python如何制作缩略图

Python  /  管理员 发布于 7年前   252

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

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：

小编再分享一段代码：

#!/usr/bin/env python#coding=utf-8'''Created on 2012-6-2 @author: fatkun'''import Imageimport osimport sysimport globimport 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))

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。