Current Technolgies For Reality Capture Deck

© 2011 Autodesk

Current Technologies for Reality Capture

Jim [email protected]@pointknown

mailto:[email protected]

© 2011 Autodesk ecobuild

Objectives

§ Learn about reality capture and determine which method suites your needs

§ Utilize the following to create geometry for analysis§Satellite & Aerial images with as-builts§3D laser scanning§123D Catch (Photos)§Point Known PKNail Pro (laser range finder direct to Revit)

Streamlining Energy Analysis of Existing Buildings with Rapid Energy Modeling


Agenda

§ Brief “What is Rapid Energy Modeling”§ Capture techniques overview§ More Detailed Info on Capture Techniques

Aerial & Satellite Images with as-builts

3D Laser Scanning

123D Catch

PKNail§ Capture Summary


Why do we need Reality Capture?

§ Rapid Energy Modeling● Determine if a building is a good retrofit candidate● Prioritize retrofit investments● Lifecycle impact● Streamline asset rating

§ Sustainable Retrofits§ Adaptive Re-Use§ Asset Management

Streamlining Energy Analysis of Existing Buildings with Rapid Energy Modeling


Satellite Images

Photos

Aerial Images

Laser Distance Meters

capture model analyze

Rapid Energy Modeling

Image from Streamlining Energy Analysis of Existing Buildings with Rapid Energy Modeling.


Capture

© 2011 Autodesk

Comparison of Capture Techniques

Image adjusted from Streamlining Energy Analysis of Existing Buildings with Rapid Energy Modeling.

4.5

L M H

Granularity of captured data on existing conditions

1

Low High

Expertise required for reality capture (assumes building modeling and energy analysis expertise already exists)

Laser Scan

Photos

Laser Measure

Satellite Images

Aerial Images

Plans and Scale

Measuring Tape and

Wheel

Legend

5

3.0

3.02.5

Ideal Scenario

1.52.0

Non-ideal Scenario

rapid energy modeling workflows

Expensive

Cost Effective

0

1

2

3

4

5

6

7

8

9

10

Slow Rapid0 1 2 3 4 5 6 7 8 9 10


Considerations

§ Size and complexity of the project§ Interior/exterior§ Deadlines and time constraints§ Budget and available resources§ Frequency of existing building work§ Multiple uses for model

Expensive

Cost Effective

0

1

2

3

4

5

6

7

8

9

10

Slow Rapid0 1 2 3 4 5 6 7 8 9 10


Aerial & Satellite Imageswith As-builts

Aerial Images

Expensive

Cost Effective

0

1

2

3

4

5

6

7

8

9

10

Slow Rapid0 1 2 3 4 5 6 7 8 9 10


STEP 2

Aerial and Satellite Image

STEP 1

STEP 3*


Aerial and Satellite Image

Pros§ Quickly get 3D geometry§ Do not need to be onsite§ Not expensive

Cons§ Accuracy is based on user§ As-built drawings may not be accurate§ May need more information from FM


3D Laser Scanning

4.5

Laser Scan

Disclaimer: The following costs may vary depending on who is doing the scanning and the project. These are based on a case study.

Expensive

Cost Effective

0

1

2

3

4

5

6

7

8

9

10

Slow Rapid0 1 2 3 4 5 6 7 8 9 10


3D Laser Scanning – What is it?


3D Laser Scanning – Design Model vs. Energy Model


Converting Point Cloud to Revit

Import point cloud directly into Revit 20121. Trace over geometry yourself2. Use Scan-to-BIM or similar add-in to help

create geometry


3D Laser Scanning

Factors driving cost§ Time for scan§ Photos§ Building complexity§ Detail Level


3D Laser Scanning – When to Use

§ Complex, large buildings§ Limited time and resources§ Accuracy is important§ Rapidly advancing


123D Catch

Photos2.0

Expensive

Cost Effective

0

1

2

3

4

5

6

7

8

9

10

Slow Rapid0 1 2 3 4 5 6 7 8 9 10


123D Catch

Source Photos

Internet

Source Photos (jpeg or tif)

