Mapping
Orthophotos and DTM/DSM
Georeferenced orthophotos and digital terrain and surface models for survey, planning and development work.
Service · Aerial capture
Drone photogrammetry for large areas and complex structures.
We produce orthophotos, 3D models, point clouds and high-resolution textures from planned flights, survey control and photogrammetric processing built for technical use. We fly anywhere in Spain, and we hold the operator and pilot licences the Spanish authority requires.
GSDResolution set per project
GCPGround control points and GNSS RTK
AESALicensed Spanish operator and pilots
3DOrthophoto, mesh and point cloud
Fast coverage where the ground rules.
Photogrammetry reconstructs a site or a building from overlapping photographs: the software cross-references hundreds of images taken from the drone and computes the 3D position of every detail, producing models at real scale and in real coordinates. It is the quickest way to cover large areas, roofs and hard-to-reach zones without scaffolding or road closures.
Construction
Progress monitoring
Progress control, volume measurement and earthworks calculation from repeat flights on a fixed cycle.
Inspection
Roofs and façades
Inspection of roofs, warehouse coverings and façades with no access equipment, at high image resolution.
Coverage and density at another scale.
With a photogrammetric drone we cover up to 400 ha in a single day, at 5 cm accuracy (2–3 cm when the flight is supported with ground control points).
+9.7 Mpoints/ha, against 20–60 points/ha with conventional surveying
20–80×more ground per day: 400 ha/day against 5–20 ha/day for a two-person team
| Measure | Conventional surveying | Photogrammetric drone |
|---|---|---|
| Point density | 20–60 points/ha | About 9,700,000 points/ha (970 pts/m²) |
| Points captured per day | 800–1,000 | About 3.9 billion |
| Output (two-person team) | 5–20 ha/day | 400 ha/day |
| Vertical accuracy | 2–3 cm | ~5 cm (2–3 cm with GCPs) |
| Additional product | Field sketch | 3.2 cm/px orthophoto, DSM, 3D mesh, obliques |
Drone photogrammetry or drone LIDAR
Drone photogrammetry is faster and cheaper, and fits urban areas better, where flight permissions are simpler and there is no vegetation to see through.
Where dense vegetation has to be penetrated, or the ground has too little visual texture, the alternative is drone LIDAR: it measures with a laser rather than photographs, at a higher operating cost.
Drone photogrammetry over an industrial warehouse.
Photogrammetric flight with ground control points over an industrial warehouse. On this kind of project we combine photogrammetry with drone LIDAR where there are roofs or raised areas under vegetation, as at the Retamares water tank for Canal de Isabel II.
Results ready for your discipline.
We process the flight and hand over technical products matched to each use, combinable with ground-based capture.
Photogrammetric products
- High-resolution georeferenced orthophoto (GeoTIFF).
- Textured 3D model (OBJ, FBX) and mesh.
- Dense point cloud (LAS, LAZ) and contour lines.
Technical production
- Area and volume measurement.
- Drawings and mapping in DWG / SHP for GIS.
- Combined with drone LIDAR or terrestrial laser scanning for complete coverage.
From flight to deliverable.
We plan the flight around resolution, coverage, survey control and what the model is finally for. Here is the whole sequence, from flight plan to 3D model.
01
Planning and permits
We set the flight plan, resolution (GSD) and control points, and obtain the AESA authorisations.
02
Survey control
We measure control and check points with GNSS RTK to guarantee accuracy and georeferencing.
03
Flight and capture
We fly with the overlap and coverage the project objective calls for.
04
Photogrammetric processing
We generate the orthophoto, textured 3D model and point cloud, and verify the accuracy achieved.
05
Delivery on the platform
Access to the web viewer and downloads in whichever formats your team works in.
GSD decides what can be measured.
GSD (Ground Sample Distance) is the real size of ground each pixel of the orthophoto represents: the smaller the GSD, the more detail, but the longer the flight and the processing. We choose GSD from what has to be detected, not by default.
Large-area flights
- Coarser GSD, higher flying altitude, fast coverage of large plots or facilities.
- Suited to earthworks, planning and periodic civil works monitoring.
- Can be combined with GCPs to hold accuracy despite the lower per-pixel resolution.
Detail flights
- Finer GSD, lower and slower flights, greater overlap between photographs.
- Necessary for inspecting façades, roofs or elements with visible defects.
- Drone LIDAR is added where, beyond imagery, measurement is needed under tree cover or in shadow.
Questions about drone photogrammetry.
How accurate is drone photogrammetry?
With ground control points (GCPs) and GNSS RTK, drone photogrammetry reaches accuracies of a few centimetres — enough for topographic survey, volume measurement and technical orthophotos.
Do you need permits to fly in Spain?
Yes. We operate with a registered operator and licensed pilots, and we obtain the authorisations from AESA — the Spanish civil aviation authority — along with any airspace clearances required, before each flight. For an overseas client this is the part of the job that most often causes delay, and we take it on as part of the service.
What deliverables come out of a photogrammetric flight?
Georeferenced orthophotos (GeoTIFF), textured 3D models (OBJ, FBX), dense point clouds (LAS, LAZ), digital terrain and surface models (DTM/DSM) and mapping in DWG or SHP for GIS.
How much ground can a photogrammetric drone cover in a day?
Up to 400 hectares in a single day, against 5–20 ha/day for a conventional two-person survey team. Density changes scale too: roughly 20–60 points/ha with conventional surveying against around 9.7 million points/ha with photogrammetry, at about 5 cm accuracy (2–3 cm when the flight is supported with ground control points).
Drone photogrammetry or drone LIDAR — which should I choose?
Drone photogrammetry is faster and cheaper, and fits urban areas better, where flight permissions are simpler. Drone LIDAR is the right call where dense vegetation has to be penetrated or the ground has too little visual texture, though its operating cost is higher.
Contact Have a site in Spain
Have a site in Spain
that needs capturing?
Tell us what you need surveyed. We review your case with no obligation and send back a technical and commercial proposal matched to your requirements — in English, working to your project timetable.