Print Email Facebook Twitter Taming the beast: Free and open-source massive point cloud web visualization Title Taming the beast: Free and open-source massive point cloud web visualization Author Martinez-Rubi, O. Verhoeven, S. Van Meersbergen, M. Schûtz, M. Van Oosterom, P. Gonçalves, R. Tijssen, T. Faculty Architecture and The Built Environment Department OTB Date 2015-11-25 Abstract Powered by WebGL, some renderers have recently become available for the visualization of point cloud data over the web, for example Plasio or Potree. We have extended Potree to be able to visualize massive point clouds and we have successfully used it with the second national Lidar survey of the Netherlands, AHN2, with 640 billion points. In addition to the visualization, the publicly available service at ttp://ahn2.pointclouds.nl/ also features a multi-resolution download tool, a geographic name search bar, a measurement toolkit, a 2D orientation map with field of view depiction, a demo mode and the tuning of the visualization parameters. Potree relies on reorganizing the point cloud data into an multi-resolution octree data structure. However, this reorganization is very time consuming for massive data sets. Hence, we have used a divide and conquer approach to decrease the octree creation time. To achieve such performance improvement we divided the entire space into smaller cells, generated an octree for each of them in a distributed manner and then we merged them into a single massive octree. The merging is possible because the extent of all the nodes of the octrees is known and fixed. All the developed tools are free and open-source (FOSS) and they can be used to visualize over the web other massive point clouds. To reference this document use: http://resolver.tudelft.nl/uuid:0472e0d1-ec75-465a-840e-fd53d427c177 Publisher The Servey Association Source Capturing Reality Forum 2015, 23-25 November 2015, Salzburg, Austria Part of collection Institutional Repository Document type conference paper Rights (c) 2015 Martinez-Rubi, O.Verhoeven, S.Van Meersbergen, M.Schûtz, M.Van Oosterom, P.Gonçalves, R.Tijssen, T. Files PDF taming-beast-free-1.pdf 10.67 MB Close viewer /islandora/object/uuid:0472e0d1-ec75-465a-840e-fd53d427c177/datastream/OBJ/view