3D Cities Rendering and Visualisation: A Web-Based

Solution

Noura El Haje, Jean Pierre Jessel, Véronique Gaildrat, Cédric Sanza

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To cite this version:

Noura El Haje, Jean Pierre Jessel, Véronique Gaildrat, Cédric Sanza. 3D Cities Rendering and Visualisation:

A Web-Based Solution. Eurographics Workshop on Urban Data Modelling and Visualisation

(UDMV 2016), Dec 2016, Liege, Belgium. pp. 95-100. ￿hal-01787406￿

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• Cesium

• 3D Tiles

• Point clouds: streaming visualization, fusion, styling, compressing

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Open-source JavaScript library for world-class 3D globes and maps

Apache 2.0 license

No plugins, cross platform, cross browser, cross device

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3D content pipelines

The best available tiling tools to

optimize a variety of data for

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streaming

Analysis

GPU-accelerated 3D geospatial

analysis

Curated 3D content

Ready-to-stream 3D assets

Cesium is a

software platform

for making 3D

geospatial data

easier to visualize,

analyze, and share.

Streamable formats

Web-friendly open standards for 3D

streaming

Visualization

Open source web-based runtime

engine

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DRIVING SIMULATIONS FOR AUTONOMOUS VEHICLES WITH 3D TILES AND CESIUM

•Open source JavaScript library for rendering 3D globes and 2D maps

•Apache 2.0 License

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•Runs in a browser and on mobile

•Cesium ion

•Online service for processing and efficiently streaming data

•Accepts point clouds, terrain, imagery, photogrammetry, BIM/CAD models, CityGML

•Free for non commercial use/paid enterprise accounts

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3D Tiles

Tileset JSON

Defines spatial layout for the tileset

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Relative paths to tiles

May point to external tilesets

Tiles

Contains the actual data

Binary formats

b3dm (buildings, photogrammetry, BIM)

i3dm (instanced models)

pnts (point clouds)

vctr (vector)

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Digital Twins with Cesium & iModel

What is Cesium?

● Cesium is the platform for 3D geospatial

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● Show platform diagram

● Point out client JS engine

● Online platform hosting and finding data.

● Open standards is key.

● Show how iModelJS fits in

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Autonomous cars use many sensor typesthat generate TBs of data

•LIDAR

•Camera

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•Radar

•Sonar

•GPS, gyroscope, accelerometer

Plus HD mapswith semantic data

Simulationallows

•Playbackand real-time inspectionof a car’s behavior and environment

•Testingnew algorithms/scenarios/sensors in a virtualreal-world reconstruction or virtual syntheticenvironment

•Drastically reduces the amount of road testing

4.12 million milesof roads in the US alone!

Why Simulation?

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CITYGML, 3D TILES AND CESIUM

A Data Fusion Symphony

Shehzan Mohammed

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Cesium

zmohammed@agi.com

@shehzanm

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