NLM Digital Repository The Search for a New Book viewer Washington D.C. Area Fedora User Group May 15, 2018 NLM Digital Repository The Search for a New Book viewer Lindsay Franz Yanru Bi

Current book viewer Latest release/beta: April 6, 2009 HTML4 Product end of life Uses Flash (for image manipulation) Non-responsive Not 508 compliant

Refresh aging Northwestern University page turner implemented in our original 2010 Muradora/Fedora release (used disseminators!) Reduce technical debt / stay ahead of security team Enhance user experience with responsive design and new accessibility features Open source software preference Low implementation level-of-effort Working Group Charge

Features in all 3 applications We compared 3 tools: Internet Archive, Universal Viewer, and Mirador Keyword Searchable (results highlighted on page) Variety of page views (actual size, fit to page, full screen, view cover, single page mode) View book covers Single page mode Supports right-to-left reading order Display/link to external descriptive metadata Next/Previous Page Navigation Responsive design Information conveyed without use of color Correct/consistent reading order of controls and navigation elements Navigate structural contents(table of contents view, structural metadata, logical page numbers) Embeddable in other applications Features in all 3 applications

INTERNET ARCHIVE Scroll pages No Flash component No frames components Highlights keyword search results on page Display OCR/text (alongside page image or separately) INTERNET ARCHIVE

Gracefully handles differing internal page sizes, image orientation, and foldouts Zoom in and out, pan, rotate, select viewing area Go/Jump to page Downloads (PDF of whole book, OCR for whole book, Single page image, All page images) No Flash component Key control navigation Print capabilities Multiple language support for user interface UNIVERSAL VIEWER

MIRADOR Scroll Pages Annotate image block areas Ability to adjust contrast; reverse Image polarity Works well with Universal Viewer (similar technical aspects) MIRADOR

And the winner is…! Universal Viewer #1; Internet Archive #1a Scoring matrix ranked features and implementation criteria for each application Universal Viewer more forward-looking, but more complex to implement, requires more changes to other parts of the architecture Internet Archive had a shorter implementation path / quick fix Interesting to note that several exemplar IIIF implementations provide both Universal Viewer and Mirador When asked why, general response was it was just as easy technically to offer/support both – default is U but let users decide which tool best suits their needs and track analytics over time And the winner is…!

Internet Archive VS Universal Viewer No architecture changes Minor code changes Missing some basic features Search, mobile navigation as plugin Architecture changes Many basic and advanced features IIIF manifest

Current Book Viewer data flow Internet Archive DATA Flow Solr Search Server Lucene Index Search query results Fedora Metadata (MySQL) File locations Fedora File Storage TIFF Master JPG Master DMDINDEX METS PDF JPEG2000 JPG Thumb OCR ALTO RELS-EXT FOXML Book Viewer Fedora Repository DMDINDEX, PDF, OCR JPG Thumbs, RELS-EXT JPEG 2000 Djatoka Image Server Dynamic JPGs Different sizes, tiles

IA CUSTOMIZATIONS Search Download PDF/OCR/Metadata Point search server to our Solr Regenerate JSON on the fly Download PDF/OCR/Metadata Image rotation, full screen mode Upgrade from JQuery 1.10.1 to 3.x 508 compliant IA CUSTOMIZATIONS

Solr Search Results VS IA Search Results

Current Book Viewer data flow Universal Viewer/Mirador data flow Solr Search Server Lucene Index Search query results Fedora Metadata (MySQL) File locations Fedora File Storage TIFF Master JPG Master DMDINDEX METS PDF JPEG2000 JPG Thumb OCR ALTO RELS-EXT FOXML Book Viewer IIIF Server Fedora Repository DMDINDEX, PDF, OCR JPG Thumbs, RELS-EXT IIIF Image API IIIF Search API IIIF Presentation API JPEG 2000 Djatoka Image Server Dynamic JPGs Different sizes, tiles

FUTURE WORK Re-index page and word dimension Reform JSON to support word highlighting Generate IIIF manifest FUTURE WORK