%dip_pgst3dsurface  Parametric Gradient Structure Tensor
%    out = dip_pgst3dsurface(mask, para1, para2, g, st)
%
%   mask
%      Binary mask image.
%   para1
%      Image Array containing the first eigenvector in polar coordinates.
%   para2
%      Image Array containing the second eigenvector in polar coordinates.
%   g 
%      Image Array containing the gradient.
%   st 
%     Float Array containing the tensor smoothing.
%
%  Up to now only sfloat as input type.   

% (C) Copyright 1999-2004               Pattern Recognition Group
%     All rights reserved               Faculty of Applied Physics
%                                       Delft University of Technology
%                                       Lorentzweg 1
%                                       2628 CJ Delft
%                                       The Netherlands
%
% Bernd Rieger, 2003.

