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
- 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.
Photogrammetry brochure (500 K pdf)
Cost savings for photogrammetry (519K pdf)
Reasons to use photogrammetry (2M pdf)
Contact Bryan Simpson, 303-445-3094, for more information on photogrammetry at Reclamation.