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Introduction to mago3D, an Open Source Based Digital Twin Platform

This talk was given at the Busan Eco Delta City(Korea National Pilot Smart City) technical workshop held on 18th July. I talked about introduction and history of mago3D, some core technologies, real cases, and lessons learnt in this workshop.

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Introduction to mago3D, an Open Source Based
Digital Twin Platform
Sanghee Shin(shshin@gaia3d.com)
18th July 2019
<Busan Eco Delta City Technical Workshop>
MAGO
Goddess of earth
in Korean old myth
History
2014
Project started.
NSIP Program
2016
Live 3D Geo-Platform
Alpha version released.
2017
GeoBIM Platform
Version1.0 released.
2018
Digital Twin Platform
Successfully commercialized.
2019
Smart Spaces Platform
Version2.0 released.
Background – Paradigm Shift of Spatial IT
<Source: Steve Liang(2016)>
Background – Paradigm Shift of Spatial IT
<Source: Steve Liang(2016)>
Size of Space
Update Cycle
Small
1980
1990
2000
2010 ~
2020
Large
Static
Dynamic
<Source: Sagong, Hosang(2016), Policy Directions of Spatial Information for Hyper-connected Society>
Background – Paradigm Shift of Spatial IT

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Introduction to mago3D, an Open Source Based Digital Twin Platform

  • 1. Introduction to mago3D, an Open Source Based Digital Twin Platform Sanghee Shin(shshin@gaia3d.com) 18th July 2019 <Busan Eco Delta City Technical Workshop>
  • 2. MAGO Goddess of earth in Korean old myth
  • 3. History 2014 Project started. NSIP Program 2016 Live 3D Geo-Platform Alpha version released. 2017 GeoBIM Platform Version1.0 released. 2018 Digital Twin Platform Successfully commercialized. 2019 Smart Spaces Platform Version2.0 released.
  • 4. Background – Paradigm Shift of Spatial IT <Source: Steve Liang(2016)>
  • 5. Background – Paradigm Shift of Spatial IT <Source: Steve Liang(2016)>
  • 6. Size of Space Update Cycle Small 1980 1990 2000 2010 ~ 2020 Large Static Dynamic <Source: Sagong, Hosang(2016), Policy Directions of Spatial Information for Hyper-connected Society> Background – Paradigm Shift of Spatial IT
  • 7. <Source: Sagong, Hosang(2007)> Background – Paradigm Shift of Spatial IT
  • 8. Background – Paradigm Shift of Spatial IT Current Future Concept Object Information Context Awareness Data Consumer Prosumer/DIY User Person Things Visualization Real World Digital Twin Application Base Map Key Factor for Fusion Driving Entity Public Sector Private Sector Space Outdoor Indoor + Outdoor + Update Cycle Static Dynamic <Source: Sagong, Hosang(2016), ‘Policy Directions of Spatial Information for Hyper-connected Society’ modified>
  • 10. <Image Source: http://geospatial.net > Building Information Modeling (BIM) is a digital representation of physical and functional characteristics of a facility. GeoBIM: Geospatial + BIM
  • 12. GeoBIM Activities from Standard Bodies GIS CityGML GeospatialInformation GISStandards IFC BIM OutdoorModel IndoorModel BIMStandards Construction DrawingsInfo. In/Outdoor GIModel (GeospatialInformation Model)
  • 13. GeoBIM Activities from Private Companies
  • 14. GeoBIM Activities from Open Source Communities – mago3D
  • 15. Toward Digital Twin Platform!
  • 16. Toward Digital Twin Platform! Point Cloud Drone Image IoT CAD Live Data AEC Autonomous Cars GIS BIM CityGML Bottle Neck!
  • 17. Sensory Organs Memories Brain IoT(Internet of Things) Big Data A. I. Smartizen(10Bn) Smart Devices(100Bn) Smart Sensor(100Tn) Toward Digital Twin Platform!
