Summary of existing technologies to capture existing buildings digitally and using them inside of a BIM platform and/or energy modeling tools. Laser scanning, 123D Catch, PKNail, and satellite imagery. It is a shorter version of the deck used/created by Jess Miller at Autodesk University, 2011.

1. Current Technologies for Reality Capture
Jim Foster
PointKnown
jfoster@pointknown.com
@pointknown
© 2011 Autodesk

2. 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
ecobuild © 2011 Autodesk

3. 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
ecobuild © 2011 Autodesk

4. 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
ecobuild © 2011 Autodesk

5. Rapid Energy Modeling
Satellite
Images
Photos
Aerial
Images
Laser Distance
Meters
capture model analyze
Image from Streamlining Energy Analysis of Existing Buildings with Rapid Energy Modeling.
ecobuild © 2011 Autodesk

6. Capture
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7. Comparison of Capture Techniques
Cost
Effective
Aerial Images Ideal
Photos Scenario
2. 1.5
Plans and Satellite Legend
0
Scale 3.0 Images Expertise required
9
4
2. Laser rapid energy for reality capture
Measuring 5 modeling (assumes building L M H
Measure
Tape and 3.0 modeling and
8
workflows
3
Wheel energy analysis
Slow 0 1 2 3 4 5 6 7 Rapid expertise already
7
2
8 9 10 exists)
5
1
Laser Scan
1
6
Low High
4.5
10
Granularity of
0
5
captured data
on existing
conditions
Non-ideal
Scenario Expensive
Image adjusted from Streamlining Energy Analysis of Existing Buildings with Rapid Energy Modeling.
© 2011 Autodesk

8. Considerations
Cost
Effective
§ Size and complexity of the project
§ Interior/exterior
9
4
§ Deadlines and time constraints
8
3
§ Budget and available resources Slow 0 1 2 3 4 5 6 7 Rapid
7
2
8 9 10
§ Frequency of existing building work
§ Multiple uses for model
1
6
10
0
5
Expensive
ecobuild © 2011 Autodesk

9. Cost
Effective
Aerial Images
9
4
Aerial & Satellite Images
8
3
Slow 0 1 2 3 4 5 6 7 Rapid
with As-builts
7
2
8 9 10
1
6
10
0
5
Expensive
ecobuild © 2011 Autodesk

10. Aerial and Satellite Image
STEP 2
STEP 1
STEP 3*
ecobuild © 2011 Autodesk

11. 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
ecobuild © 2011 Autodesk

12. Cost
Effective
9
4
3D Laser Scanning
8
3
Slow 0 1 2 3 4 5 6 7 Rapid
7
2
8 9 10
1
Laser Scan
6
4.5
10
0
5
Expensive
Disclaimer: The following costs may vary depending on
who is doing the scanning and the project. These are based
on a case study.
ecobuild © 2011 Autodesk

13. 3D Laser Scanning – What is it?
ecobuild © 2011 Autodesk

14. 3D Laser Scanning – Design Model vs. Energy Model
ecobuild © 2011 Autodesk

15. Converting Point Cloud to Revit
Import point cloud directly into Revit 2012
1. Trace over geometry yourself
2. Use Scan-to-BIM or similar add-in to help
create geometry
ecobuild © 2011 Autodesk

16. 3D Laser Scanning
Factors driving cost
§ Time for scan
§ Photos
§ Building complexity
§ Detail Level
ecobuild © 2011 Autodesk

17. 3D Laser Scanning – When to Use
§ Complex, large buildings
§ Limited time and resources
§ Accuracy is important
§ Rapidly advancing
ecobuild © 2011 Autodesk

18. Cost
Effective
Photos
2.
0
9
4
8
3
123D Catch Slow 0 1 2 3 4 5 6 7 Rapid
7
2
8 9 10
1
6
10
0
5
Expensive
ecobuild © 2011 Autodesk

19. 123D Catch
Source Photos
(jpeg or tif)
123D Catch
Servers in the
cloud
Source
Internet
Photos
Photo Scene (3dp)
Save Export
(3dp) (dwg, obj…etc)
ecobuild © 2011 Autodesk

