3D Photogrammetry Mapping
Why use photogrammetry?
Field work that used to take many days,
can now be performed in hours
-
Hundreds of joints can be measured in the same
time that it previously took to measure only a few joints
- Statistical confidence improves greatly
- Rope Access can be minimized, improving
safety
- Topography can be developed at the same time
- Joint planes can be added to the model to see
where they intersect the ground surface
- Geologists can quickly evaluate multiple
projections and see the results on the 3D photo
to compare with outcrops, etc
- Archival 3D Photogrammetric Models can be
invaluable once geology can no longer be
viewed after construction.
- One day’s field work, accuracy to within a few inches
What is photogrammetry?
Light rays from a given point of an object reaching the surface of the camera film (or surface of the digital imaging chip or your eyeball) creates a two-dimensional image.
Each point could have come from a number of different points along a line between the object and the camera sensor.
How does photogrammetry work?
Photogrammetry uses images from two different locations to determine the 3rd dimension, or depth and the location of a particular point.
More Information
Photogrammetry brochure (pdf 500 K)
Cost savings for photogrammetry (519K pdf)
Reasons to use photogrammetry (2M pdf)
Contact Rebecca Heisler, 303-445-3172, for more information on photogrammetry at Reclamation.