Notes. 11.04.2003

The software produces a multi-scale surfaces in the form of Hierarchical Radial Basis Functions (see References of our group). It provides also a converter to mesh by 2D Delauney triangulation, with the additional possibility of choosing the convex hull of the data points.

File->Open input points. You open a .pnt file which contains the points (example files are ciccio.pnt and Stefano.pnt).

Hrbf->Settings HRBF. 
	# of layers:(number of RBF layers). 
	Receptive field (coefficients <2> number of adjacent Receptive Fields inside which the points used to compute the coefficients are considered).
	Receptive field (output <4> number of adjacent Receptive Fields inside which the output of a Gaussian is considered not zero).
	Resampling step <1> step used for resampling (in millimiters).
	Maximum error <0.8> maximum squared error.
	Use higher sigma: insert sigma of the first layer <12mm>; the sigma of the higher layers are obtained by halfing the sigma at each layer. This value set the density of the grid (Dx almost equal to 0.75 sigma). Therefore, if you have a very large input domain, if you choose a small sigma, you end up with a lot of Gaussians. sigma = 12mm is good for reconstructing a face, may be not useful for other models.
