@article{Cristiani:2006mH, author = "Cristiani, Emiliano and Falcone, Maurizio and Seghini, Alessandra", title = "{Numerical Solution of the Perspective Shape-from-Shading Problem}", doi = "10.22323/1.018.0008", journal = "PoS", year = 2006, volume = "CSTNA2005", pages = "008" }