将图像切成九宫格-python

一、代码 

# -*- coding: utf-8 -*-
"""
@Time    : 2018/3/18 19:34
@Author  : LITTLE HORSE
@Software: PyCharm
"""
from PIL import Image
import sys


# 将图片填充为正方形
def fill_image(image):
    width, height = image.size
    # 取长和宽较大值
    new_image_length = width if width > height else height
    # 生成新图片
    new_image = Image.new(image.mode, (new_image_length, new_image_length), color='white')
    #  将之前的图粘贴在新图上，居中
    if width > height:  # 原图宽大于高，则填充图片的竖直维度
        new_image.paste(image, (0, int((new_image_length - height) / 2)))  # (x,y)二元组表示粘贴上图相对下图的起始位置
    else:
        new_image.paste(image, (int((new_image_length - width) / 2), 0))
    return new_image


# 切图
def cut_image(image):
    width, height = image.size
    item_width = int(width / 3)
    box_list = []
    # (left, upper, right, lower)
    for i in range(0, 3):
        for j in range(0, 3):
            box = (j * item_width, i * item_width, (j + 1) * item_width, (i + 1) * item_width)
            box_list.append(box)
    image_list = [image.crop(box) for box in box_list]
    return image_list


# 保存
def save_images(image_list):
    index = 1
    for image in image_list:
        image.show()
        image.save('./'+str(index)+'.png', 'PNG')
        index += 1


if __name__ == '__main__':
    file_path = "timg.jpg"
    image = Image.open(file_path)
    image.show()
    image = fill_image(image)
    #image_list = cut_image(image)
    #save_images(image_list)

二、效果

这是狗哥的头像，拿来一用。