We developed a tactile vision substitution system, which is composed of an electro-tactile display, optical sensors beneath each electrode, and a smartphone with a camera and an LCD. The smartphone acquires the surrounding view, conducts image processing and displays the image on the LCD. The image is captured by the optical sensors and converted to a tactile image by the electro-tactile display. Combining the commonly available mobile device and electro-tactile display enables a low cost yet powerful and compact system.
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