def crop_image(image, start_x, start_y, width, height):
    """
    Crops an image

    Parameters
    ----------
    image: image
        the image that has to be cropped
    start_x: integer
        x co-ordinate of the starting point for cropping
    start_y: integer
        y co-ordinate of the starting point for cropping
    width: integer
        expected width of the cropped image
    height: integer
        expected height of the cropped image
    
    Returns
    -------
    """

    return image[start_y : start_y + height, start_x : start_x + width]