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isprsarchives XXXVIII 3 W22 25 2011

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Figure 1: Radiometric information is not sufficient to distinguishclasses with similar radiometry, such as grey roofed buildingsfrom roads, or red tiles from bare soil.
Figure 2: Road partly masked by trees and shadows.
Figure 4: Probability models to belong to above-ground (“build-ing”,“high vegetation”) (on the left) and to ground (“road”, “lowvegetation”,“bare soil”) (on the right) according to nDSM.
Figure 5: Group neighbouring alarms is a way to obtain lessalarms to check (especially in cases like this one...)
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