Fig. 3From: Numerical shape-from-shading revisitedVariation of mean angular errors (MAEs) with respect to the initial guess of surface normal using the Lagrangian relaxation of the ORIGINAL setting for blob01 (left) and blob02 (right) scenes. The initial guess of normal vectors are uniformly sampled from the hemisphere in the spherical coordinates (θ,ϕ). The star markers in the figure represent the best initial guessesBack to article page