python通过PIL缩放互联网上的图片并保存
发布时间:2020-12-17 17:07:26 所属栏目:Python 来源:网络整理
导读:今天PHP站长网 52php.cn把收集自互联网的代码分享给大家,仅供参考。 ''' tk_image_view_url_io_resize.pydisplay an image from a URL using Tkinter,PIL and data_streamalso resize the web image to fit a certain si
以下代码由PHP站长网 52php.cn收集自互联网 现在PHP站长网小编把它分享给大家,仅供参考 ''' tk_image_view_url_io_resize.py display an image from a URL using Tkinter,PIL and data_stream also resize the web image to fit a certain size display widget retaining its aspect ratio Pil facilitates resizing and allows file formats other then gif tested with Python27 and Python33 by vegaseat 18mar2013 ''' import io from PIL import Image,ImageTk try: # Python2 import Tkinter as tk from urllib2 import urlopen except ImportError: # Python3 import tkinter as tk from urllib.request import urlopen def resize(w,h,w_box,h_box,pil_image): ''' resize a pil_image object so it will fit into a box of size w_box times h_box,but retain aspect ratio ''' f1 = 1.0*w_box/w # 1.0 forces float division in Python2 f2 = 1.0*h_box/h factor = min([f1,f2]) #print(f1,f2,factor) # test # use best down-sizing filter width = int(w*factor) height = int(h*factor) return pil_image.resize((width,height),Image.ANTIALIAS) root = tk.Tk() # size of image display box you want w_box = 400 h_box = 350 # find yourself a picture on an internet web page you like # (right click on the picture,under properties copy the address) # a larger (1600 x 1200) picture from the internet # url name is long,so split it url1 = "http://freeflowerpictures.net/image/flowers/petunia/" url2 = "petunia-flower.jpg" url = url1 + url2 image_bytes = urlopen(url).read() # internal data file data_stream = io.BytesIO(image_bytes) # open as a PIL image object pil_image = Image.open(data_stream) # get the size of the image w,h = pil_image.size # resize the image so it retains its aspect ration # but fits into the specified display box pil_image_resized = resize(w,pil_image) # optionally show resized image info ... # get the size of the resized image wr,hr = pil_image_resized.size # split off image file name fname = url.split('/')[-1] sf = "resized {} ({}x{})".format(fname,wr,hr) root.title(sf) # convert PIL image object to Tkinter PhotoImage object tk_image = ImageTk.PhotoImage(pil_image_resized) # put the image on a widget the size of the specified display box label = tk.Label(root,image=tk_image,width=w_box,height=h_box) label.pack(padx=5,pady=5) root.mainloop() 以上内容由PHP站长网【52php.cn】收集整理供大家参考研究 如果以上内容对您有帮助,欢迎收藏、点赞、推荐、分享。 (编辑:李大同) 【声明】本站内容均来自网络,其相关言论仅代表作者个人观点,不代表本站立场。若无意侵犯到您的权利,请及时与联系站长删除相关内容! |