python对图片分割提取_python将1张图片分割成9张

python将1张图片分割成9张

发布时间：2019-02-21 18:31,

浏览次数：423

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python

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思路

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代码

# -*- coding: utf-8 -*- ''' 将一张图片填充为正方形后切为9张图 Author: ''' 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 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('./img/'+str(index) + '.png', 'PNG') index += 1 if __name__ ==

'__main__': file_path = "1.jpg" image = Image.open(file_path) #image.show()

image = fill_image(image) image_list = cut_image(image) save_images(image_list)

参考：https://zhuanlan.zhihu.com/p/34658133