Photorealistic Gaussian splat of a Swiss town from the air, created from a drone survey

Precise surveying.
Clear decisions.

High-resolution geodata. The right solution for every project.

Geotrend is one of the recognised specialists in airborne surveying. Whether drone, helicopter or aeroplane, we have the right aircraft and the right sensors for every task. You receive everything from one source.
For complementary services we draw on an established network of proven partners. You do not need to be a surveying expert. We speak your language, understand your requirements and develop together with you the solutions that truly add value to your project.

Martin Clement Founder and Managing Director

Drone, heli & plane

Drone, helicopter or aeroplane with matched sensors for every project size and type of terrain

Two generations

Experience in airborne surveying since the 1990s

In-house developments

Custom-built sensor mounts and optimised workflows for the best possible data quality

Simultaneous capture

Complementary sensor data recorded at the same moment for perfectly synchronised datasets

Photorealistic 3D scenes

Gaussian Splats

Explore your project photorealistically and from every angle. Gaussian splats show complex details, vegetation and reflective surfaces without the artefacts typical of a mesh, ideal for competitions, documentation and project decisions.

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Explorable 3D scene as a Gaussian splat, buildings and surroundings in detail from an oblique view

High-precision models with texture

3D Meshes

Georeferenced, textured triangle meshes for direct further processing in CAD, building information modelling (BIM) and GIS. The dimensionally accurate basis for urban planning, structural analyses and digital twins.

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Textured 3D mesh of a Swiss city from the air, railway station, office buildings and streets with finely resolved mesh geometry

As-built models, outside and inside

Building Modelling

As-built 3D models true to deformation, from merged airborne and ground-based surveys. We turn building envelopes, roof structures and interiors into structured CAD and BIM data, a reliable basis for conversions, heritage conservation and facility management.

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Cutaway 3D as-built model of a historic building with roof structure, floors and staircase

Every building of a municipality in 3D

City Models

Comprehensive three-dimensional building solids with exact roof shapes, dormers and optional photographic texture, from aerial images and point clouds. Ideal for municipal geoportals, solar potential analyses, development plans and microclimate simulations.

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Textured city model of Chur city centre seen at an oblique angle, commercial and residential buildings with courtyards, streets and trees, the roofs of the railway station at the bottom right

Aerial imagery without distortion

True and CIR Orthophotos

True orthophotos entirely free of building lean keep street spaces, track systems and facade lines clearly visible. Combined with colour infrared (CIR), they provide a dimensionally accurate basis for environmental monitoring, forest vitality analyses and municipal GIS portals.

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RGB

CIR orthophoto (colour infrared), vegetation appears red

CIR

Millions of classified measurement points

Classified Point Clouds

High-density 3D point data from photogrammetry and LiDAR, separated semantically into ground, vegetation, buildings and power lines. Directly compatible with common specialist software for route inspections, terrain model derivation and BIM processes.

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Classified point cloud from the air, vegetation green, buildings red, bridge yellow, power line and ground separated by colour

Digital terrain and surface models

Elevation Models, Environmental Monitoring and Planning

High-precision raster elevation models capture the true ground relief as well as the visible geometry of buildings and vegetation. They serve as a reliable basis for hydraulic simulations, slope stability analyses, volume calculations and forest growth heights.

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Digital terrain model (DTM) of the Tamins area with elevation colours and hillshade, showing the Rhine valley, slopes and terrain edges

See what the eye cannot see

Multispectral and NIR Imagery

Calibrated narrowband and infrared sensors capture spectral reflectance and surface temperatures beyond the visible spectrum. Indispensable for forest vitality analyses, moisture mapping along watercourses and thermographic quality checks of large photovoltaic plants.

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Multispectral NDVI analysis from the air, vegetation vitality in false colours, crops, soil and woodland clearly distinguishable

Safe and efficient from the air

Inspections, Detail Imagery and Corridor Mapping

High-resolution close-up surveys and corridor flights for overhead lines, engineering structures, railway bodies and roof structures, without interrupting operations. Dense image data and centimetre-accurate point clouds document the structural condition completely and make damage easy to locate early.

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Drone inspection image of a high-voltage power line, insulators and tension clamps in detail against a mountain backdrop

Answers from aerial images and point clouds

Analyses

We turn primary data into reliable planning documents for infrastructure operators and engineers. This includes standardised clearance gauge checks, risk analyses of overhead line corridors where vegetation or falling trees are a danger, and precise volume calculations and terrain comparisons.

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Point cloud of a power line corridor seen obliquely from above, with the vegetation along the conductors coloured from green through orange to red according to its distance from the cable

Impressions from our projects

Compatibility

Tailored to your software

Whether CAD, BIM, GIS or 3D visualisation, we deliver all data in the right file format, with suitable tiling and in the coordinate system you need, so everything works in your software without extra steps.