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UID:pretalx-foss4g-it-2023-ZFZ7DH@talks.staging.osgeo.org
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DESCRIPTION:The new concept of Digital Twins (DT) as a city model is interl
 inked with the Smart City applications on many levels\, like interactivity
  between virtual model and real world\, simulations and analysis of presen
 t and planned city\, emergency planning and management to mention a few. T
 he strength of DT is related to the incorporation of time as a fourth dime
 nsion\, considering the time as a variable that modifies the data and the 
 semantic information. The aim of this emerging concept  DT is provide a ph
 ysical infrastructure\, data\, information and procedures for the manageme
 nt of a complex system\, in order to offer to the public administration a 
 platform for designing\, testing\, simulations and analysis of present and
  planned city\, and offer through web-sharing high quality urban 3D model 
 as open data to all operators in Open Source (OS) environments. There are 
 several applications to share on the web a 3D model\, but the lack of a de
 tailed and adequately sized development platform is a bottleneck in this c
 ontest. The purposes of this work are based on the Torino DT project\, sou
 rce data for the 3D model had been acquired from images and point clouds d
 ata sets from 2022. The first step after the acquisition phase have been t
 he source data processing\, in order to build up a 3D model of the entire 
 city. There have been rapid technological developments in the field of pho
 togrammetric and LiDAR techniques to produce detailed and accurate 3D mode
 ls. 3D point clouds from the state of the art LiDAR and photogrammetry pro
 vides a powerful collection of geometric elements of a scene with their po
 sition\, orientation and shape in the 3D space. There are numerous compute
 r vision programs like 3D Zephyr\, VisualSfM\, meshroom\, WebODm etc which
  offers OS solutions for the  3D reconstruction processing from 2D images.
  The processing capabilities of these open source solutions are comparable
  as compared to the commercial ones in terms of geometric features and inf
 ormation. These open source tools are adequate for the research purposes t
 o explore the potential of 3D models from photogrammetry and LiDAR. 3D mod
 el is based on a reality mesh model with a specific and well-known work-fl
 ow. The next step is share\, part of\, the 3D model in OS environments tha
 t can be accessed with JavaScript code like Cesium platform. 3D web platfo
 rms analyzed in this work reflect the ever greater interest in OS software
 \, interoperability and collaboration standards\, in order to work in the 
 openness ecosystem. This research field open the way to new opportunities\
 , for instance DT as Open Data. The free availability of an urban 3D model
 \, build up from the reality\, could create a new order of opportunity for
  future model updates or utilizations\, especially for real estate operato
 rs. Furthermore\, particular attention has been paid to model update with 
 collaborative and crowdsourcing solutions\, with the perspective to develo
 p a community able to use and update the 3D model.
DTSTAMP:20260426T152734Z
LOCATION:Sala Videoconferenza @ PoliBa
SUMMARY:From real to virtual: sharing a urban 3d model as open data in open
  source environments - Luigi LA RICCIA\, Vittorio Scolamiero\, Yogender Ya
 dav
URL:https://talks.staging.osgeo.org/foss4g-it-2023/talk/ZFZ7DH/
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