SCRIBE: A Web-based Alternate Format System
Transcript of SCRIBE: A Web-based Alternate Format System
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SCRIBE: A Web-based Platform for Alternate Format Creation
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Slice & Scan OCR
Reassemble Upload
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What we produce…
• Approximately 130 jobs for Fall 2010 (10-week quarter system)
• Conversion jobs included textbooks, course readers, lecture materials, & PowerPoint slides
• Converted materials consisted of literary and math Braille, tactile graphics, MS Word documents, and accessible PDFs
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2009 - 2011 Student Preferences & AT
• Preference to have assistive technology installed on personal computer
• Students were requesting different formats of the same materials for studying
• Preference for mobile device support when using different formats for studying
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An online conversion system to promote student independence
and deliver documents in an accurate, timely, and
student-preferred format.
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RoboBraille service • User responses since August 2004: 2m+ requests;
many thousand requests per month
• Our users
– Educators
– Braille readers, esp. advanced
– Partially sighted
– Dyslexic, people with poor reading skills
– Language learners
• The result of a need for critical mass
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What is RoboBraille Text-to-Speech
OCR
Text-to-Braille
mp3 encoder
Daisy Pipeline Office automation
Mail/web delivery
Mobile
English Danish
Portuguese French
Greek
Italian Lithuanian Polish
German
Spanish Russian
Bulgarian
Hungarian Norwegian
Arabic
Icelandic
Romanian Swedish Dutch Inuit
Slovenian
Folder Web .doc, .docx .htm, .html .xml .txt. .asc .rtf .pdf (all types) .mobi, epub .tif, gif, .bmp .jpg, .j2k, .jp2, .jpx .pcx, .dcx .djv .ppt .odt
ebook converter
Tagged pdf
Math Daisy
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What we wanted...
• Web-based Interface
• High quality, customizable voices
• MP3 Audio
• Braille
• ePub/Mobi
• Text/RTF
• Accessible PDF
• DAISY
• MS Word/Excel
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What we developed…
• SCRIBE – the Stanford Converter Into Braille and E-Text
• Customized system based on Robobraille Agents, with focus on needs of post-secondary institution
• Students request alternate format conversions from OAE or can use the SCRIBE platform
• Available to all members of the Stanford community, not just students
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SCRIBE Conversion Process
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File Delivery
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ePub Document
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File Delivery
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PEF Document
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Original File Format
Available Output Formats
Audio (MP3)
Braille PEF DAISY Word RTF Text ePub MOBI Tagged
.doc, .docx Yes Yes Yes Yes No No Yes Yes Yes Beta
.rtf Yes Yes Yes Yes No No Yes Yes Yes No
.txt Yes Yes Yes Yes No No Yes Yes Yes No
.htm, .html Yes Yes
ASCII Yes No No No Yes Yes Yes Yes
ePub No No No No No No No NA Yes No
MOBI No No No No No No No Yes NA No
.pdf Yes Yes Yes No Yes Yes Yes Yes Yes Yes
.tiff, .jpeg,
.gif, .bmp, .djv, .j2k
Yes Yes Yes No Yes Yes Yes Yes Yes Yes
Conversion Table at: http://scribe.stanford.edu/conversion.html
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Usage from 12/2011 to 10/2012
Conversion 67%
NeoJulie 10%
NeoPaul 18%
NeoKate 0%
ePub 3%
Mobi 1%
Braille 1%
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Technology Architecture
Web & Mail Server
• Dell R210 1U Server
• IIS 7, ASP.NET 4.x
• hMailServer
– Multiple, local POP3 e-mail accounts
• Web page to download large file sizes
Conversion Server
• Dell R510 2U Server
• VMWare ESXi
– VMs are Windows 7, 32-bit
• Robobraille Agents
– Braille, DAISY, MP3
– Neospeech SAPI5 Voices
• OCR Agent
– Abbyy Finereader 11 Corporate Edition
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What about image-files, such as those that have been scanned?
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Scanned Book Image
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I uploaded a PDF document and the MP3 doesn’t sound right –
how do I fix this?
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The words are correct, but the voices don’t pronounce the words
correctly - now what?
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Lessons Learned…
• Word documents may require quick clean-up for optional hyphens
• Provide a “Best Practices” resource to guide users on proper document formatting
• Abbyy Finereader is not foolproof…but has the necessary Hot Folder capability
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Lessons Learned…
• Watch out for the size of file uploads and limits in both IIS & mail server settings
• Separating the Robobraille Agents and OCR Agent into different resource pools improved stability in the VM platform
• Hyper-V virtualization does not support sound card emulation for TTS creation; use VMware
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Pending Developments…
• MS Word to Tagged PDF
• “Cleaning” of MS Word documents upon conversion from image files
• MS PowerPoint to Alternate Versions
• DAISY + MathML Conversion
• Support for ePub 3 documents
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Potential Benefits…
• Student Independence
• Decreased time required for staff to convert simple document formats
• Simplify assistive technology & TTS licensing
• Provide a conversion tool that will support the creation of accessible formats for content authors throughout the institution
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Thank you
Sean Keegan Office of Accessible Education Stanford University http://scribe.stanford.edu [email protected]