3D photogrammetry
We create 3D models from photographs, from small objects to terrain, buildings and monuments. To learn more, see the Wikipedia article on photogrammetry.
Request a quote+351 928 204 673How 3D photogrammetry works
Photogrammetry rebuilds three-dimensional models from overlapping photographs. Scale, detail and the quality of the result depend on the object's geometry and texture, the capture conditions, the distribution of the images and the presence of dimensional references when measurements are needed. Before the project, we assess whether the method is suitable for the intended application.
Services for the industrial, agricultural, civil and cultural sectors
3D photogrammetry work and applications
Six of the roughly 190 angles photographed of a sneaker to rebuild it in 3D.
How it works
Photogrammetry rebuilds the shape of an object or a place from many photographs taken from different positions, with overlap between them. The software identifies the same points across several images and calculates their position in space. The result is a point cloud, which is turned into a 3D mesh with the real texture of the photographs.
What you receive from 3D photogrammetry
3D photogrammetry or 3D scanner?
| Photogrammetry | 3D scanner | |
|---|---|---|
| Object size | Large or very large (buildings, terrain, monuments) | Small to medium, up to a few metres |
| Colour and texture | Very good, with real colours | Good, depending on the equipment |
| Accuracy on small parts | Lower | Very high |
| Equipment on site | Camera | Scanner and, sometimes, markers |
For industrial parts with tight tolerances, the 3D scanner is the best choice. Photogrammetry is unbeatable when the object is large and colour matters.
Where it applies and what makes the difference
Quality depends on the overlap between photographs, the light, the resolution and the distance to the surface. To obtain reliable measurements, we use scale references or control points on site. Very smooth, shiny or transparent surfaces are difficult for photogrammetry; we tell you straight away if another technique would suit better.
How we do 3D photogrammetry
Capture planning
We define the route and the number of photographs needed.
Image collection
Next, we photograph the object or place with controlled overlap.
Processing
Then we generate the point cloud and the 3D model in specialised software.
Delivery
Polygonal or parametric models, elevation maps and measurements.
Frequently asked questions
Can I use photographs I already have?
In some cases yes, if there is enough overlap and good quality. Send them and we will tell you whether they will do.
What accuracy can I expect?
It depends on the size of the object and the resolution of the images. For projects with measurements, we agree with you the accuracy needed and how to verify it.
Can you photograph a building or a piece of land?
Yes. We plan the capture route and the scale references before going on site.
How long does it take?
The work on site is usually quick; processing depends on the number of images and the quality requested. We state the deadline in the proposal.
Which formats do you deliver?
Point clouds and meshes in common formats (for example OBJ, PLY, LAS), orthophotos as images and measurements as PDF.
Questions? Talk to us
Call us or send us a message and we will reply as quickly as possible.
Request a quote+351 928 204 673