MSc Geospatial and Mapping Sciences final project:
MSc project proposal presentation slides.
Produced in fulfilment of MSc Geospatial & Mapping Sciences at the University of Glasgow (2015).
2. PRESENTATION OUTLINE
Peter McCready !
0806514
1. Project Overview
2. Deliverables
3. Study Area
4. Doocot - Interior and Exterior
5. Project Resources
6. Terrestrial Laser Scan
7. Photogrammetry
8. Comparison of Methodologies
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3. PROJECT OVERVIEW
Peter McCready !
0806514
Provisional Project Title:
Digital building conservation: a comparative study of Terrestrial Laser Scanning and
Photogrammetry. A case study of the Dougalston Estate Doocot in Milngavie, Glasgow.
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• Interior and exterior Terrestrial Laser Scan (TLS) of the Doocot
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• Photogrammetry of a section of the Doocot
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• Generate 3D models from TLS and Photogrammetry data
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• Comparison of the two different methodologies
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• Submission of a 3D model to the Royal Commission on the Ancient and
Historical Monuments of Scotland (RCAHMS) and provide model to local
heritage and history groups
Intentions:
4. 1. Interior and exterior 3D model of the Doocot from TLS
(That will be submitted to RCAHMS)
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2. 3D model of a section of the Doocot from Photogrammetry
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3. Comparison of the two different methods and a recommendation
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4. Lessons learned and recommendations for a future project
Peter McCready !
0806514
DELIVERABLES
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8. 1. Control network setup!
- Static GNSS
- Check with RTK GNSS
2. HDS 6” target scanning (BS & FS)!
! - ! Adopting the Traverse Method!
3. Point cloud acquisition (Doocot Laser Scanning)!
4. Image acquisition (TLS Photography)!
5. Traverse to next station until complete!
6. Data cleaning & modelling
Peter McCready !
0806514
TLS PROCESS
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Image Source: http://eca.state.gov/
9. Peter McCready !
0806514
TLS TRAVERSE
• 6-10 Exterior Scans (Currently Undecided)
• 1-3 Interior Scans (Currently Undecided)
• Station C used as Reference Point for Interior Traverse
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C
H
G
I
INTERIOR!
TRAVERSEEXTERIOR TRAVERSE
10. 1. Image capture!
2. Inspect image-set!
3. Photography processing - Structure From Motion (SFM)!
- Image alignment, camera calibration & camera positioning
- Feature point detection
- Feature monitoring
4. 3D point cloud generation!
5. Building Mesh (Geometry)!
6. Texturing
Peter McCready !
0806514
PHOTOGRAMMETRY PROCESS
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Image Source: http://michot.julien.free.fr/
11. 1. Methodology (equipment requirement, expense etc.)
2. Point Cloud Accuracy
3. Data Capture Time
4. Data Processing Time
Peter McCready !
0806514
TLS vs PHOTOGRAMMETRY
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• Will add to the comparison criteria after further reading
Comparison Criteria:
12. Please Contact:!
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Peter McCready - MSc Candidate
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0806514m@student.gla.ac.uk
FURTHER INFORMATION
Peter McCready !
0806514
References:!
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GREAT BRITAIN. Peter McGowan Associates (2006) Survey of Historic Gardens and Designed Landscapes in East
Dunbartonshire, East Dunbartonshire: East Dunbartonshire Council
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UNITED STATES OF AMERICA. CALIFORNIA DEPARTMENT OF TRANSPORTATION. (2011) Caltrans Surveys Manual.
State of California: Office of Land Surveys
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Verhoeven, G. (2011) Taking Computer Vision Aloft - Archaeological Three-Dimensional Reconstructions from Aerial
Photographs with PhotoScan, Wiley Online Library [Online] Archaeological Prospection 18 (1) p.67-73. Available from:
http://onlinelibrary.wiley.com/doi/10.1002/arp.399/full [Accessed: 7th May 2015]
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THANK YOU!
ANY QUESTIONS?