Strengths and weaknesses of photogrammetry and LiDAR, cost differences and a practical decision table.
The most common question in mapping and modelling is: “Is orthophoto enough, or do I need LiDAR?” The answer depends on terrain, required accuracy and budget. The two technologies complement rather than compete.
How photogrammetry works
Software finds common points in overlapping photos and calculates 3D positions. The result is a colour orthophoto, a surface model (DSM) and a textured 3D model of photographic quality. It is very efficient in open terrain, urban areas and construction sites, and costs less per hectare.
How LiDAR works
Laser pulses are sent and distance is measured from the return time. Because pulses can pass between vegetation to reach the ground, LiDAR captures ground beneath forest and even thin conductors. It is independent of light and works in shade and at dusk.
Decision table
- Open land, zoning base, volume calculation: photogrammetry
- Forested or densely vegetated terrain, ground model: LiDAR
- Power-line corridor: LiDAR (tree-to-conductor clearance) + photogrammetry (texture)
- Heritage facade, fine texture: photogrammetry, optionally combined with LiDAR for fine detail
- High-speed corridor mapping: VTOL fixed wing + LiDAR
Cost difference
Photogrammetry runs roughly 180–260 TRY per hectare, LiDAR 520 TRY and above. LiDAR sensors and processing are expensive, but where the ground is not visible, photogrammetry gives wrong results, so the wrong choice costs more.
Hybrid approach
On many projects the best result is a combination. LiDAR supplies ground height while photographs colourise the point cloud and add texture. The Kartalay KX-8 platform captures 26 MP RGB with LiDAR in the same flight, reducing the workflow to a single mission.
If you want to choose the right method for your project, during the flight planning call we evaluate vegetation, target accuracy and output format together.
Output formats and software compatibility
Both methods can deliver LAS/LAZ point clouds, GeoTIFF and DXF. If you tell us your existing CAD, GIS or BIM software, we prepare the delivery format and coordinate system accordingly so you can use the data without conversion.