All Field Notes

When photogrammetry becomes a project record

A useful aerial survey does more than produce an attractive model. It preserves a measurable, repeatable account of site conditions that teams can return to when decisions become consequential.

High-resolution orthophoto showing an active project site and inspection detail

Aerial imagery becomes valuable when it survives the moment it was captured. The real deliverable is not simply a mosaic, point cloud, or mesh. It is a spatial record that can be checked, compared, and explained months later.

Start with the decision, not the aircraft

Flight altitude, overlap, control, and processing choices should follow the question the project team needs to answer. A progress record has different tolerances than a quantity calculation, a structural interpretation, or a baseline condition survey.

A defensible spatial record connects collection conditions, processing choices, and deliverables to the decision they are meant to support.

Repeatability is an operating advantage

Consistent acquisition geometry and documented control make it possible to compare one campaign with the next. Changes in ground surface, access, infrastructure, or environmental conditions become easier to separate from changes introduced by the collection method itself.

Keep the useful outputs open

Orthophotos, point clouds, elevation surfaces, and models should arrive in formats that the project team can actually use. The best workflow preserves the source record while producing lighter views for field coordination, reporting, and decision meetings.

What this means for project teams

Before commissioning the next flight, define the decision, the required accuracy, and the comparison that may need to be made later. That small amount of discipline turns imagery into durable project intelligence.

About the author

Mitchell Green, P.G.

Geologist and founder of Pogonip Group, working across geological interpretation, geospatial systems, remote sensing, and complex project delivery.

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