Computer vision based unistroke keyboard system and mouse for the handicapped

Date
2003-07
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Source Title
Proceedings - IEEE International Conference on Multimedia and Expo, 2003
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Publisher
IEEE
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Pages
II-765 - II-768
Language
English
Type
Conference Paper
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Abstract

In this paper, a unistroke keyboard based on computer vision is described for the handicapped. The keyboard can be made of paper or fabric containing an image of a keyboard, which has an upside down U-shape. It can even be displayed on a computer screen. Each character is represented by a non-overlapping rectangular region on the keyboard image and the user enters a character by illuminating a character region with a laser pointer. The keyboard image is monitored by a camera and illuminated key locations are recognized. During the text entry process the user neither have to turn the laser light off nor raise the laser light from the keyboard. A disabled person who has difficulty using his/her hands may attach the laser pointer to an eyeglass and easily enter text by moving his/her head to point the laser beam on a character location. In addition, a mouse-like device can be developed based on the same principle. The user can move the cursor by moving the laser light on the computer screen which is monitored by a camera. © 2003 IEEE.

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Keywords
Cameras, Disabled persons, Laser applications, Laser beams, Mammals, Character locations, Computer screens, Key location, Laser lights, Laser pointer, Rectangular regions, Text entry, Computer vision
Citation
Published Version (Please cite this version)