Photogrammetry vs Laser Scanning: When to Use Which
Photogrammetry is cheaper. Laser scanning is more accurate. Here's how to pick the right tool for your project — or combine both.
Both photogrammetry and laser scanning capture reality in 3D, but they work very differently and serve different jobs. Picking the wrong one wastes budget — or delivers data that's unfit for your workflow.
How they work
Laser scanning measures distance directly. The scanner fires laser pulses and times the return. Each point's XYZ position is calculated from the known origin and direction. Accuracy: 1–4 mm per station.
Photogrammetry computes 3D geometry from overlapping photographs. Software (RealityCapture, Agisoft Metashape, ContextCapture) matches features between hundreds or thousands of images and triangulates positions. Accuracy: typically 5–30 mm, sometimes better with ground control points.
When laser scanning wins
- Indoor spaces with low light or featureless surfaces (blank walls, dark corridors)
- High-accuracy requirements for MEP coordination, fabrication, or structural analysis
- Tight schedule — a building can be scanned in hours and processed the same day
- Reflective or transparent surfaces are still hard, but scanning handles them better than photogrammetry
- No additional pilot license required — easier to deploy in dense urban areas
When photogrammetry wins
- Large outdoor sites — drone photogrammetry can cover 10+ hectares in a flight
- Roof inspections and facade documentation where access is limited
- Texture quality matters — photogrammetry produces high-resolution color textures that scans can't match
- Budget-constrained projects that need 3D context but not millimeter accuracy
- Heritage documentation where photos serve double duty as an archive
When you need both
For complex projects we routinely combine the two:
- Laser scan the interior and ground-level facades (high accuracy where it matters)
- Drone photogrammetry for the roof, upper facades and surrounding site
- Merge both datasets in a single coordinate system via shared control points
This delivers a complete, textured digital twin at a fraction of the cost of scanning everything from a lift.
Cyprus-specific notes
- Drone regulations: Cyprus requires drone operators to be licensed by the Department of Civil Aviation. For commercial flights near urban areas (Limassol, Nicosia center, airports), additional permits apply. Plan for 1–2 weeks lead time.
- Lighting: photogrammetry quality depends heavily on consistent, diffuse light. Cyprus summer noon sun creates harsh shadows that confuse the software. Morning or overcast conditions deliver the best results.
- Coastal projects — sea spray and reflective surfaces (white-painted walls, glass) reduce photogrammetry accuracy. Scanning is more reliable here.
Cost comparison (typical Cyprus pricing)
| Task | Photogrammetry | Laser scanning |
|---|---|---|
| Small villa exterior | Lower | Higher |
| Multi-story interior | Not practical | Standard choice |
| 5-hectare site survey | Standard choice | Impractical |
| Heritage building (full) | Combine both | Combine both |
| MEP retrofit | Inadequate | Required |
How to brief us
If you're not sure which to pick, give us:
- The project address and total area
- What deliverables you need (BIM model? orthophoto? volume calculation?)
- Required accuracy (millimeter / centimeter / meter)
- Access constraints (occupied building, restricted hours, restricted areas)
- Deadline
We'll recommend the right approach — sometimes a combination — and quote accordingly.