Today, our featured project is a highway asset management mission in northern Greece:https://cloud.pix4d.com/pro/project/263195/model?shareToken=ac1a042c-b241-427f-98b6-24018a951613
This is the story of this project:
“The goal of the project was to produce documentation for asset management of 11km of new highway and an as-built survey on a radius of 80 meters around it.
Our client required an accuracy of 10 cm.
The highway is in northern Greece, on a plain surrounded by mountains. The significant variations in terrain elevation posed a challenge, with the requested accuracy level in mind, we had to plan and adapt our mission to these topographic conditions.
We used a senseFly eBee Plus RTK drone with a S.O.D.A. camera. To plan the mission, we used eMotion, the planning software from senseFly that is capable of designing corridor mapping missions following SRTM DTM models.
In less than two hours, we captured 1300 images, mapping 11km of highway, covering an area of 3.7Km__2
We processed the dataset using Pix4Dmapper software on a desktop device. The RTK GNNS receiver in the eBee Plus provided solid and highly accurate geotags to the images.
The resulting product had a mean GSD of 3.17cm.
We assessed the accuracy of the project using 4 checkpoints where the mean DX and DY was 1.2 x GSD and DZ was 2 x GSD. These results were below the 10cm accuracy required by our client.
These are final deliverables we provided to our client:
- _ _3D point cloud in las format
- _ _3D textured mesh in .fbx format
- _ _Orthomosaic
- _ _DSM
The benefits of drone-mapping for highway asset management go beyond time savings -over 80% compared with traditional surveying techniques-; as it is unobtrusive, it possible to perform the survey while the highway remains fully operational, without disrupting the normal traffic.
The rich data and highly accurate deliverables produced with Pix4Dmapper outperformed the initial request providing a complete and clear real-world digital reconstruction.” Vassilis Polychronos, CTO of GeoSense.
Device used: eBee Plus RTK drone with a S.O.D.A. camera
Image capture path: corridor mapping
Number of images: 1300
Pix4D software used: Pix4Dmapper
Processing platform: desktop device
Enjoy your virtual visit, feel free to ask questions, share comments and your own projects.