Abstract
Mobility of blind and visually impaired people always suffers from various hindrances while walking indoor and outdoor, due to unaware distributions and properties of obstacles. In our research, we propose to use a 3D TOF camera to detect the surroundings, which not only obtains precise distance and orientation of obstacles, but also analyzes more properties (e.g. size, hanging height) through a 3D segmentation algorithm. Furthermore, a novel touch-sensitive tactile display is employed to present the 3D spatial scene into a 2D perspective. The non-visual representation let visually impaired users sense the distribution of obstacles precisely and explicitly, as well as the surroundings environments. An evaluation plan has been addressed to compare the effectiveness of audio and tactile representation, and investigate the feasibility of extending the while cane.
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