Ladetto, Q.Merminod, B.2004-12-162004-12-162004-12-162002https://infoscience.epfl.ch/handle/20.500.14299/185262WOS:000178929100028Over the last few years, research had been conducted on how to develop basic mobility aid for visually impaired and blind people using vision and image processing techniques. However, our research at Geodetic Engineering Laboratory has taken a different view to this problem.topotrajtext::conference output::conference proceedings::conference paper