Ergonomics studies
Forensic investigations
Architectural records
What is photogrammetry?
Photogrammetry is the technique of extracting dimensional data
from one or more photographs using trigonometric triangulation.
It also enables the generation of computer-based 3D models from
photographs.
The program used by Hunarch Consulting is Photomodeler
Why use photogrammetry?
1. Photogrammetry enables measurements to be derived from photographs.
But why use photos?
- Scenes and objects might be too complex, or inaccessible, or both
for measurement by other means.
- Photography is a very quick recording method for later data analysis:
important if there is insufficient time for measurement by other
means.
- Photographic records (e.g. from 35mm, digital or video cameras)
may be the only source of information available.
- Enables measurement extraction and image analysis for an indefinite
period after the initial recording.
- Preserves a record of orginal conditions after changes have occurred.
- Photographic recording avoid or minimises the risk of contamination
of the scene: important for evidentiary applications.
2. Photogrammetry enables "real-world" rotatable 3D computer
imaging. But what is the advantage of this?
- Compared with computer generated rotatable 3D renderings, complex
scenes or objects can be modeled much more quickly.
- The preservation of the original photographic record in the model
may have greater credibility and may be valuable for evidentiary
applications.
Forensic investigations
Crime scenes; accidents; structural failures; effects of natural disasters.
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