Photogrammetry
3D reconstruction from overlapping photographs, covering the shoreline and any structure above the waterline.
What It Produces
Combined with the underwater sonar data into a single model spanning both above and below the waterline, instead of two datasets stitched together after the fact.
Where It Fits
Needs clear line of sight and workable light — the above-water half of a survey, not a substitute for sonar underwater.
Deployed From
Run from the same 7m/9m platforms covered under Platforms, applied to subsea survey work and heritage and conservation missions alike — the technique doesn't change, only the purpose it's deployed for.
What is Photogrammetry?
3D reconstruction from overlapping photographs, covering the shoreline and any structure above the waterline.
What does it produce?
Combined with the underwater sonar data into a single model spanning both above and below the waterline, instead of two datasets stitched together after the fact.
What are its limits?
Needs clear line of sight and workable light — the above-water half of a survey, not a substitute for sonar underwater.