UAV/Drone Photogrammetry

Aerial surveys for terrain, roofs and visual documentation.

We capture large areas, façades, surroundings and roofs with UAV/Drone, generating orthophotos, digital models and useful data for design and construction.

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Aerial captureVisual documentation of large and hard-to-access areas, with validation of necessary flight permissions.

OrthophotosGeoreferenced images for reading and measurement.

Digital modelsUseful data for terrain, volumes and urban context.

Site and inspectionVisual support for architecture, industry and heritage.

Main Photogrammetry Techniques:

• Aerial Mapping: We create high-resolution maps for agriculture, urban planning and environmental monitoring, ideal for strategic decision-making.

• 3D Modelling: We generate detailed three-dimensional models of terrain, structures and objects, useful in architecture, archaeology and construction.

• Volume Calculation: We carry out precise volume measurements for stock control, excavations and resource management in engineering and mining projects.

Advantages of Photogrammetry:

• High Accuracy: Ensures highly reliable measurements and models, ideal for sectors that require technical precision.

• Cost Efficiency: Reduces time and resources by replacing traditional methods with aerial surveys using drones.

• Clear Data Visualisation: Detailed 3D models and maps make the analysis and communication of complex information easier.

• Data Capture in Difficult Areas: Allows data collection in remote or hazardous areas with reduced human risk.

• Comprehensive Aerial Surveys: Applicable in areas such as forestry, mining and environmental studies, providing critical data for planning.

Digital Terrain Model (DTM)

What Is a Digital Terrain Model (DTM)?

A Digital Terrain Model is an accurate three-dimensional representation of the Earth's surface, based on elevation points obtained through topographic surveys, drones, remote sensors or satellite imagery. These points are processed to generate a digital mesh that precisely reflects the terrain's morphology.

How Does a DTM Work?

The DTM is an essential tool for planning and analysis in engineering, architecture, environmental work and public infrastructure projects. It allows the calculation of slopes, volumes, infrastructure alignment, erosion risk assessment and drainage planning, among many other applications.

The Role of Contour Lines

Together with contour lines, the DTM provides a clear understanding of altimetric variations. These lines connect points of equal elevation and are fundamental for producing topographic plans and geospatial analysis models.

At SupremeXpansion, we generate high-resolution DTMs tailored to the scale and detail required for each project, ensuring reliable technical data for well-founded decisions.

Uses and Applications of DTM and Contour Lines

Digital Terrain Models and contour lines are versatile tools with multiple practical applications:

• Cartography: Accurate representation of terrain on topographic maps.

• Engineering: Planning works, roads and drainage systems based on terrain morphology.

• Urban Planning: Terrain analysis to support urban development and mitigate natural risks.

• Geology: Study of soil structure and identification of geological formations.

• Natural Resource Management: Support in forest conservation, water management and sustainable land use.

Point Clouds Using Photogrammetry

What Is Photogrammetry?

Photogrammetry is an advanced technique that transforms two-dimensional images into highly accurate three-dimensional representations. By capturing multiple photographs of an object or area from different angles and processing them with specialised software, it is possible to generate dense and detailed point clouds — sets of millions of points that represent the real geometry of surfaces, structures or terrain.

How Does It Work?

The process begins with image collection, usually performed by UAVs/drones or terrestrial cameras. From the overlapping of these images, the software identifies common points — called control points — and calculates their position in three-dimensional space. The result is a point cloud that accurately reflects the shape, dimension and texture of the captured object or environment.

Advantages

High accuracy: Ideal for measurement, documentation and modelling.
Versatility: Applicable to terrain, façades, interiors, heritage sites, etc.
Cost-effective: Reduces the need for traditional surveying equipment.
Clear visualisation: Enables analysis and simulations in a digital 3D environment.

At SupremeXpansion, we combine photogrammetry with our modelling and surveying expertise to deliver reliable point clouds, ready to be integrated at any project stage.

Applications of Point Clouds in Photogrammetry:

1. Mapping and Topography: Generation of accurate topographic maps and digital terrain models.

2. Civil Engineering: Support for planning and monitoring works such as roads, bridges and buildings.

3. Heritage Preservation: 3D documentation of monuments and historic sites for conservation and restoration.

4. Precision Agriculture: Crop analysis, pest detection and efficient irrigation management based on terrain and volume.

5. Geology and Mining: Mine modelling, terrain analysis and evaluation of mineral deposits.

How it works

From quote request to final delivery.

A clear flow for aerial surveying, production and final data delivery.

Quote and flight permissions

We receive the request and confirm area, objective, capture conditions and required flight permissions.

Aerial survey

We carry out drone capture on site according to the technical and legal framework.

Data production

We process images, orthophotos, digital models and project support data.

Final delivery

We deliver orthophotos, models, images and agreed documentation.

FAQ

Frequently asked questions

Does the drone replace Laser Scan?

Not necessarily. Drone work complements Laser Scan when aerial context, roofs, terrain or hard-to-access areas are needed.

What deliverables can be produced?

Orthophotos, technical images, digital models, point clouds and support data according to the project objective.

Can drone data be combined with BIM?

Yes. Aerial capture can be combined with Laser Scan and modelling to enrich the technical documentation.