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Interface for people with Interface for people with limited visionlimited vision
Yunzhou wuComputer science department of UGA
Three kinds of solutionThree kinds of solution
Magnification solutionsSpeech solutionsBraille solutions
Closed Circuit Television Closed Circuit Television Magnifiers(CCTV)Magnifiers(CCTV)
Standard CCTVs
a camera & monitor screen(B/W or color)
Portable CCTVs
a small “handhold” cameraConnecting a CCTV to computer
share screen with computer
SmartView 5000 SmartView 8000
Portable CCTVs
Training & price Training & price for cctvfor cctv
Easy to useB/w units starts at $1,800Portable starts at about $900Costs about $2,900 for CCTV that scans
material in and then scroll text across the screen automatically
Optical character recognition Optical character recognition (OCR) System(OCR) System
“personal reading machine for totally blind or partially sighted to read “print”
OCR camera scans the materials and reads the printed page out loud using synthetic voice
Can not read any handwrittenIf connected to PC, can convert the
materials to Braille, large print, computer files or other media.
OCR sampleOCR sample
Product of telesensory Inc.
OCR(cont’d)OCR(cont’d)
Training
a few hours for people who never use a computer Price
OCR with build-in voice: starts at $4,000
OCR connected to PC: starts at $1,500
Synthetic Voice “Talking” Synthetic Voice “Talking” computerscomputers
Hardware synthesizing: using hardware to synthesize voice. In DOS env.
Software synthesizing: in Windows95 or higher version.
synthesizer “reads” the screen via its computer-generated voice, it also “navigates” the screen, it announces cursor location and the highlighted item and monitor other computer functions.
users can do ‘word processing ‘ with its help.
Talking computers(cont’d)Talking computers(cont’d)
Training: about 60 hours for users with some understanding
of computers and word processing. Price: screen-reading software: $600-$1,400(Windows) $450-$600 (DOS) hardware synthesizer: $300-$1,200 vary from different quality of speech generated
Braille displayBraille display
Refreshable Braille devices (sometimes called paperless Braille) provide access to PCs via electronic Braille. The Braille display, which changes as the cursor moves from line to line on the computer screen, consists of plastic pins that are electronically raised and lowered to form Braille letters. As many as 80 Braille letters can be displayed at one time.
Training & price Training & price for Braille displayfor Braille display
Requires many hours of training to use, and can only be used by experienced Braille readers
$5,500 for 40-character display$8,000 for 65-character display$12,000 for 80-character display
Braille translation softwareBraille translation software
There is software available that allows a person to translate print to Braille and Braille to print from a standard PC
Available for IBM, Macintosh PCSCompatible with microsoft windows, dos &
WordPerfect
Braille printer(embosser)Braille printer(embosser)
Braille printers connect to PC as the normal printers do
Translate text to Braille before sending it to printer via translation software.
Braille printers can be noisy.
Training & Price Training & Price for braille printerfor braille printer
Require a few hours to learn to use printer & associated translation software.
Price is varied by printing speed , start from $1,800; software starts about $500
A Braille PDAA Braille PDACan work as a note-
takerOnce connecting it to
PC, users can:
download doc from or upload doc to PC
operate PC with the display help
print your doc to printer
keyboard
display
Training & Price Training & Price for Braille PDAfor Braille PDA
Experienced users will take about 20 hours to learn the basic functions, if the keyboard is typewriter like, it will take additional 20 hours to learn to use the keyboard.
Starts from $3,800 ~$5,500.
More infomationMore infomation
http://www.lighthouse.org/resources_adaptive_tech.htm
www.humanware.comwww.aisquared.comwww.arkenstone.orgwww.blazie.com
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