This work presents a navigation system for visually impaired using sound navigation and ranging. Here, ultrasonic sensor and Infra Red (IR) proximity sensor have been used for real time obstacle detection. Real time image processing is used to generate idea about the size and distance of the obstacle from the blind person, thus creating safe path for navigation towards destination. Voice recognition is used for controlling the device. A method of finding the device in case it is lost is also provided in the work. The goal is to create a cost effective, light weight, portable system for the blind people enabling their movement without assistance.
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