CS announces the immediate availability of its sensor-to-terrain mapping library Rugged as free software.
Rugged is a sensor-to-terrain mapping tool which takes into account Digital Elevation Models (DEM) in its line of sight computation.
Rugged mainly provides direct and inverse location, i.e. it allows to compute accurately which ground point is looked at from a specific pixel in a spacecraft instrument, and conversely which pixel will see a specified ground point. This mapping between ground and sensor is computed with a viewing model taking into account ground Digital Elevation Model, Earth rotation will all its tiny irregularities, on-board sensor pixels individual line-of-sights, spacecraft motion and attitude and several physical effects.
Direct and inverse location can be used to perform full ortho-rectification of images and correlation between sensors observing the same area.News summary