20. 123D Catch – Shooting the Right Pictures
WHITE WALLS
Textured objects are preferred
§ Avoid shiny, texture-less, and transparent objects
§ Avoid white walls
TOO SHINY
TRANSPARENT Seasonal Home Decoration Blog
http://www.seasonalhomedecoration.com/apartmen
t-with-light-wood-floors-painted-white-walls/
Shiny Dusseldorf Building
http://www.originallight.com/galleries/abstract/shiny Jet Setta
_dusseldorf_building http://jetsetta.com/travel/origami-like-glass-
building-spain/
ecobuild © 2011 Autodesk

21. 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
BAD GOOD
Object Object Rotating
Panning
ecobuild © 2011 Autodesk

22. 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
ecobuild © 2011 Autodesk

23. 123D Catch – When to use
§Small Buildings
§Open sites
§A lot of daylight
§Exterior of building
ecobuild © 2011 Autodesk

24. Cost
Effective
3.0
9
4
Laser
Measure
Laser Distance
8
3
Slow 0 1 2 3 4 5 6 7 Rapid
Measurements
7
2
8 9 10
PKNail Pro
1
6
10
0
5
Expensive
ecobuild © 2011 Autodesk

25. Send Data
PKNail Pro BuildControls
– Window Build Door
1. Press once = Build Wall
2. Press twice = Build (Enter/OK)
1. Press once = Build Wall 3. Toggle Selection (Wall angle)
2. Press twice = Undo last command
ecobuild © 2011 Autodesk

26. PKNail Pro
ecobuild © 2011 Autodesk

27. PKNail Pro – TROJB
§ Exterior Shell
§ 1.5 day
§ 80,000 SF
§ < $0.01/SF
ecobuild © 2011 Autodesk

28. PKNail Pro – Autodesk (Waltham)
§ Exterior Shell
§ 4 hours
§ 60,000 SF
§ < $0.01/SF
ecobuild © 2011 Autodesk

29. PKNail Pro – When to Use
§ Interior spaces
§ Exterior
§ Repetitive and no as-builts
§ Budget
§ Accessibility
§ Can Combine with Other Methods
ecobuild © 2011 Autodesk

30. Summary
Disclaimer: The following costs may vary, they are based on a case studies.
ecobuild © 2011 Autodesk

31. Comparison of Capture Techniques
3D LASER AERIAL & 123D CATCH PKNAIL
SCANNING SATELLITE
IMAGES
COST Pay for service Free or minimal Free $3400 Initial+yearly fee
Costs of time Costs of time Payback ~2 projects
Cost of time
TRAINING NONE* 1 week 1-2 weeks 1-2 weeks
ONSITE YES NO YES YES
REDRAWING YES NO YES NO
ADDITONAL Clear view May need Clear view May need
INFO Higher detail level info from FM info from FM
May need full day
of scanning to get
pricing
TIME
(CAPTURE-MODEL) 2-4 days
ecobuild © 2011 Autodesk

32. In Summary…
Aerial & Satellite Affordable, quick and dirty
As 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
ecobuild © 2011 Autodesk

33. Considerations
Cost
Effective
Aerial Images Ideal
§ Size and complexity of the project Photos
2. 1.5
Scenar
Satellite io
Plans and 0
§ Interior/Exterior
9
3.0 Images
4
Scale
Measuring
2. Laser rapid energy
§ Deadlines and time constraints Tape and
5 modeling
8
Measure
3
Wheel 3.0 workflows
§ Budget and available resources Slow 0 1 2 3 4 5 6 7 Rapid
7
2
8 9 10
§ Frequency of existing building work
1
6
§ Multiple uses for model Laser Scan
4.5
10
0
5
Non-ideal
Scenario
Expensive
Make a wish list and prioritize
what you need/want! Image adjusted from Streamlining Energy Analysis of Existing
Buildings with Rapid Energy Modeling.
ecobuild © 2011 Autodesk

34. Analyze
ecobuild © 2011 Autodesk