  • 18. Digital Twins Digital Twins A digital twin is a virtual representation of a physical object or system across its lifecycle, using real-time data to enable understanding, learning and reasoning.
  • 19. Digital Twins Concept: Digital Informational Construct Vision: Create, Test, Build
  • 20. Digital Twins Level 1 3D Visualization Level 2 Real-time Monitoring Level 3 Analysis, Prediction Optimization <Source: Use the IoT Platform Reference Model to Plan Your IoT Business Solutions, Gartner>
  • 21. Introduction – mago3D mago3D is a platform for … Visualizing massive and complex 3D objects including BIM on a web browser 1 Seamless integration of BIM/AEC and 3D GIS in a single space2 Web based collaborative issue/process management4 ‘Digital Twin’ that can create parallel worlds in a virtual reality with numerous IoT, sensor data 3 = 3D + Web + Open Source
  • 22. Introduction – Architecture of mago3D mago3D.JS Cesium/WWW Client internet Web Server WAS F4DStorage mago Content Management DataBase F4D Converter 3 main cores of mago3D
  • 23. Introduction – Overall System Components DB Postgresql 9.6 + PostGIS Web Server Nginx 1.12.1 / Apache 2.4 Language Java8 Framework Spring(Springboot) + Mybatis Build Gradle Log Logback/Log4j 2 Security ESAPI Report Jasper/POI View JSP/JSTL UI/UX Jquery Chart Jqplot/Axisj Template Thymeleaf Handlebars Web Map Server GeoServer OS Centos 7.2 WebGL Globe Cesium, World Wind, … Cache EhCache, Redis Container Docker WAS Tomcat 8.5
  • 24. Introduction – Core parts of mago3D F4D Converter mago3D.js mago3D.js 3D GIS Engines Cesium Web World Wind API API service html F4D Converter converts 3D formats(IFC, 3DS, OBJ, DAE, JT) to 3D internet service format F4D. It carries out data size reducing and pre-processing for fast rendering A plug-in composed of pure javascript which enables 3D GIS engines to handle large-sized and highly detailed AEC data F4D Converter F4D .ifc .3ds .obj .dae .gml
  • 25. Introduction – mago3D.JS Cesium World Wind WebGL Globe
  • 26. Key Algorithms GeoBIM is too heavy due to so many vertices and triangles in so many objects. This causes two major issues in handling GeoBIM in web browsers. ! Network Traffic Rendering Speed
  • 27. Key Algorithms So we introduced 3 concepts to solve these issues. 1. Reducing file size 3. Preprocessing for speed 2. Building rougher LOD making indices used in culling removing duplication
  • 28. Key Algorithms Step What is this? Used for 1. Model/Reference A concept of writing 3D data that only one geometry among multiple geometries congruent with each other is written. reducing data size of semantic data(ex. BIM/CAD, 3D data by modeling) 2. NSM(Net Surface Mesh) This is composed of 2 steps. 1. building meshes with regularly gridded vertices on surfaces of raw 3D model. 2. triangle reduction. making rougher LOD ※ 2nd step is separately applied in simplifying targets in case of triangular meshes such like TIN or random-shaped 3D data 3. Visibility/Spatial index Visibility index is for occlusion culling and spatial index is for frustum culling in indoor camera working. carrying out a serial combination of 2 cullings for fast determination of targets to be shown Let’s look into more concretely.
