from ._core import AbstractNormalization, AbstractAnnotationBasedNormalization, AbstractOPEXAnnotationBasedNormalization
from ._core import CHANNEL_RED, CHANNEL_GREEN, CHANNEL_BLUE
from ._fixed import FixedNormalization
from ._none import NoneNormalization
from ._object_annotations import ObjectAnnotationsNormalization
from ._region import RegionNormalization
from ._simple import SimpleNormalization
