The Point CLoud Server was developped to manage the billions and billions of Lidar point clouds that were produced daily by IGN mobile mapping system. RAther than deal with files, which limit sharing, gestion of metadata and concurrent editing, we chose to use a database server to store groups of points (patch). The system was successfully used for the PhD work and other projects, and is still being actively researched.
** A scalable and multi-purpose point cloud server (PCS) for easier and faster point cloud data management and processing**
In addition to the traditional Geographic Information System (GIS) data such as images (rasters) and vectors, point cloud data has become more available. It is appreciated for its precision and true three-Dimensional (3D) nature. However, managing point clouds can be difficult due to scaling problems and specificities of this data type. Several methods exist but are usually fairly specialised and solve only one aspect of the management problem. In this work, we propose a complete and efficient point cloud management system based on a database server that works on groups of points rather than individual points. This system is specifically designed to solve all the needs of point cloud users: fast loading, compressed storage, powerful filtering, easy data access and exporting, and integrated processing. Moreover, the system fully integrates metadata (like sensor position) and can conjointly use point clouds with other geospatial data, such as images, vectors, topology and other point clouds. The system also offers in-base processing for easy prototyping, parallel processing and scales well. Lastly, the system is built on open source technologies and generic and common hardware; therefore it can be easily extended and customised. We test the system will several billion points from point clouds from Lidar (aerial and terrestrial) and stereo-vision. We demonstrate >400 million pts=h loading speed, transparent-for-user and greater than 2 to 4:1 compression ratio, filtering in the approximately 50 ms range, and output of about a million pts=s, along with classical processing, such as object detection.