@conference {Manduchi08, title = {Search Strategies of Visually Impaired Persons using a Camera Phone Wayfinding System}, booktitle = {11th International Conference on Computers Helping People with Special Needs (ICCHP {\textquoteright}08)}, year = {2008}, address = {Linz, Austria}, keywords = {Blind wayfinding}, url = {http://users.soe.ucsc.edu/~manduchi/papers/ColorMarkerFinal.pdf}, author = {Roberto Manduchi and Coughlan, J. and Ivanchenko, V.} }