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By: Arthur S' Agdeppa Jr

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Paul Bach-y-Rita and Kurt A. Kaczmarek invented the Tactile Vision Substitution System ... Paul Bach-y-Rita and Kurt A. Kaczmarek invented TVSS since 1972. The ... – PowerPoint PPT presentation

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Title: By: Arthur S' Agdeppa Jr


1
By Arthur S. Agdeppa Jr
2
We see with the brain, not the
eyes(Bach-y-Rita, 1972)
  • There are 45 million blind people worldwide and
    growing.
  • The cure for blindness still doesnt exist
  • Paul Bach-y-Rita and Kurt A. Kaczmarek invented
    the Tactile Vision Substitution System

3
What is the Tactile Vision Substitution System
(TVSS)?
  • A Sensory Substitution System.
  • Sends signal to one sense that is normally
    received by another

4
Components of the TVSS?
  • CMOS active-pixel as the input device
  • Control box / circuit contains the receiver,
    multiplexer, clock, and switch.
  • Output device is an array of microelectrodes on
    flexible PCB


5
Output Resolution
  • Capable of performing complex perception
  • facial recognition
  • accurate judgment of speed and direction of a
    moving object.

6
Objectives of Research
  • To explore the potential of a TVSS
  • By building and testing a prototype of the device
    using high-speed CMOS
  • Collision avoidance for blind people
  • By constantly sampling images at high rate (60
    fps) and providing instant feedback
  • To provide real-time image sampling
  • By reducing time lag between input and output
    device

7
The Prototype Hardware
  • Input Device (COH-7200)
  • CMOS sensor
  • ½ monochrome
  • 659 x 494
  • 50 fps
  • D-cam compliant 8-bit output
  • IEEE-1394A output interface

8
Prototype Hardware Continuation
  • Logic (Control Circuit)
  • Laptop Computer
  • Linux Operating System (Open Source)
  • Generic software
  • C language
  • Output Device
  • Light Emitting Diode Matrix
  • Prevent Injuries
  • Digital input
  • Consists of 8 x 8 LED
  • Serial Peripheral Interface

9
Linux IEEE1394
10
Output Pinout
  • Pin 1 5 V power source
  • Pin 2 Data I/O
  • Pin 3 Chip Enable
  • Pin 4 Clock
  • Pin 5 0 V power source

11
Challenges
  • Edge Detection Algorithm
  • Canny edge detection algorithm
  • Formula to scale down image
  • From 659 x 494 (input device) to 8 x 8 (output
    device)
  • Time

12
Summary
  • Paul Bach-y-Rita and Kurt A. Kaczmarek invented
    TVSS since 1972
  • The prototype will have
  • COHU-7200
  • Linux box
  • LED array
  • The prototype will be used to explore the
    potential of TVSS device

13
My Future Agenda
  • Pursue Electronics and Computer Engineering
    Technology (ECET) in Maui Community College (MCC)
  • Be a part of Oceanit Ohana

14
Acknowledgements
  • Oceanit
  • Curt Leonard
  • Leslie Bailey
  • Staff
  • CfAO
  • Malika Bell
  • Lisa Hunter
  • Hilary OBryan
  • MEDB
  • Isla Yap
  • MCC
  • Mark Hoffman
  • Wallette Pellegrino

15
References
  • www.who.int (World Health Organization)
  • www.wicab.com (Official Website of Brainport)
  • www.linux.org (Official Website of Linux)
  • http//www.tldp.org/HOWTO/libdc1394-HOWTO/concepts
    .html (libdc1394)

16
Questions ?
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