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24:47 FOSS4G, Open Source Geospatial Foundation (OSGeo) English 2016

OpenSource tools for water network management

This presentation details some OpenSource tools dedicated to water network management, be it for water distribution or wastewater networks. The qWAT project is a specific tool based on QGIS and PostGIS. it aims at managing water distribution networks. The data model is part of the project and covers most use cases for this kind of assets. The qWAT project is strongly linked to QGIS, and tries to contribute to the core of QGIS so as to mutualize developments and features among other QGIS-based applications. Similarly, the QGEP project is dedicated to wastewater networks. We also present a use case for an implementation of a wastewater information system in France, based on QGIS and PostGIS. Furthermore, we show how PostGIS-based projects allow to do network and graph analysis, so as to extract meaningful information for decision-taking and planning. QGIS-Epanet and QGIS-SWMM are two QGIS Processing extensions integrating simulation features on water distribution and wastewater networks. They let the user run simulations to analyze the network, dimensioning, and identify specific issues. These set of tools show that OpenSource GIS now tend to fulfill use cases for specific fields of application, and water management is among them.
  • Published: 2016
  • Publisher: FOSS4G, Open Source Geospatial Foundation (OSGeo)
  • Language: English
26:16 FOSS4G, Open Source Geospatial Foundation (OSGeo) English 2016

iTowns, a new framework for 3D web visualization

We present iTowns, a web framework developed in Javascript / WebGL for 3D geospatial data visualization, with capabilities for precise measurement directly in the browser. The first use case of iTowns is Street-view data type visualization : immersive images, but also terrestrial LIDAR Point Cloud data. But iTowns now supports much more data types :  Oriented images Panoramic images Point Clouds 3D textured models WFS vector data iTowns OpenSource is the descendant of the initial iTowns software developed at MATIS research laboratory of the French National Mapping Agency. iTowns OpenSource version 1.0 has been released in February 2016. The framework allows to : - Visualize projected images on a mesh ( cube, 3D model) - Visualize panoramic images - Display depth panoramic images - Display extruded building ( from WFS, other sources ) - Navigate in 3D (click & go) - Display Point Clouds - Visualize textured 3D models ( B3D, 3DS) - Use a simple API We detail iTowns features with videos. The data showcased was acquired by IGN's Stereopolis car. Aside from presenting the software, its present state and the future 2.0 version, we also explain the project history, which is an interesting case of technology transfer from research to industry.
  • Published: 2016
  • Publisher: FOSS4G, Open Source Geospatial Foundation (OSGeo)
  • Language: English
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