python如何制作缩略图_Python

本文实例为大家分享了python制作缩略图的具体代码，供大家参考，具体内容如下

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									import cv2 #导入opencv模块

									from tkinter import * #导入tkinter模块

									from tkinter import ttk #tkinter最新的主题部件

									from pil import image

									#初始化模块

									root = tk()

									root.title('pt')

									root.geometry('600x300')

									#查找图片路径，成功则显示图片

									def searchpicture():

									 location = locofpicture.get()

									 img = cv2.imread(location)

									 cv2.imshow("image",img)

									#生成缩略图

									def setpicture():

									 # 获取图片路径

									 location = locofpicture.get()

									 # 对图片进行操作

									 im = image.open(location)

									 im.thumbnail((int(heightofpicture.get()),int(widthofpicture.get())))

									 im.save(nameofimg.get(),'jpeg')

									label1 = ttk.label(root,text='选择图片')

									label2 = ttk.label(root,text='长:')

									label3 = ttk.label(root,text='宽:')

									label4 = ttk.label(root,text='文件名')

									#存储输入框中输入的变量

									locofpicture = stringvar()

									heightofpicture= stringvar()

									widthofpicture = stringvar()

									nameofimg = stringvar()

									entry1 = ttk.entry(root,textvariable = locofpicture,width=50)

									entry2 = ttk.entry(root,textvariable=heightofpicture,width=10)

									entry3 = ttk.entry(root,textvariable=widthofpicture,width=10)

									entry4 = ttk.entry(root,textvariable=nameofimg,width=25)

									button1 = ttk.button(root,text='确定',command=searchpicture)

									button2 = ttk.button(root,text='确定生成',command=setpicture)

									#进行界面布局

									label1.grid(column=0,row=0)

									entry1.grid(column=1,row=0,columnspan=3)

									button1.grid(column=4,row=0)

									label2.grid(column=0,row=1)

									entry2.grid(column=1,row=1)

									label3.grid(column=2,row=1)

									entry3.grid(column=3,row=1)

									entry4.grid(column=1,row=2,columnspan=2)

									button2.grid(column=3,row=2)

									root.mainloop()

效果图：

python如何制作缩略图

小编再分享一段代码：

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									#!/usr/bin/env python

									#coding=utf-8

									'''

									created on 2012-6-2

									@author: fatkun

									'''

									import image

									import os

									import sys

									import glob

									import time

									def make_thumb(path, thumb_path, size):

									 """生成缩略图"""

									 img = image.open(path)

									 width, height = img.size

									 # 裁剪图片成正方形

									 if width > height:

									  delta = (width - height) / 2

									  box = (delta, 0, width - delta, height)

									  region = img.crop(box)

									 elif height > width:

									  delta = (height - width) / 2

									  box = (0, delta, width, height - delta)

									  region = img.crop(box)

									 else:

									  region = img

									 # 缩放

									 thumb = region.resize((size, size), image.antialias)

									 base, ext = os.path.splitext(os.path.basename(path))

									 filename = os.path.join(thumb_path, '%s_thumb.jpg' % (base,))

									 print filename

									 # 保存

									 thumb.save(filename, quality=70)

									def merge_thumb(files, output_file):

									 """合并图片"""

									 imgs = []

									 width = 0

									 height = 0

									 # 计算总宽度和长度

									 for file in files:

									  img = image.open(file)

									  if img.mode != 'rgb':

									   img = img.convert('rgb')

									  imgs.append(img)

									  if img.size[0] > width:

									   width = img.size[0]

									  height += img.size[1]

									 # 新建一个白色底的图片

									 merge_img = image.new('rgb', (width, height), 0xffffff)

									 cur_height = 0

									 for img in imgs:

									  # 把图片粘贴上去

									  merge_img.paste(img, (0, cur_height))

									  cur_height += img.size[1]

									 merge_img.save(output_file, quality=70)

									if __name__ == '__main__':

									 root_path = os.path.abspath(os.path.dirname(__file__))

									 img_path = os.path.join(root_path, 'img')

									 thumb_path = os.path.join(img_path, 'thumbs')

									 if not os.path.exists(thumb_path):

									  os.makedirs(thumb_path)

									 # 生成缩略图

									 files = glob.glob(os.path.join(img_path, '*.jpg'))

									 begin_time = time.clock()

									 for file in files:

									  make_thumb(file, thumb_path, 90)

									 end_time = time.clock()

									 print ('make_thumb time:%s' % str(end_time - begin_time))

									 # 合并图片

									 files = glob.glob(os.path.join(thumb_path, '*_thumb.jpg'))

									 merge_output = os.path.join(thumb_path, 'thumbs.jpg')

									 begin_time = time.clock()

									 merge_thumb(files, merge_output)

									 end_time = time.clock()

									 print ('merge_thumb time:%s' % str(end_time - begin_time))