Zheng Liu M. Genest A. Marincak David S. Forsyth Characterization of surface deformation with the Edge of Light<sup>TM</sup> technique. 35-42 2008 19 Mach. Vis. Appl. 1 http://dx.doi.org/10.1007/s00138-007-0075-1 db/journals/mva/mva19.html#LiuGMF08