TY - GEN A1 - Breuß, Michael A1 - Cristiani, Emiliano A1 - Durou, Jean-Denis A1 - Falcone, Maurizio A1 - Vogel, Oliver T1 - Perspective Shape from Shading: Ambiguity Analysis and Numerical Approximations T2 - SIAM Journal on Imaging Sciences Y1 - 2012 SN - 1936-4954 VL - 5 IS - 1 SP - 311 EP - 342 ER -