def __call__(self,speckle_size=3,filter=0):
from gamera.core import Point, Image
image=self.image_copy()
if speckle_size > 0:
image.despeckle(speckle_size)
if filter == 0:
filtered = image.rank(5)
elif filter == 1:
origin = Point(1,1)
se = Image(Point(0,0),Point(2,2),ONEBIT)
se.fill(1)
filtered = image.binary_dilation(se,origin)
filtered = filtered.binary_erosion(se,origin)
else:
image.invert()
image.despeckle(5)
image.invert()
filtered = image
return filtered
