GEOREAL spol. s r.o.
Enquire

Drone data acquisition

Drones (unmanned aerial vehicles, UAVs) complement our aerial fleet where a large aircraft makes no sense: smaller sites, construction sites, quarries or linear sections. Drone photogrammetry delivers a current orthophoto, a 3D model and volume calculations within days, not weeks.

Fast deploymentUAV photogrammetryComplement to the aerial fleet
Send an enquiry
Drone data acquisition

What it is for

Aerial data for small sites as well

Between ground survey and photography from an aircraft there is a space that belongs to drones: areas of up to a few square kilometres where you need area-wide data quickly and repeatedly.

A drone fitted with a camera captures the site with a high overlap and from the images we photogrammetrically produce an orthophoto, a digital surface model, a point cloud or a 3D model. Accuracy is secured by surveyed ground control points – the outputs are tied to S-JTSK (national grid) and can be combined directly with other data.

The strength of drones lies in speed and repeatability: we can photograph the same site at regular intervals and follow the progress of construction, extraction or landfilling. For larger areas we move seamlessly to photography from an aircraft – you stay with a single supplier and a consistent methodology.

We fly in compliance with the rules for the operation of unmanned systems, including obtaining the permits required for the site in question.

Aerial data for small sites as well

Typical tasks

Where we deploy drones

  • Orthophotos and 3D models of smaller areas

  • Monitoring construction progress over time

  • Volumes of stockpiles, landfills and smaller quarries

  • Documentation of roofs and inaccessible structures

  • Source data for design work and site asset registers

  • Photographic documentation of sites from the air

Deliverables

What you can receive

Orthophoto of the site

A current, true-to-scale image of the area in high resolution.

GeoTIFF / JPEG

Point cloud

Photogrammetric point cloud for measurement and modelling.

LAS / LAZ

Digital surface model

DSM/DTM of the site for volume calculations and design.

GeoTIFF / TIN

3D model

Textured model of a site or structure for presentation and analysis.

OBJ / FBX

Oblique imagery

Photographic documentation of structures and of the site from the air.

JPEG

How it works

From enquiry to data

  1. 01

    Brief and permits

    We specify the site and the outputs; we check the flight conditions and the permits.

  2. 02

    Ground control points

    We survey the ground control points for precise georeferencing.

  3. 03

    Flight

    We capture the site with the required overlap and resolution.

  4. 04

    Processing and handover

    We process the outputs photogrammetrically and hand them over in the agreed formats.

Common questions

What you ask us most.

As a rule of thumb: sites of up to a few km² and tasks that need frequent repetition belong to the drone; extensive areas, whole towns and regions we photograph from an aircraft. Both technologies are our own, so we will recommend one according to the purpose and the budget.

With surveyed ground control points the outputs reach centimetre positional accuracy – enough for volume calculations, asset registers and design data. We document the accuracy in the technical report.

Drone operations are governed by the rules of the Civil Aviation Authority (Úřad pro civilní letectví); in some zones coordination or a permit is required. We handle the regulatory side as part of the contract.

Have a project where this fits?

Send an enquiry

Contact an expert

Ing. Tomáš Vybíral, Ph.D.

Ing. Tomáš Vybíral, Ph.D.

Team leader

3D scanning and mine surveying
Save contact
Drone data acquisition | GEOREAL