heritage together - a web community for digitising cultural heritage assets: andrew wilson, bangor...
TRANSCRIPT
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A Web Community for Digitising Cultural Heritage Assets
Andrew WilsonBangor University
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Outline
• Context of the project− Overview
− What kind of heritage?
• Challenges facing archaeologists
• HeritageTogether− Photogrammetry
− Crowdsourcing
− HeritageTogether pipeline
• Engaging the public
• Engaging the academics
• Future work
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Overview3
“HeritageTogether is a project that aims to create 3D models of megalithic monuments (such as standing stones
and burial chambers) in Wales, UK, from crowd-sourced images. Members of the public upload their photographs
of the sites to the project website. Models are created using an open source Structure-from-Motion (SfM) work
flow”
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Overview4
What kind of heritage?
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Standing Stones5
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Cairns6
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Dolmens7
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Passage Graves8
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Challenges facing Archaeologists9
• Sites under threat from– Weather– Changes in climate– Urban development
• Time to survey sites
– Takes many hours for each site
• Number of sites to survey
– Over 2,500 sites identified in Wales
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Recording Sites
• Traditional Recording
– Hand-drawn plans
– Measurements
• A Digital Record
– Photographs
– Total Station
– GPS
– Photogrammetry
– Laser scanning
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Photogrammmetry11
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Photogrammmetry12
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Crowdsourceing
Can the general public help?
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Crowdsourced 3D Modelling
They upload their photographs of a site,
we process the model and make it available on the website
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Crowdsourced 3D Modelling15
+ more…
1. A series of photographs
2. Sparse point cloud
Keypoints identified using SIFT
Camera position and pose estimated using a
sparse bundle adjustment system
CMVS breaks data into clusters
3. Dense point cloud
PMVS2 uses camera positions to
approximate 3D structure
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Crowdsourced 3D Modelling16
3. Dense point cloud
4. Mesh
5. Textured Model
Poisson Surface Reconstruction
Texture created from blend of original images
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Getting the Models Online17
5. Textured Model
Quadric Edge Collapse Decimation
Export X3D
X3DOM on webpage
6. Models in Browser
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Engaging the Academics20
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Engaging the Academics
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Engaging the Public22
Exhibitions
Tangible Models
Open Days
Demonstrations
Workshops
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Future Work
• Methods of improving the processing
• Analysis of the models
– Classification based on shape
– Extraction of data from models
• Tools for archaeologists
– Analysis of rock art and site information
– Compare sites
• Tools for the public
– Analyse maps and site information 23
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A Web Community for Digitising Cultural Heritage Assets
Thank you!