Audio Visual Reception of American Sign Language for Blind, Deaf and Dumb People

Abstract

The computer recognition of sign language is an important process for enabling communication with the visually and hearing impaired people. This proposed project introduces an efficient way of computer recognition of sign languageby using a simplified method by the use of an accelerometer sensor which is a three axis sensor and a voice IC. The main objective of our project is to convert the sign language into a voice format and display the corresponding message on the LCD screen. The basic idea of this project is to have accelerometer sensors attached to the gloves worn by the impaired person. When the person flexes his/her hand for the pre-coded commands, the accelerometer sensors senses the change due to the angular movement of fingers and produces a corresponding output voltage. The sensed analog signal is converted to digital signal by ADC and transmits it to the voice IC via a microcontroller. The objective of the microcontroller is to perform the matching of the obtained hex-code with its corresponding pre-coded commands using Keil software. Once the code is matched with its pre-coded commands the output is delivered through a speaker via a voice IC and the command is also displayed in a LCD screen.