Methods of obtaining i contours
h d f b i i Methods of obtaining contours - Mindthreshold
h d f b i i Methods of obtaining contours - Mindthreshold
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Photogrammetric method• Advantages– Speed <strong>of</strong> compilation– High accuracy <strong>of</strong> the locations <strong>of</strong> planimetric features– Fithfl Faithful reproduction <strong>of</strong> the configuration <strong>of</strong> theground by continuously traced contour lines– Reduction in the amount <strong>of</strong> control surveying requiredto control the mapping– Freedom from interferences by adverse weather andinaccessible terrain– Photographic representation <strong>of</strong> the details <strong>of</strong> the areais obtainedPrepared by: Andre‐Paul C. Ampong 12
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