Photo Scene (3dp)

123D Catch Servers in the

cloud

Save (3dp)

Export(dwg, obj…etc)


123D Catch – Shooting the Right Pictures

Textured objects are preferred§ Avoid shiny, texture-less, and transparent objects§ Avoid white walls

Shiny Dusseldorf Buildinghttp://www.originallight.com/galleries/abstract/shiny_dusseldorf_building

TOO SHINY

WHITE WALLS

Seasonal Home Decoration Bloghttp://www.seasonalhomedecoration.com/apartment-with-light-wood-floors-painted-white-walls/

TRANSPARENT

Jet Settahttp://jetsetta.com/travel/origami-like-glass-building-spain/


123D Catch – Shooting the Right Pictures

§ Shoot around corners so that you find matches between adjacent sides.§ Rotate around the subject. Do not pan in front of it.

§ Wide angle lens

Object ObjectGOOD

RotatingBAD

Panning


123D Catch – When NOT to use

§ Very large, complex buildings§ Interior§ Buildings in densely populated areas§ Areas that have a lot of shadows§ White buildings§ All glass buildings


123D Catch – When to use

§Small Buildings§Open sites§A lot of daylight§Exterior of building


Laser Distance MeasurementsPKNail Pro

Laser Measure

3.0

Expensive

Cost Effective

0

1

2

3

4

5

6

7

8

9

10

Slow Rapid0 1 2 3 4 5 6 7 8 9 10


PKNail Pro – Controls Send Data

1. Press once = Build Wall2. Press twice = Build (Enter/OK)3. Toggle Selection (Wall angle)

1. Press once = Build Wall2. Press twice = Undo last command

Build WindowBuild Door


PKNail Pro


PKNail Pro – TROJB

§ Exterior Shell§ 1.5 day§ 80,000 SF§ < $0.01/SF


PKNail Pro – Autodesk (Waltham)

§ Exterior Shell§ 4 hours§ 60,000 SF§ < $0.01/SF


PKNail Pro – When to Use

§ Interior spaces § Exterior§ Repetitive and no as-builts§ Budget§ Accessibility§ Can Combine with Other Methods


Summary

Disclaimer: The following costs may vary, they are based on a case studies.


Comparison of Capture Techniques

Pay for service Free or minimalCosts of time

123D CATCH

$3400 Initial+yearly feePayback ~2 projectsCost of time

NONE* 1 week 1-2 weeks 1-2 weeks

YES NO YES YES

2-4 days

Clear viewHigher detail levelMay need full day of scanning to get pricing

May need info from FM

Clear view May need info from FM

YES NO YES NO

PKNAILAERIAL & SATELLITE

IMAGES

3D LASER SCANNING

Free Costs of time

COST

TRAINING

ONSITE

REDRAWING

ADDITONAL INFO

TIME (CAPTURE-MODEL)

ONSITE


In Summary…

Aerial & Satellite Affordable, quick and dirtyAs Builts

PKNail Affordable, builds model live with good accuracy

123D Catch Affordable, can work well for exterior with high detail level

3D Laser Scan Expensive, quick and high detail level


Considerations

§ Size and complexity of the project§ Interior/Exterior§ Deadlines and time constraints§ Budget and available resources§ Frequency of existing building work§ Multiple uses for model

Make a wish list and prioritize what you need/want! Image adjusted from Streamlining Energy Analysis of Existing

Buildings with Rapid Energy Modeling.

4.5

Laser Scan

Photos

Laser Measure

Satellite Images

Aerial Images

Plans and ScaleMeasuring

Tape and Wheel 3.0

3.02.5

Ideal Scenar

io1.52.0

Non-ideal Scenario

rapid energy modeling workflows

Expensive

Cost Effective

0

1

2

3

4

5

6

7

8

9

10

Slow Rapid0 1 2 3 4 5 6 7 8 9 10


Analyze

Current Technolgies For Reality Capture Deck

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