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  1. Book Reading Interface: Image Processing IssuesJ.Chetan, V.Sreekanth, Rakesh Babu Vamshi Ambati and C.V.JawaharInternational Institute of Information Technology Hyderabad, India IIIT Hyderabad - http://dli.iiit.ac.in/

  2. Requirements • Usability • Navigate through pages • Easy and simple to use • Pleasant to read images • Accessibility • Serving low band-width users • Resource aware IIIT Hyderabad - http://dli.iiit.ac.in/

  3. Images in Universal Digital Library IIIT Hyderabad - http://dli.iiit.ac.in/

  4. Image format in ULIB • PROS • Archival quality images • Good to reproduce in print • CONS • Huge size demands greater bandwidth • Requires third party apps to display online • But…. • TIFF is not the only format to display images • User does not need high resolution images all the time • User may not need to see original scanned sizes of the images all the time (Good enough vs Perfect images) IIIT Hyderabad - http://dli.iiit.ac.in/

  5. PNG v.s TIFF IIIT Hyderabad - http://dli.iiit.ac.in/

  6. What are the possibilities? • Store various formats of images at various resolutions (pre-compute) • All possible resolutions/sizes may be difficult to calculate ahead of time • Requires more space • Perform on the fly conversion to other formats and resolutions • We follow this approach IIIT Hyderabad - http://dli.iiit.ac.in/

  7. Book reading interface • Image server • TIFF Plug-in • Book Reading Interface • Real experience of reading book • Display thumbnail display for quick browsing • Printing and viewing the high resolution TIFF images IIIT Hyderabad - http://dli.iiit.ac.in/

  8. Statistics from Open source Image Processing Libraries IIIT Hyderabad - http://dli.iiit.ac.in/

  9. Image Server • On fly conversion of formats (PNG, JPEG, etc…) • Thumbnails • Resizing • Smoothing • Configurable • Advantages: • Takes care of Low band width people • Other Applications (WAP) • Open Source IIIT Hyderabad - http://dli.iiit.ac.in/

  10. Smoothing IIIT Hyderabad - http://dli.iiit.ac.in/

  11. Anti-aliasing (future work) IIIT Hyderabad - http://dli.iiit.ac.in/

  12. Architecture IIIT Hyderabad - http://dli.iiit.ac.in/

  13. Statistics IIIT Hyderabad - http://dli.iiit.ac.in/

  14. Screen shot of book reader IIIT Hyderabad - http://dli.iiit.ac.in/

  15. Screen shot of plug-in IIIT Hyderabad - http://dli.iiit.ac.in/

  16. Thank you http://dli.iiit.ac.in/ IIIT Hyderabad - http://dli.iiit.ac.in/