clitk::AndNot<ImageType>(image_1NotIn2, input2, GetBackgroundValue());
ImagePointer image_2NotIn1 = clitk::Clone<ImageType>(input2);
clitk::AndNot<ImageType>(image_1NotIn2, input2, GetBackgroundValue());
ImagePointer image_2NotIn1 = clitk::Clone<ImageType>(input2);