|dc.description.abstract||Owing to inborn or acquired vision damage the blind cannot accept information as convenient as normal man. It brings obstacles to new knowledge acceptance, communication, walk, and employment, etc for the blind. So, the special education and the blind assistant tool occur.
As a result of the progress of science and technology in the recent years, there are some achievements and developments for the blind assistant tool, but it is not enough for pattern knowing supply. Nowadays, the blind perceive pattern through hot printer, roll printer, and man-made protruding pattern, etc, but there are some drawbacks like non-convenience for these ways.
So, this thesis uses webcam, image processing, and self-design perceiving device to create a blind assistant device for assisting the blind in “seeing” pattern. It uses webcam to grab outside pattern image, and the image will be processed, and then delivers the digital data to the blind perceiving device to show the input pattern for the blind. In practice, we take this device to the blind, and the perceiving result is not bad, and the blind confirm and identify with the idea and contribution of the device.||en_US|