TY - CONF T1 - Computer Vision-Based Terrain Sensors for Blind Wheelchair Users T2 - Proceedings of the International Conference on Computers Helping People (ICCHP) Y1 - 2006 A1 - Coughlan, J. A1 - Roberto Manduchi A1 - Shen, H. JF - Proceedings of the International Conference on Computers Helping People (ICCHP) UR - http://users.soe.ucsc.edu/~manduchi/papers/wheelchairICCHP2006.pdf ER -