john taylor - bentley systems

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John Taylor, Senior Director, Bentley Systems

Innovations in Reality Modelling for Asset Management


What is Reality Modelling?

• Reality Modelling: Processing observations of the existing physical environment into 3D representations to provide current context within geospatial or design modelling environments

– Not having to start from a blank canvas

– Using the reality as context whether you are:

• designing, building or operating infrastructure or

• modelling the physical environment


ContextCapture | From Sites to Cities

• Automatically produces a 3D ‘reality mesh’ from photographs.

• Existing conditions are considered throughout the architecture, engineering, construction, and operations of any infrastructure asset

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What is a Reality Mesh?

• A 3D surface model created from photographs

• Georeferenced

• Accurate

• Realistic

• Interactive


ContextCapture for all stages of the infrastructure asset lifecycle

• 4 core outputs:

– The 3D model – known as a 3D Mesh Model or a Reality Model

– DSM – Digital Surface Model –essentially the 3D Model as a wireframe without the textures

– Point cloud data

– TrueOrtho Imagery – fully corrected overhead imagery


Reality Modelling across the Asset Lifecycle

Understand the

existing

conditions

Change

detection

Risk

management

Archive

construction

information

3D Inspection

Surveying asset

performance

Training and

simulation


Information Mobility

3D Mesh / point cloud / DEM / DSM

BIM

GIS / 3D Maps

CAD

3D Mesh / Orthophoto /

DSM / DEM

WebGL / Caesium

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Some examples of how Reality Models are being used


Applications of Reality Models

Inspections & Detailed Modelling - fixed structures and terrain

Physical change over time –landslip, mudslides, flooding, structural collapse

Visualising dynamic environmental

conditions —time of day, seasons,

vegetation, people, vehicles, etc.


GIS Integration


Referencing imagery using the model


Reality Modelling Demonstration


Demo examples

• Auckland Airport – repurposing Survey Imagery

• Adelaide – cityscapes as context

• Rail - Multi-resolution

• WebGL – Browser 3d Modelling

https://cedarville01.blob.core.windows.net/coatesville-flats/App/index.html#%2F


Reality Modelling: Key Takeaways

• Accuracy: better than 50mm accuracy from aerial capture, higher accuracy using terrestrial imagery and close range UAV

• Interoperable data: Provides rapid contextual information to optimise project design, delivery and asset management

• Ease of use: if it can be imaged it can be modelled

• Cost Savings: offers order of magnitude savings over similar levels of data capture using traditional techniques

• Up to Date: models can be maintained and updated more regularly – Continuous Survey


Legacy BIM in 3 easy steps?

John Taylor, Senior Director Reality Modelling

Email: [email protected]

1.Capture

2.Model

3.Maintain

mailto:[email protected]

john taylor - bentley systems

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