TRUEDOP – A NEW QUALITY STEP FOR OFFICIAL ORTHOPHOTOS
The National Mapping Agencies (NMA) of the German federal states derive nationwide digital Scrubber Pads orthophotos with a ground resolution of 10 to 20 cm by aerial surveys at regular cycles of two or three years.Standard surveys use large format cameras, the direct georeferencing informations and normal overlap ratios of 70% forward and 30% side