Orthophoto

Feiyan Technology specialises in high-resolution orthophoto map production
including digital orthophotos and orthophoto mosaics from raw aerial survey
photography and digital image capture. Orthophotos combined with a
topographic mapping project give a precise reference backdrop tool that
enhances the users understanding of any project area. Combined into
orthophoto mosaics the imagery can cover large areas such as a catchment,
river basin, highway or even local government area.
Features & Benefits of Orthophoto
Orthophoto is an aerial photograph that has been geometrically corrected or
ortho-rectified so that the scale of the photograph is uniform and utilised
in the same manner as a map. An orthophotography can be used to measure true
distances of features within the photograph. Planimetric corrections have
been applied to remove lens distortions and optics, camera angle, and
differences in elevation through a process of measuring ground control
points to connect the photo to the ground, in a drawing-pin like manner. An
orthophoto is an accurate representation of the Earth' s surface. Orthophoto
has the benefits of high detail, timely coverage combined with the benefits
of a map including uniform scale and true geometry.
Specifications of Orthophoto
Resolution: 0.1m
Project area: 4,200km²
Duration: 90 days
Output: DOM(1:1000)
Application: The Third National Land Survey of Putian City
From: Putian City Land and Resources Bureau

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