#参考链接：https://blog.csdn.net/jiachen0212/article/details/79598676 留着自己学习
# -*- coding: utf-8 -*-
'''''
将一张图片填充为正方形后切为9张图
Author:微信公众号：大数据前沿
'''
from PIL import Image
import sys
#先将 input image 填充为正方形
def fill_image(image):
width, height = image.size
#选取长和宽中较大值作为新图片的
new_image_length = width if width > height else height
#生成新图片[白底]
new_image = Image.new(image.mode, (new_image_length, new_image_length), color='white') #注意这个函数！
#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 #(x,y)二元组表示粘贴上图相对下图的起始位置,是个坐标点。
new_image.paste(image, (0, int((new_image_length - height) / 2)))
else:
new_image.paste(image, (int((new_image_length - width) / 2),0))
return new_image
def cut_image(image):
width, height = image.size
item_width = int(width / 3) #因为朋友圈一行放3张图。
box_list = []
# (left, upper, right, lower)
for i in range(0,3):
for j in range(0,3):
#print((i*item_width,j*item_width,(i+1)*item_width,(j+1)*item_width))
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.save('./result/python'+str(index) + '.png', 'PNG')
index += 1
if __name__ == '__main__':
file_path = "4.jpg"
image = Image.open(file_path)
#image.show()
image = fill_image(image)
image_list = cut_image(image)
save_images(image_list)
