Feb 02, 2014
A low-cost sonification system to assist the blind
An improved assistive technology system for the blind that uses sonification (visualization using sounds) has been developed by Universidad Carlos III de Madrid (UC3M) researchers, with the goal of replacing costly, bulky current systems.
Called Assistive Technology for Autonomous Displacement (ATAD), the system includes a stereo vision processor measures the difference of images captured by two cameras that are placed slightly apart (for image depth data) and calculates the distance to each point in the scene.
Then it transmits the information to the user by means of a sound code that gives information regarding the position and distance to the different obstacles, using a small audio stereo amplifier and bone-conduction headphones.