Aerial Triangulation |
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Screen Shot of Intergraph IMZ Station doing soft copy triangulation |
To optimize schedule and minimize labor associated with extensive
ground surveys, Optimal Geomatic offers complete in-house conventional and softcopy fully
analytical aerial triangulation (FAAT) services, providing highly accurate control for map
production. This process can further be enhanced when Airborne
GPS supported data are available.
Once aerial photos have been obtained, all point selection, layouts
and codings are determined by Optimal Geomaticīs experienced personnel according to industry
standards.
Softcopy analytical aero triangulation is accomplished using
MATCH-AT. Utilizing high resolution scanned
images, this system minimizes film handling while matching ground points at
variable pixel size. Interior orientation, control and pass point selection, and refined
plate coordinate generation is accomplished in an automatic or semi-automatic process.
Pass points are selected within MATCH-AT using auto-correlation within the image overlap
areas. Increased numbers of pass points strengthen the model setup and reduce parallax.
Skilled technicians use advanced processing software that enables us to avoid gross errors, assuring that all measurements fall within required tolerances. Full strip and bundle adjustment calculations are performed for an entire project simultaneously.