Deployment of drones (UAV)

unmanned aerial vehicle

TRIGIS uses flying drones in combination with high-resolution measuring cameras and heat image cameras.

The drone thus closes the gap between terrestrial surveying and aircraft supported aerophotogrammetry.

Survey and detailed photographs

The bird's eye view enables large-scale overviews allowing the recognition of existing structures, documents the ACTUAL status even for inaccessible locations, and delivers fast aerial maps and orthophotos.


  • Survey and detailed photographs (inspection, marketing, building documentation, surveying, etc.)
  • Video sequences (marketing, presentations)
  • Infrared images of objectsn

Your contact partner

Marc Orlamünder

Phone: +49 3643 24970
Fax: +49 3643 249779

Photogrammetric evaluations

We evaluate acquired photographs photogrammetrically.

This requires the determination and evaluation of control points for the exact orientation of the photographs in a position and elevation reference system. Following this step, the pixels of the aerial photographs are exactly evaluated geometrically and transferred to the CAD system.

High-resolution orthophotos
Orthophotos with topography


  • Orientation of the photographs
  • Control point identification
  • Derivation of high density point clouds
  • Generation of high-resolution orthophotos (measuring photos)
  • Generation of digital terrestrial models (DTM) and digital elevation models (DEM))
  • Generation of wire grid models (meshes))
  • Generation of 3D models
  • Derivation of position and elevation plans
high density point cloud
point cloud with true colors

Infrared images

Infrared images are ideally suited for the detection of hot spots on buildings, such as cold storage areas and storage depots, or for controlling solar collectors, transformers, etc.


  • Image flight planning and generation of infrared images
  • Evaluation of images and allocation of hot spots
  • Local identification of defective modules found in solar collectors
  • Identification of hot spots and cold spots on buildings and in the 3D model
Inspection of solar fields via heat image camera
Example photograph for detection of a defective module (bright / hot spot)

Technical data

The "Multirotor G4 Surveying Robot" hexacopter (manufacturer: GmbH) is used.


  • Carbon finished
  • Max. flight weight: 5 kg
  • Max. flight time per battery: 20 minutes
  • Flight control, flight data log
  • Live view

Either a photographic (RGB), video or IR heat image camera is installed on the drone.

In use with TRIGIS: MULTIROTOR G4 surveying robot
Image flight planning for a reservoir

Flight planning services

  • Obtaining the required approvals
  • Image flight planning:
    • Definition of the flight region
    • Flight elevation and speed
    • Longitudinal and transverse coverage of the photographs
    • Flight strips
    • Programming of the camera control


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