Frikha, J., Sellami, D. and Khanfir Kallel, I. (2016) “Indoor/outdoor navigation system based on possibilistic traversable area segmentation for visually impaired people”, ELCVIA Electronic Letters on Computer Vision and Image Analysis. Cerdayola del Vallès, Spain, 15(1), pp. 60–76. doi: 10.5565/rev/elcvia.818.