FOSS4G 2023

Bogdan Negrea

Team Lead GIS and Data IT34 A/S


Sessions

06-29
11:30
30min
Road condition assessment and inspection using deep learning
Bogdan Negrea

Road Surface Inspector is a system developed by IT34 with the purpose of speeding up the process of road damage registration by using deep learning. The time consuming process of inspection and registration of road damage is reduced significantly by using our Road Scanner Inspector app that can be placed in the windshield of any vehicle. The app records a video and gps coordinates, which are later processed in order to find different types of damage - potholes, cracks, damaged markings using deep learning.

The system can also detect other types of assets such as traffic signs, traffic lights, manholes and others that can be used in fx digitalization tasks.

The results of the image analysis are presented on a webgis portal as heatmaps presenting the condition of the road in the areas that were inspected using the app. The heatmaps are further used by the decision makers in order to prioritize the road maintenance work.

While using the app, Gps logs are built in realtime based on the positions sent by the phone while driving. These are further used for street inspection documentation.

Open source components.
Postgres + Postgis for storing the data and for geometry based analysis
PyTorch and Yolo7 for deep learning
OpenLayers for visualizing the images/detection results as rasters in webgis
Geoserver for publishing data as WMS/WFS
QGis as an external visualization tool for the data

Use cases & applications
UBT D / N113 - Second Floor
06-29
14:30
30min
Lidar data processing, management and visualisation in a browser using Pointview
Bogdan Negrea

Pointview is a product developed by IT34 for working with Lidar and Photogrammetry data. It gives the user the possibility to upload, process, visualize and work with data.

Lidar data formats such as LAS, LAZ, E57 can be uploaded, processed and visualized in the browser.

Photogrammetry: Images from drones or video from phones can be uploaded, processed into a 3d point cloud and visualized in a browser.

In addition, data can be captured using our SmartSurvey app that captures video which is used for building a 3d pointcloud, together with an ortophoto and dem. The data is later available for visualization in Pointview or in QGIS though a WFS service.

Moreover, the system offers a complete management system where the user can create projects for organizing the data, can share the data with other users and manage the access.

The system uses various data processing workflows for data processing based on open source components such as:
PostgresSql + Postgis for storing the data and for geometry based analysis.
OpenLayers for visualizing the images and ground control points results as rasters
Geoserver for publishing data as WMS/WFS,
QGis for visualizing data,
PDAL for lidar data processing,
GDAL for raster data processing,
CloudCompare for lidar data processing,
Potree for Data Visualization

Use cases & applications
Drini