'cmap is a colors.Colormap instance
norm is a colors.Normalize instance to map luminance to 0-1
interp_at_native is a flag that determines whether or not
interpolation should still be applied when the image is
displayed at its native resolution.  A common use case for this
is when displaying an image for annotational purposes; it is
treated similarly to Photoshop (interpolation is only used when
displaying the image at non-native resolutions).
kwargs are an optional list of Artist keyword args'

def __init__(self, bbox, cmap=None, norm=None, interpolation=None, origin=None, filternorm=1, filterrad=4.0, resample=False, interp_at_native=True, **kwargs):

    super(BboxImage, self).__init__(None, cmap=cmap, norm=norm, interpolation=interpolation, origin=origin, filternorm=filternorm, filterrad=filterrad, resample=resample, **kwargs)
    self.bbox = bbox
    self.interp_at_native = interp_at_native
    self._transform = IdentityTransform()
