def central_image_crop(img, crop_width=150, crop_heigth=150):
    """
    Crop the input image centered in width and starting from the bottom
    in height.
    # Arguments:
        crop_width: Width of the crop.
        crop_heigth: Height of the crop.
    # Returns:
        Cropped image.
    """
    half_the_width = int(img.shape[1] / 2)
    img = img[img.shape[0] - crop_heigth: img.shape[0],
              half_the_width - int(crop_width / 2):
              half_the_width + int(crop_width / 2)]
    return img