Flagship service

Photogrammetry & 3D Modelling.

Overlapping aerial imagery, processed into survey-grade point clouds, meshes and volumetric reports — the core of what LAM Geospatial does.

Point clouds
Meshes
Digital twins
Volumetrics

Request a Quote Volumetric Measurement

Digital surface model from one of our own survey flights — real ground, real hedgerows.

How it works

From overlap to model.

Photogrammetry rebuilds 3D geometry from ordinary photographs — and the accuracy comes as much from the method as the camera.

Capture

Overlapping stills flown in a grid pattern — typically 70–80% front and side overlap, altitude set to the ground sample distance the deliverable needs.

Match

Software finds shared features across thousands of overlapping frames and solves each camera's position — structure-from-motion.

Densify

Multi-view stereo fills in the detail between matched points, building a dense point cloud of the whole site.

Model

The point cloud becomes a mesh, orthomosaic, DEM/DTM or volumetric report — whichever format the job calls for.

Centimetre-accurate drone surveys are not automated outputs. They are the result of deliberate, mathematically defensible choices.

Your deliverable

What you receive.

A live, measurable model you open in a browser — with every underlying file supplied alongside it.

A model you can measure, not a folder you can't open.

Completed datasets are delivered through our own client portal. You open the survey in a browser — pan it, measure it, section it, share it — with nothing to install and no specialist GIS or CAD licence to buy. The raw files come with it for your own workflows.

If a figure is ever questioned, it opens back to the measurement it came from. Everyone is looking at the same site.

Measure anything on screen Distances, heights, areas and cross-sections taken straight off the model.
Volumes you can stand behind Draw around a stockpile for cubic metres and tonnage — with the working shown.
Compare one survey against the next Period-to-period change, or measured against a design surface.
Share it with a link Your team, your client, your insurer. No software for them to buy.
Hosted for twelve months, extended by arrangement Included in the project price, not billed to you as a yearly licence.

Output formats

Point Cloud

STRUCTURE-FROM-MOTION · RGB-COLOURED

Mesh Model

TRIANGULATED SURFACE · OBJ/PLY

DEM / DTM

ELEVATION MODEL · CONTOUR EXPORT

Volumetric Report

STOCKPILE · CUT/FILL · EARTHWORKS

Worting House, Basingstoke

Real capture. Real control.

Parkland flown and processed in-house across a 6.5-hectare capture — the ground control targets are still visible in the grass.

Aerial orthomosaic of surveyed parkland at Worting House, Basingstoke, bounded by mature tree belts, with ground control targets visible as small white squares across the grass — The surveyed parkland · ground control laid across the whole extent

Detail of the orthomosaic over open parkland, with small square ground control targets laid out across the grass — Orthomosaic detail · 1.85 cm ground sample distance

Close view of a coded ground control target on grass, as resolved in the orthomosaic — A control target, as the survey resolves it

Ground sample distance1.85 cm
Dense point cloud12.4M points
Images captured191
Area covered6.5 ha
Time in the air4 min 20 s
Ground controlEmlid RS4 RTK

Figures taken from the processing report for this flight at Worting House, Basingstoke. Project accuracy is confirmed per site — see accuracy.

Volumetric measurement

Quantities, not just pictures.

Comparing a surveyed point cloud against a design surface or an earlier survey turns geometry into a number you can act on.

Measurement	Method	Example output
Stockpile volume	Point cloud vs. ground plane	1,240 m³ (illustrative)
Cut / fill	Design surface vs. as-flown surface	−860 m³ cut (illustrative)
Progress over time	Survey vs. previous survey	+310 m³ this period (illustrative)

Figures above are illustrative formatting examples, not real project data.

Why drone photogrammetry

Drone survey vs. traditional survey.

Where an aerial photogrammetric survey outperforms a conventional ground survey.

Factor	Traditional ground survey	LAM drone photogrammetry
Time on site	Multiple visits, often days for larger sites	Single flight session, typically hours
Coverage	Discrete surveyed points and cross-sections	Continuous coverage — every square metre of the site captured
Repeat monitoring	A fresh visit, and cost, each time the site changes	Repeat flights overlay directly for progress and volumetric change over time
Equipment	Standard survey-grade instruments	DJI Matrice 4E with RTK & Emlid Reach RS4 base station
Accuracy	Survey-grade, dependent on method & equipment	Survey-grade with Emlid Reach RS4 ground control & RTK positioning ^¹
Cost driver	Scales with crew time and number of site visits	Scales with site size and deliverable complexity ^²

Get in touch

Have a site that needs modelling?

Tell us the site size, what you need measured, and the format you work in — we'll come back with a plan and a price.

Request a Quote