LogoCleanup

h=height(last)
w=width(last)
Left=600#offset for redenoiseregion
Top=420#offset for redenoiseregion
TL=last.crop(0,0,-(w-Left),(Top-h))
TR=last.crop(Left,0,0,(Top-h))
BL=last.crop(0,Top, -(w-Left),0)
BR=last.crop(Left,Top, 0,0 ).dfttest(sigma=8,threads=2)#redenoiseregion move to any applicable region above
stackvertical(stackhorizontal(TL,TR),stackhorizontal(BL,BR))