imageutil.py 文件源码

def change_sharpness(image, sharpness=1.0):
    """
    Change sharpness of image.

    >>> image = np.eye(3, dtype='uint8') * 255
    >>> change_sharpness(image, 0.5)
    array([[255,   0,   0],
           [  0, 196,   0],
           [  0,   0, 255]], dtype=uint8)

    See
    http://pillow.readthedocs.io/en/3.1.x/reference/ImageEnhance.html#PIL.ImageEnhance.Sharpness

    :param numpy array image: Numpy array with range [0,255] and dtype 'uint8'.
    :param float sharpness: Sharpness [0, ...]
    :return: Image with changed sharpness
    :rtype: numpy array with range [0,255] and dtype 'uint8'
    """
    return enhance(image, ie.Sharpness, sharpness)