Digital terrain model
Digital
terrain model is a mathematical model of the earth's surface
displayed in real spatially and altitudinally defined geometric
entities and can, by use of appropriate hardware and software, be
used for various purposes that require the interpretation of shape of
the earth's surface.
Digital
terrain models can be used for several purposes:
projecting
objects and roads,
determining
disturbance, i.e. scope of optical visibility and radio waves,
hydrotechnic
projecting,
producing
maps and creating various altitudinal and perspective views,
producing
digital ortophoto.
Institute
for photogrammetry is equipped and has a team for collecting
altitudinal data by photogrammetric restitution, terrestrial survey
or from the existing sources, as well as for calculation and
processing of digital terrain models and making adequate cartographic
displays.
In
the area of digital terrain models, Institute for photogrammetry does
the following:
collects
data for creating digital relief models manually and automatically,
reviews,
analyses and controls the quality of collected data,
makes
calculations and all types of displays of digital relief models.
