Using Context Capture In 3D Modeling Preliminary Visualization · PDF file ·...

© 2014 Bentley Systems, IncorporatedMo Harmon, Solutions Executive, Roads and Bridges

Using Context Capture In 3D Modeling –Preliminary Visualization Production

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Industry Drivers

• Funding

Do More With Less

Innovative Solutions


Industry Drivers

• Funding

• FHWA – Every Day Counts


Industry Drivers

• Funding


• Technology


Advancing Reality Modeling with Context Capture

• Reality Modeling: Processing observations of existing conditions into representations for contextual alignment within design and construction modeling environments

– Not having to start from a blank canvas

– Using the reality as context for designing, building or operating assets


Context Capture Technology

Automates the generation of high-resolution, fully-3D representations from digital photographs

Taken with any camera, whether embedded in a smartphone…



… mounted on a drone…



… or a highly specialized, multi-directionalphotograph acquisition systems.


ContextCapture | From Sites to Cities

• Automatically produces a 3D ‘reality mesh’ from photographs–intrinsically in the same geometric idiom as engineering models, readily aligning the real-world context.

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


Surveying | Stockpile Volume Measurement


Surveying | Sewers


Streets

Cluny, France

Rural street, China


Urban Planning | Aligning Conceptual Design With Reality


Transportation | As-Built Structures Modeling


City Modeling

Sakae district,

Nagoya, Japan

Marseille, France

Paris (subset),

France


City Modeling

Philadelphia, Pennsyvania

In Preperation for the Pope’s visit

Planning tool

https://www.youtube.com/watch?v=mO_Lg8VtouY

https://www.youtube.com/watch?v=mO_Lg8VtouY

Using Context Capture in Preliminary Visualization Production

3D Modeling - Visualization

Video Production

Commercial

Photography

VERG Website:

Google “WSDOT VERG”

http://www.wsdot.wa.gov/business/visualcommunications/default.htm

http://www.wsdot.wa.gov/business/visualcommunications/VideoProduction.htm

http://www.wsdot.wa.gov/business/visualcommunications/CommercialPhotography.htm

http://www.wsdot.wa.gov/business/visualcommunications/Visualization.htm

Using Context Capture in Preliminary

Visualization Production

General Thoughts:

• Context Capture uses photography as a data collector and makes a 3D mesh model of the

area shot.

• Context Capture requires specific photo shooting techniques for best outcomes in 3D mesh

model production.

• Shoot your photos from many different angles and perspectives. Shoot from the ground,

elevated (boom truck) or use aerial photography from a helicopter, plane or UAVs.

• Get creative in using the 3D mesh model in your workflows! Use it to improve your “Visual

Voice” when explaining projects!

Before

• With visualization, the idea is to look into the future and see the change to infrastructure by

using 3D modeling to show that change. To do that, the existing conditions on the project site

must be documented in some way.

• With Context Capture, those existing conditions can be made into a 3D mesh model.

• Once that is done, export from Context Capture into MicroStation as a *obj file and start

modeling the infrastructure change (road, bridge, buildings, etc.). You will enjoy the speed and

accuracy of the Context Capture 3D mesh production and how it integrates into your modeling

workflows.



Final visualization product made with LumenRT GeoDesign

After



Recommendations for your Photo-Shoot :

• Learn about photography. Any type of image can be used, but higher resolution imagery will

give best results.

• If using a pro, semi pro camera & lens, set image type to RAW format.

• Keep focal length the same throughout the photo-shoot. This will make it easier for Context

Capture to integrate the imagery into it’s algorithms.

• Practice shooting different types of targets. The more imagery, the better. Maintain 60% or

more over-lap per image. Shoot in a panning motion per shot location.

• Before loading your image sequence into Context Capture, review imagery for detail. If there

are dark areas, lighten all the images so all the detail in the image can be seen (thus the

reason for shooting RAW images).

• Some targets are orbited in shooting (statue, building, etc.) while some targets are shoot

across (street scene, room, etc.). Practice shooting these two types of targets.

Example of “Orbit Shooting”:

• Again, fix the focal length / image frame to cover the area you want.

• Walk (or fly) around your target, taking many pictures with 60%+ overlap between images.

• Possibly transition into tighter or farther away orbits, still shooting images.

• Review imagery & submit to Context Capture!



Example of “Shooting Across”:

• Again, fix the focal length / image frame to cover the area you want.

• Walk around your target, shooting across the street, room, etc. to the other side of the target,

taking many pictures with 60%+ overlap between images. This technique is for enclosed areas.

• Take 5-6 images per spot in panoramic way. Move a few feet in one direction and repeat. Continue

all around, shooting across the target. Complete the circle and continue tighter or farther away.

• Review imagery & submit to Context Capture!



Questions?

Contact: Kurt Stiles, VERG Manager

360.709.8008/cell 360.628.7529

[email protected]

Using Context Capture In 3D Modeling Preliminary Visualization · PDF file ·...

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