angled at 40 degrees. In parallel with the aerial survey,
Reichardt used the Trimble R8 and 5600 total station to
collect property corners and some top-of-surface elevations
to integrate into the 3D topographic map.
A NEW TECHNIQUE IS BORN
Back in the office, Lafica processed the nadir and
oblique image sets separately to tie photos together and
orientate the project.
Lafica loaded the 127 nadir photos, the UAS GNSS data
and the GCP positions into Trimble's Inpho UASMaster
photogrammetric software to automatically triangulate
the images. It processed the images in batches and
automatically matched images to each other. After
the initial triangulation, Lafica attached precise
coordinates to each control point target in the image.
With that additional georeferencing, UASMaster then
connected all the imagery to the ground control and set
Certified photogrammetrist Robert Lafica prepares the UAS
for launch.
The side view of the property perched precariously on top of the bluff.
Paul Reichardt, PLS, measures one of the ground control targets
with a Trimble R8 GNSS receiver
