Post on 15-Jul-2015
3D technologies for teaching and learning
How using 3D technologies can benefit education and research
Image by UCL. Used with permission
An Introduction to 3D Digitisation
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Who is this 3D for?
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schools colleges universities
museums archives archaeology
engineering humanities
design arts computer sciences
Image by Andre Hilton. CC BY-SA 3.0
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Why use digital 3D?
» We can widen our audience by‘dematerialising’our real-world collection
» We can preserve fragile collections by making 3D copies
» We can harvest data from real world objects to increase our understanding
» Researchers can gain new knowledge by 3D modeling & simulation
» We can share 3D data of real world objects
» 3D printing can make surrogate objects available to all
» 3D printing creates infinite opportunities for prototyping
» Learners engage with immersive worlds and‘gamification’
Why?
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Dematerialising material
» A digital 3D model is essentially a set of instructions
» The digital 3D model is a virtual object
» 3D digital models can also be ‘printed out’ as real, tangible objects
» Part of the 'open' movement
» Falling costs and simplified workflows means using 3D content is now a realistic option Image by Andre Hilton. CC BY-SA 3.0
» Museum collections are protected from excessive handling
» Data can be used for analysis and sharing
» Surrogate objects can be generated
» Web delivery of collections generates greater footfall
Preserving collections
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Image by UCL. Used with permission
» 3D data provides greater insights and understanding
» Data can be made available to all
» Value added research
» Data can be used across disciplines
Harvesting data
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Image by CyArk. CC BY-SA 3.0
» 3D data provides insights into real world objects that are otherwise not attainable
» Increased knowledge can be used for conservation and preservation
» Dissemination of knowledge fulfils research remit
Gaining knowledge
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Image by Justin Barton. CC BY-SA 3.0
» 3D data can be archived and accessed at any time
» 3D data can be delivered via many means including web
» 3D data can be shared openly between institutions around the world
» Research can be collaborative
» 3D data can be accessed globally for 3D printing
Sharing 3D data
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Image by Eggalois. CC BY-SA 3.0
» 3D printing is a proactive, immersive learning activity
» Learners achieve immediate, tangible results
» Imagination is not limited by material
» Applicable learning to a wide variety of subjects and disciplines
3D printing for all
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Photo by nyxchaotica. CC BY-SA 3.0
» Democratisation of manufacture
» Infinite flexibility without cost
» Intricate shaping without waste
» Imagination without limits
3D prototyping
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Photo by Shapeways. CC BY-SA 3.0
» 3D augments gamification
» Learning can be gamified
» 3D creates immersive interaction
» 3D interaction develops cognitive skills
» 3D gamification increases engagement
» 3D gamification takes learning out of the classroom
3D VR AR
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Photo by Hagustin. CC BY-SA 3.0
» Dimension judged by eye or measured by hand
» Can be accurate and simple
» Or detailed and less accurate
» Any 3D modelling software can be used
» No point cloud > polygon transformations involved
Approximation
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Image by David Van Brink. CC BY-SA 3.0
» Laser focused on object
» Time of bound-back to scanner used to judge distance of a single point
» Built-in camera may also collect colour information for each point
» Point cloud is built then transformed into polygon
» Reflective objects are problematic
Laser scanning
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Image by CyArk. CC BY-SA 3.0
» Regular pattern of light projected onto object
» Object digitally photographed
» Computer calculates degree and nature of pattern distortion
» Computer calculates 3D shape of object
» Point cloud is built then transformed into polygon for viewing, sharing and using
» 2D images can be taken to create colour ‘texture maps’
Structured light
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Image by David Van Brink. CC BY-SA 3.0
» Using maths to ‘pull’ 3D geometry from 2D images
» Any camera can be used but ‘neutral’ lenses work best
» Done manually in WWI but now computerised
» Point cloud is built then transformed into polygon for viewing, sharing and using
» 2D images can be used to create colour ‘texture map’
Photogrammetry
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Image by Michael Ashley. CC BY-SA 3.0
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