Crop the images to ensure both fit within the bounding box

def crop_to_extents(img1, img2, padding):
    """Crop the images to ensure both fit within the bounding box"""

    beg_coords1, end_coords1 = crop_coords(img1, padding)
    beg_coords2, end_coords2 = crop_coords(img2, padding)

    beg_coords = np.fmin(beg_coords1, beg_coords2)
    end_coords = np.fmax(end_coords1, end_coords2)

    img1 = crop_3dimage(img1, beg_coords, end_coords)
    img2 = crop_3dimage(img2, beg_coords, end_coords)

    return img1, img2