3D Imprinting of Environment for Visually Impaired

The aim of this article is focused on the design of an obstacle detection system for assisting visually impaired people. A simple Time of Flight camera captures real time images present in the environment of the subject. These images are analyzed using OpenCV and MATLAB for depth and position of objects. The disparity map created is segmented into depth categories. A matrix of this data corresponding to the environment is created. According to this matrix, a temporary Three-Dimensional model of the surrounding is generated using actuators and plastic blocks. The subject can then feel this model on a raised surface in order to work the path around the obstacles. Keywords— visually impaired; matrix mapping; 3-d model; interactive feedback; disparity mapping