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orthophoto, imagery/base maps/land cover

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    Orthophoto is geometrically corrected aerial image ("orthorectified") such that the scale is uniform. Absolute orientation of the image and digital terrain model data is used for the ortorectification of aerial images. The optic effects and the slope of the aerial camera and the effect of the terrain diversity are removed. In a metrical sense the orthophoto is comparable with vector maps, the map sheet division is the same as for TTN 5. All orthophotos are available in TIFF format. Regarding resolution and color spectrum different orthophotos are available: - DOF025 - color (RGB) orthophoto with ground sampling distance (GSD) 0.25 m - DOF050 - color (RGB) orthophoto with ground sampling distance (GSD) 0.50 m - DOF050IR - color near infrared (IR, R and G) orthophoto with ground sampling distance (GSD) 0.50 m.