'Set the list of regions. The regions are square coordinates on a unit
sized image followed by the sign of a region.
The format is [[[TL],[BR],SIGN],[[TL],[BR],SIGN].....]
Where TR and BL are the unit coorinates for the top right and bottom
left coodinates.
For example
[[[0,0],[0.5,0.5],1],[[0.5.0],[1.0,1.0],-1]]
Takes the right side of the image and subtracts from the left hand side
of the image.'

def setRegions(self, regions):

    self.mRegions = regions
