def METHOD_NAME(self) -> None:
    """
    # Got this one from somewhere on the net.  Not a clue how the 'convolve2d' works!
    from numpy import array
    from scipy.signal import convolve2d
    im = self.image.resize((self.width, self.height), Image.ANTIALIAS).convert('L')
    in_data = array((im.getdata())).reshape(self.width, self.height)
    filt = array([[0,1,0],[1,-4,1],[0,1,0]])
    filt_data = convolve2d(in_data,filt,mode='same',boundary='symm').flatten()
    result = reduce(lambda x, (y, z): x | (z << y),
                     enumerate(map(lambda i: 0 if i < 0 else 1, filt_data)),
                     0)
    return result
    """