def subtract(self, blobA, blobB, scene):
"""
Create a new blob that subtracting the second blob from the first one
"""
(mask, box) = Mask.subtract(blobA.getMask(), blobA.bbox,
blobB.getMask(), blobB.bbox)
if mask.any():
# measure is brutally slower with non int types (factor 4), while byte&bool would be faster by 25%, conversion is fast.
blobA.updateUsingMask(box, mask.astype(int))
return True
return False
def subtract(self, blobA, blobB):
"""
Update the blobA subtracting the blobB from it
"""
(mask, box) = Mask.subtract(blobA.getMask(), blobA.bbox,
blobB.getMask(), blobB.bbox)
if mask.any():
# measure is brutally slower with non int types (factor 4), while byte&bool would be faster by 25%, conversion is fast.
blobA.updateUsingMask(box, mask.astype(int))
return True
return False