SLIDE 1 SharedCanvas OAC Workshop, March 2011, Chicago
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Primary Requirements
Primary Goal:
- Provide standardized input to presentation systems, to allow
interoperability between manuscript repositories Primary Requirements:
- Ability to model primarily textual items, where the individual
physical instance is an important cultural object
- Alignment of Images, Texts and Commentary per page
- Services and Content distributed between institutions, not in a
single silo
SLIDE 2 SharedCanvas OAC Workshop, March 2011, Chicago
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Unique Requirements
Working at the physical instance level provides unique requirements:
- Only parts of pages may be digitized
- Fragments of pages, only illuminations digitized, …
- Or page may not be digitized at all
- Would damage the page, already destroyed, hypothetical
- Non-rectangular Pages: heart shaped manuscript
- Aligning multiple Images that depict the same page
- Spectral Imaging, Microfilm vs Photograph, Resolutions…
- Order of Pages may be different over time due to rebinding
- Pages may be physically held by different institutions
SLIDE 3
SharedCanvas OAC Workshop, March 2011, Chicago
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Naïve Approach: Transcribe Images Directly
But how to align multiple images, pages without images, fragments ???
SLIDE 4 SharedCanvas OAC Workshop, March 2011, Chicago
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Looking Around: Canvas Paradigm
- A generic Canvas is an abstract space to build up a display
- HTML5
- SVG
- PDF
- Our Canvas starts with no content, but has rectangular dimensions
- Top left/bottom right corner of canvas is equivalent corner of page
- Images and Text painted on to Canvas by distributed Annotation
- The Image/Text/Commentary is the Annotation's Body
- The Canvas is the Annotation's Target
- Both Body and Target support Segment descriptions:
- Fragments
- Extract page/line text from full transcription
SLIDE 5
SharedCanvas OAC Workshop, March 2011, Chicago
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SharedCanvas: Annotations to Paint Canvas
SLIDE 6
SharedCanvas OAC Workshop, March 2011, Chicago
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Transcription via Canvas: M804
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SharedCanvas OAC Workshop, March 2011, Chicago
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Fragments: Cod Sang 1394
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SharedCanvas OAC Workshop, March 2011, Chicago
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Missing Pages: Parker CCC 286
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SharedCanvas OAC Workshop, March 2011, Chicago
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Order: Sequence and Range
SLIDE 10
SharedCanvas OAC Workshop, March 2011, Chicago
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Rebinding: BNF f.fr. 113-116
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SharedCanvas OAC Workshop, March 2011, Chicago
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SharedCanvas: Data Model
SLIDE 12 SharedCanvas OAC Workshop, March 2011, Chicago
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Summary
- SharedCanvas uses OAC to model medieval manuscript layouts
- Uses Canvas Paradigm with Annotations to paint content
- Part of larger DMSTech Initiative
- It can be used within a repository, or in a distributed collaboration
- Enables and encourages participation
- Ease of re-use
