Drone orthophotos and orthomosaics
An orthomosaic is an aerial image corrected for perspective and terrain relief, with every pixel georeferenced. You can measure distances and areas directly on it — making it the fastest deliverable for design bases, boundary checks and site records.
What you get
An orthomosaic with centimetre-level GSD in your coordinate reference system, as GeoTIFF (for analysis and CAD/GIS), ECW (fast viewing of large areas) and JPEG 2000. Optional map-sheet tiling and a KML/KMZ preview.
Applications
- Design and site plan bases
- Cadastral and boundary checks
- Construction site records
- Municipal and corporate GIS bases
Site plans and design bases, cadastral and property boundary checks, periodic site records, municipal and corporate GIS bases, field boundaries, and visual evidence for property valuations.
What drives accuracy
Flight altitude and camera resolution set the GSD; ground control points and RTK/PPK set absolute accuracy. If you’ll be taking measurements, we recommend ground control plus an accuracy report against independent checkpoints.
Orthomosaic vs satellite imagery
Satellite imagery ranges from tens of centimetres to metres per pixel and is often out of date. A drone orthomosaic is captured on the date you need, at sub-centimetre detail, in the coordinate system you specify.
How it works
- ScopingWe confirm the site location and extent, the deliverables you need and the accuracy required, and check airspace permissions and site conditions.
- Flight planning and ground controlOverlap, flight altitude and ground sampling distance (GSD) are set to meet the spec; ground control points (GCPs) are surveyed with GNSS where required.
- Data captureThe site is flown to plan, capturing imagery and position data with RTK/PPK positioning.
- Photogrammetric processingImages are aligned, a dense point cloud and surface model are generated and tied to the GCPs, and accuracy is verified against independent checkpoints.
- QA and deliveryDeliverables are produced in your coordinate reference system (e.g. ITRF96 / TM zone) and file formats, and handed over with an accuracy report.
File formats
GeoTIFF, ECW, JPEG 2000
FAQs
Can I take measurements from an orthomosaic?
Yes. It’s georeferenced, so lengths and areas can be measured in any CAD or GIS package. Measurement accuracy is stated in the accuracy report.
Which coordinate system is it delivered in?
ITRF96 (TUREF) with the appropriate TM zone, the standard in Türkiye, by default — or any other system your project requires.
Does it work in wooded and built-up areas?
Yes, but dense vegetation hides the ground. If you need ground levels, we plan the orthomosaic together with a digital terrain model.
Services behind this deliverable
Aerial mapping
Drone photogrammetry, RTK/PPK surveying, orthomosaics, topographic surveys, DSM/DTM, point clouds, volumes and cross-sections — the data capture layer of Dronemeters.
GIS and spatial intelligence
Geographic information systems, spatial data management, PostGIS, raster and vector analysis, terrain and suitability analysis, change detection, 3D GIS, WebGIS and decision support.
AI and geospatial analytics
AI-powered detection of objects, buildings, roads, vehicles and trees in drone and satellite imagery; land cover classification, change and damage analysis, solar panel and thermal anomaly detection.
Related deliverables
Topographic survey
A layered, scaled digital survey to Turkish large-scale mapping standards, with spot heights, contours, buildings and site features.
DWG, DXF, NCZ3D terrain model
A 3D model of the ground and everything on it — surface model (DSM), bare-earth model (DTM), classified point cloud and textured mesh.
GeoTIFF (DSM/DTM), LAS/LAZ, OBJ, 3D TilesProgress monitoring
A dated record of surface change and construction progress, built by comparing surveys flown on different dates.
GeoTIFF, SHP, PDF