only make neighbourhood for every pixel instead of for every sample
small correction of index
rewrote as test for smoothed normals
Merge branch 'alternativeSmoothing', since it has same result but faster
fixed bug with clamping 8 times
added matlab workspace, so smoothing step is not necessary
only apply algorithm to small window
moved debug window to more interesting part of image
setting debug window now around certain pixel

Also small adaption for testing feature filtering only
Merge branch 'debugWindow' into NonPerChanel

Conflicts:
	rpf_algorithm.m
normalizing first reflection direction
not making samples unique anymore, checking if sample is inside box
some renaming/debug comments