halfQuadraticFilter

haldQuadraticFilter uses the techniques elaborated half-quadratic minmization on manifolds to smooth EBSD data. Properties: alpha: regularisation parameter in [x,y] direction weight: function handle specified by the regularising function \varphi, @(t,eps), where eps is its parameter eps: Parameter for the weight tol: Tolerance for the gradient descent threshold: threshold for subgrain boundaries Methods: smooth: Applies the HQ minimization on the quaternions of the given orientations

For further details of the algorithm see: R. Bergmann, R. H. Chan, R. Hielscher, J. Persch, G. Steidl Restoration of Manifold-Valued Images by Half-Quadratic Minimization. Preprint, ArXiv #1505.07029. (2015)

Written by Johannes Persch, Ronny Bergmann, 09.06.2015 persch@mathematik.uni-kl.de, bergmann@mathematik.uni-kl.de