ex03: crop value to valid values range [0, 255] in USM (unsharp masking)
ex03: correct formula for the gaussian [fix]
ex03: copy&paste error [fix]
ex03: apply circShift correctly [fix]
ex03: adjust threshold & scale
ex03: add gauss integral check (manual)
ex03: add lower/higher then treshold check (manual)
ex03: do not crop value anymore (we do not know the valid ranges :/ ) [fix]
ex03: split our code off from the given one
ex03: create minimal docu