看到一个好玩的方式,学习一下

思路

读取图片->填充图片为正方形(fill_image函数)->将图片切分为9张(cut_image函数)->保存图片(save_image)->over

代码

from PIL import Image
import sys


# 将图片填充为正方形
def fill_image(image):
width, height = image.size
# 选取长和宽中较大值作为新图片的宽
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')
# 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
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


# 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): # 两重循环,生成9张图片基于原图的位置
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(str(index) + '.jpg')
index += 1


if __name__ == '__main__':
image_path = "img/mcat_jpg.jpg"
img = Image.open(image_path)
# image.show()
image = fill_image(img)
image_list = cut_image(image)
# save_images(image_list)