Instant Braille Keypad

Electronics and communication

This work aims to assist the visually impaired people for reading a text material and detect objects in their surroundings. The input is taken in the form of an image captured from the web camera. The image is then processed either for the purpose of text reading or for object detection based on user choice. The Raspberry Pi acts as the processing of the entire process. The text reading is supported by software named OCR; other dependencies required for the process include Tesseract Library. The object detection is another aspect of the project which is implemented using a TensorFlow object detection API. It is able to detect various objects in its surrounding and provide text feedback about the same through braille keypad. In this project a raspberry pi board connected to a embedded camera module is used, using which a picture of the page is taken automatically. Braille is a system of reading and writing by touch used by the blind. It consists of arrangements of dots which make up letters of the alphabet, numbers, and punctuation marks. The basic Braille symbol, called the Braille cell, consists of six dots arranged in the formation of a rectangle, three dots high and two across. Other symbols consist of only some of these six dots. The six dots are commonly referred to by number according to their position in the cell. There are no different symbols for capital letters in Braille. Capitalization is accomplished by placing a dot 6 in the cell just before the letter that is capitalized. The first ten letters of the alphabet are used to make numbers. in the cell just before the letter that is capitalized. The first ten letters of the alphabet are used to make numbers.

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