tactile graphics research
DESCRIPTION
Tactile Graphics Research. Josh Scotland. Terminology. Braille: Language read tactually with characters containing 6 dots Tactile Graphics: Images in a tactile form that are used by low vision students. Accessibility: Amount to which a product is available to the population. Braille Alphabet. - PowerPoint PPT PresentationTRANSCRIPT
Tactile Graphics ResearchJosh Scotland
Terminology
• Braille: Language read tactually with characters containing 6 dots
• Tactile Graphics: Images in a tactile form that are used by low vision students
• Accessibility: Amount to which a product is available to the population
Braille Alphabet
Tactile Graphics
Translation Process
1. Scan the image2. TGA text extraction3. Optical character
recognition4. Braille Translation5. Adobe Illustrator6. Embossing
Tiger Embosser
The TGA
Translation Process
Pros / Cons
• Cons• Lower quality
• Pros• Quick• Customizable• Transportable• Much cheaper!
Summer ‘09 ResearchAudio Augmentation of Tactile
Images for Greater Accessibility
Issue #1
• Braille character sizes• Limitation of information• 12 vs. 29 pt fonts
Size of Braille
Size of Braille
Issue #2• “There are
approximately 57,696 legally blind children in the U.S. Out of those school-age children, only 10 percent use Braille as their primary reading medium.”1
1 American Printing House for the Blind (2008), "Facts and Figures on Americans with Vision Loss", American Foundation for the Blind, http://www.afb.org/Section.asp?SectionID=15&DocumentID=4398, 2009-04-16
Solution: Audio
• Having audio in conjunction with tactile graphics increases accessibility by solving these two issues:– Limitation of information: Less clutter, more info– Braille illiteracy: Accessible to the 90% that can’t
read Braille
Digital Pen Technology
• Use digital pens to play audio with tactile graphics
• Digital paper has thousands of small dots
• Pen has infrared camera that takes snapshots
Goal
Acknowledgments
• Richard Ladner, Mentor, CSE• Dan Comden, Adaptive Technology Lab• Jeffery Bigham, University of Rochester, CSE• Chandrika Jayant, Ph. D., CSE• Sangyun Hahn, Ph. D., CSE• Washington NASA Space Grant• National Federation of the Blind