Photogrammetry

Aerial photogrammetry allows accurate models to measure reference points, obtain elevation profiles and other topographic activities.

PHOTOGRAMMETRY, A POWERFUL TECHNIQUE

Photogrammetry is a technique that allows  measurements over aerial photographs of surfaces, buildings or structures, once the scale is known. CANARD makes use of this technology on two of its most important applications: orthophotography and 3D reconstruction.

Orthophotography
3D Reconstruction

With orthophotography, we are able to create a high resolution (0.5 cm/pixel)orthophotomosaic of a surface from a set of georeferenced images captured with a drone. This way, the operator can perform activities such as surface inspection or field measurements without the limitations imposed by the terrain itself.

On the other hand, 3D reconstruction allows inspection of buildings, structures or terrain. Making use of a drone, we are able to obtain a set of aerial photos from all around the object of interest so that its 3D model can be generated. This model can be used by the operator for analysis, to take measurements, or even to analyse the presence of new objects or structures on the field.

ACCURATE MODELS FOR SEVERAL APPLICATIONS

Area & volume measurements

The models generated can be used to accurately measure areas and volumes. This is very useful for civil engineering for planning and monitoring progress.

Elevation profiles

The coordinates and elevation data can be used to generate digital surface models (DSM). This is a powerful tool to analyse elevation profiles and contour lines.

Obstacle/structure characterization

Accurately measure and characterise buildings, terrain features and obstacles. Both horizontal and vertical measurements can achieve cm-level accuracy.

Reference points measurements

Topographic surveying is very easy and quick thanks to these tools, as reference points and coordinates can be measured directly on the generated models.

SPECS & FAQ

1What is this solution useful for?

This solution is a quick and flexible solution for topographic activities, to help with planning and monitoring progress in civil engineering. It is also very useful to verify compliance with regulations.

2How long does it take to do a photogrammetry study?

Depending on the precisions required, it takes 10-30 minutes to cover an area of 15 hectares. In a day of work, it can cover 150 hectares.

4Can the solution be purchased?

Yes, in fact, we have designed all the tools so that anyone can do the inspections after receiving our training. Ask as for a quote to acquire the solution.

4Can you operate it with wind and rain?

Yes, we have performe inspections with SNOW and -10ºC, with up to 15-knot WINDS and even with light RAIN. Although the real benefit is that with this solution, you have the flexibility of taking advantages of small windows where the wind goes down or it stops raining.

5How far & high does the drone fly?

The drone can fly several km away and hundreds of meters high if needed. However, most regulaters require Visual Line of Sight with the drone.

6How long do the batteries last?

Depending on weather conditions, the batteries can last 15-25 minutes, which would cover around 15 hectares depending on several parameters. In any, case, it takes less than 1 minute to change batteries and fly again.

7How do you ship the drone to different locations?

All the equipment can be carried out as checked-in luggage with any commercial airline. We have reached the most remote locations taking up to 4 different flights with just 1 person without any issue. Batteries need to be carried as carry-on luggage.

8Can this solution perform all the types of inspections?

Yes, the system is able to do different types of visual inspections (PAPI, ALS, Lights), ILS measurements, photogrammetry and others. Al the capabilities are built into the same app. Contact us to get a quotation for a solution for multiple inspections.

9Does the drone fly autonomously?

Yes, the different tasks and flights are built into the app. The operator only needs to execute them and monitor the the drone flies according to plan. The drone goes to the required locations and takes the images needed to analyse the Lights. Once the tasks are executed, the report can be generated from the tablet.

10How accurate are the measurements?

We have achieved an accuracy of less than 5cm when measuring distances and heights.

CONTACT US TO GET A QUOTE FOR AN INSPECTION OR ACQUIRING OUR SOLUTION

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