Drone surveying: photogrammetry and LiDAR
Photogrammetry and laser technology (Lidar) are two different and complementary approaches used for data collection and the creation of 3D models.
Photogrammetry uses photographs to reconstruct 3D models
based on parallax, while Lidar uses lasers to measure directly
the distance and create accurate 3D models, even through vegetation or
in less bright lighting conditions.
Each method has its advantages, and that's because we are
capable of leveraging the best of both technologies that we can
to fully support you in your projects in Annecy,
in the Auvergne Rhône Alpes region and throughout France.
SPEED AND EFFICIENCY
Thanks to their high-resolution cameras, drones can collect topographic data over vast areas in a considerably reduced time: a significant time saving in data collection which helps to accelerate project planning.
Drone photogrammetry provides easy access to areas that are otherwise difficult to reach or potentially dangerous for operators. Our qualified pilots operate in accordance with the strictest safety standards, while collecting the data you need for your project. Avoid risks to your teams by opting for an aerial solution. It also minimizes disruption to users.
REDUCED COST
Topographic surveys using drones are generally more economical than traditional methods because they require less manpower and equipment. Drones can be deployed quickly and with fewer resources, thus reducing associated costs.
HIGH PRECISION AND RESOLUTION
Topographic surveys using photogrammetry or lidar by drone offer several advantages over traditional field survey methods.
The Benefits of Combining Topography, Photogrammetry, and Drone-Mounted LIDAR Sensors
Our topographic survey process
using drones and processing
using photogrammetry
We define flight plans in the office to capture a large number of images of the site with a high degree of coverage.
We are skilled at flying in flat areas, sloping areas, areas that are difficult to access (gorges, cliffs, etc.), and also indoors.
After the flights, these images are assembled and then processed using photogrammetry. This results in a cloud of several million points, which is then processed and cleaned to produce the topographic survey.
Topography and photogrammetry:
deliverables tailored to your needs
Photogrammetric surveys can generate different types of deliverables, depending on the specific needs of the project. They can be provided in formats suitable for computer-aided design (CAD) software, geographic information systems (GIS), or other visualization and analysis tools.
POINT CLOUDS
We can provide a dense point cloud processed by photogrammetry, providing an accurate representation of the shape and position of terrain features. Point clouds can be used to create 3D models, analyze building structures, detect changes, or simulate scenarios.
Drawings and topographic plans:
Using data collected by drone, it is possible to generate detailed drawings and topographic plans. These deliverables typically include contour lines, cross-sections, profiles,
sections, control points, and other information relevant to engineering and construction projects.
DRONE CUBE MEASUREMENT
Drone-based volumetric measurement is an accurate and efficient method for measuring the volume of materials or land in various fields such as construction, mining, the environment, logistics, and hydraulic engineering. We can provide you with accurate data to improve resource planning and management.
Topography, photogrammetry, and LIDAR: examples of projects