  • 29. With 4 geometric meshes - 4 models 23 objects are created. - 23 references Image source : www.vecteezy.com Key Algorithms : F4D, lightweight service format Example of Model-Reference
  • 30. 1. Build a triangular mesh based on the grid structure from the original three-dimensional data. Key Algorithms : F4D, lightweight service format
  • 31. Key Algorithms : F4D, lightweight service format
  • 32. 1. When a camera position and 2. the viewing direction of it are setup, 3. mago3D does frustum culling on spatial indices 4. and do occlusion culling on the result of the frustum culling. 5. Finally mago3d finds targets to be rendered. (intersection between two indices) → It possible to select targets to be rendered without any complicated geometric operation in run-time. How to use both indices Key Algorithms : F4D, lightweight service format
  • 33. mago3D runs on any device Results: Accessible from any device, anytime, anywhere
  • 34. Results: BIM(Indoor/Outdoor) Integration Seamless integration of indoor and outdoor space on the same platform Scene from indoor to outdoor through windows Scene from outdoor to indoor through windows
  • 35. Results: MEP Integration Integration of large size MEP and 3D GIS on a web browser
  • 36. Results: AEC Integration Integration of large size AEC and 3D GIS on a web browser
  • 37. Results: CityGML Integration Integration of large size CityGML and 3D GIS on a web browser
  • 38. Results: Point Cloud Integration Integration of large size Point Cloud and 3D GIS on a web browser
  • 39. Results: OGC WPS Integration Integration of OGC Web Processing Service
  • 40. Results: Various API supported (OpenAPIs) APIs are supported for developing application systems(currently 29 APIs) moving/rotating a full building moving objects & viewing attributes registration/monitoring/search of issues
  • 41. Real Cases – Ship Building Industry Yards Cranes Office Buildings Factories Docks BlocksShips Smart Welding Machine Virtual Yard on Web Browser! 1,500 EA25 EA250 EA75 EA 25 EA 15,000 EA 1,700 EA 3 EA • Project Name: Ship Building Process Management System • 3D Models in Service
  • 42. Real Cases – Seoul C-ITS • Project Name: Seoul C-ITS Command & Control Center
  • 43. Real Cases – KOPRI(Korea Polar Research Institute) • Project Name: King Sejong Research Base Facility Management System
  • 44. Real Cases – National Institute of Advanced Industrial Science and Technology, Japan
  • 45. Real Cases – OpenIndoorMap Project
  • 46. Real Cases – Live Drone Map Project <Realtime geo-referencing>
  • 47. Real Cases: Point Cloud Integration 23
  • 49. Real Cases – Others
  • 50. What I’ve learnt from real projects • Visualizing large and complex objects is still challenging. • Many clients want to see *PRETTY* picture! • After seeing the pretty picture, many clients want a functionality that can be done through 2D or 2.5D. • 3D analysis, 3D simulation are among wish list that clients want to see on top of full of mago3D platform. • It’s still doubtful how 3D gives any real benefits over 2D. • 3D is expensive and BIM is more expensive! • Standards are not widely accepted across industries. • Standard based modular and distributed architecture is very important for extensible system.
  • 51. In Future 51 {Indoor, Outdoor} {Static, Dynamic} {Objects, Phenomena} {Overground, Underground} {Multi-Sensor, Multi-Source} mago3D
  • 52. In Future – Digital Twin based Smart City Platform <Source: ITU Focus Group on Smart Sustainable Cities>
  • 53. In Future – Digital Twin based Smart City Platform <Source: ISO/IEC JTC1/WG11> Stakeholders Vision & Outcomes Business Process Framework Knowledge Management Framework Engineering Framework
  • 54. In Future – Digital Twin based Smart City Platform <Source: OGC Smart Cities Spatial Information Framework>
  • 55. Summary Summary of mago3D! • BIM/AEC and 3D GIS integration in a single space • Web based – no need to install additional program • Massive and complex 3D objects visualization • Open source – Apache and AGPL license • Supports industry standard formats(CityGML, IndoorGML, IFC, 3DS, DAE, GLTF…) • In-Browser 3D objects moving/rotation/heading adjustment • Highly extensible architecture • Will be a ‘Digital Twin based Smart Spaces’ platform! 55
  • 56. For more information, please visit http://mago3d.net All the source codes are here: https://github.com/Gaia3D/mago3d Thank you! 33 This research was supported by a grant(number:19NSIP-B080778-06) from National Spatial Information Research Program (NSIP) funded by Ministry of Land, Infrastructure and Transport of Korean government. Sanghee Shin shshin@gaia3d.com