BRAIN PORT DEVICE
BRAINPORT VISION DEVICE
By
D.KALAIVANI
R.PARVATHI DEVI
ABSTRACT
“BRAINPORT DEVICE”
The device which sends visual input through tongue in much the same way that seeing individuals receive visual input through the eyes is called the “Brainport Vision Device”. BrainPort could provide vision-impaired people with limited forms of sight. To produce tactile vision, BrainPort uses a camera to capture visual data. The optical information -- light that would normally hit the retina -- that the camera picks up is in digital form, and it uses radio signals to send the ones and zeroes to the CPU for encoding. Each set of pixels in the camera 's light sensor corresponds to an electrode in the array. The CPU runs a program that turns the camera 's electrical information into a spatially encoded signal. The encoded signal represents differences in pixel data as differences in pulse characteristics such as frequency, amplitude and duration. Technically, this device is underlying a principle called “electrotactile stimulation for sensory substitution”, an area of study that involves using encoded electric current to represent sensory information and applying that current to the skin, which sends the information to the brain.
1.INTRODUCTION
A blind woman sits in a chair holding a video camera focused on a scientist sitting in front of her. She has a device in her mouth, touching her tongue, and there are wires running from that device to the video camera. The woman has been blind since birth and doesn 't really know what a rubber ball looks like, but the scientist is holding one. And when he suddenly rolls it in her direction, she puts out a hand to stop it. The blind woman saw the ball through her tongue. Well, not exactly through her tongue, but the device in her mouth sent visual input through her tongue in much the same way that
By
D.KALAIVANI
R.PARVATHI DEVI
ABSTRACT
“BRAINPORT DEVICE”
The device which sends visual input through tongue in much the same way that seeing individuals receive visual input through the eyes is called the “Brainport Vision Device”. BrainPort could provide vision-impaired people with limited forms of sight. To produce tactile vision, BrainPort uses a camera to capture visual data. The optical information -- light that would normally hit the retina -- that the camera picks up is in digital form, and it uses radio signals to send the ones and zeroes to the CPU for encoding. Each set of pixels in the camera 's light sensor corresponds to an electrode in the array. The CPU runs a program that turns the camera 's electrical information into a spatially encoded signal. The encoded signal represents differences in pixel data as differences in pulse characteristics such as frequency, amplitude and duration. Technically, this device is underlying a principle called “electrotactile stimulation for sensory substitution”, an area of study that involves using encoded electric current to represent sensory information and applying that current to the skin, which sends the information to the brain.
1.INTRODUCTION
A blind woman sits in a chair holding a video camera focused on a scientist sitting in front of her. She has a device in her mouth, touching her tongue, and there are wires running from that device to the video camera. The woman has been blind since birth and doesn 't really know what a rubber ball looks like, but the scientist is holding one. And when he suddenly rolls it in her direction, she puts out a hand to stop it. The blind woman saw the ball through her tongue. Well, not exactly through her tongue, but the device in her mouth sent visual input through her tongue in much the same way that
References: Bach-y-Rita, Paul et al. "Form perception with a 49-point electrotactile stimulus array on the tongue: A technical note." Journal of Rehabilitation Research and Development. http://howstuffworks.com http://india.cchem.berkeley.edu/~reimer/courses/present/samples/sample2.pdf http://wistechnology.com/printarticle.php?id=2319 http://www.scientificamerican.com/article.cfm?id=device-lets-blind-see-with-tongues http://topnews.net.nz/content/22766-brainport-device-transforms-world-blinds