Surface-from-Gradients with Incomplete Data for Single View Modeling. - Heung-Sun Ng; Tai-Pang Wu; Chi-Keung Tang (ICCV, 2007)

Surface-from-Gradients without Discrete Integrability Enforcement: A Gaussian Kernel Approach. - Heung-Sun Ng; Tai-Pang Wu; Chi-Keung Tang (IEEE Trans. Pattern Anal. Mach. Intell., 2010)