

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