Orthorectification
Making a practical table-top model of the earth's surface is a very complex task. Three
factors cannot be ignored:
- the curvature of the earth’s surface,
- the distortion of satellite or air imagery from obstructing
surface features (mountains, valleys, etc.),
- platform and sensor-induced geometry errors, which present
terrain distortions when the image sensor is only pointing straight down and not
at other features.
Fortunately, our patented process uses advanced software techniques
to correct these inherent problems before we begin creating each
3D-TTM. The
high-level of detail, immediately recognizable surface features, and accurate
terrain elevations make each model a reliable tactical planning tool.
