Using PIL and Tkinter you can easily display images in a window.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43
#!/usr/bin/env python """This is a small script to demonstrate using Tk to show PIL Image objects. The advantage of this over using Image.show() is that it will reuse the same window, so you can show multiple images without opening a new window for each image. This will simply go through each file in the current directory and try to display it. If the file is not an image then it will be skipped. Click on the image display window to go to the next image. Noah Spurrier 2007 """ import os, sys import Tkinter import Image, ImageTk def button_click_exit_mainloop (event): event.widget.quit() # this will cause mainloop to unblock. root = Tkinter.Tk() root.bind("<Button>", button_click_exit_mainloop) root.geometry('+%d+%d' % (100,100)) dirlist = os.listdir('.') old_label_image = None for f in dirlist: try: image1 = Image.open(f) root.geometry('%dx%d' % (image1.size,image1.size)) tkpi = ImageTk.PhotoImage(image1) label_image = Tkinter.Label(root, image=tkpi) label_image.place(x=0,y=0,width=image1.size,height=image1.size) root.title(f) if old_label_image is not None: old_label_image.destroy() old_label_image = label_image root.mainloop() # wait until user clicks the window except Exception, e: # This is used to skip anything not an image. # Image.open will generate an exception if it cannot open a file. # Warning, this will hide other errors as well. pass
The PIL Image class has a show() method to display an image. This works OK, but it is slow as it must save the image to a temporary file and then launch an external application to display it. What is even more annoying is that you cannot easily reuse the display window.
I often use PIL to create video filters that iterate over thousands of video frames. I like to display each frame after I am done processing it so I can observe how the image processing is progressing. You can't do this with Image.show() because you would end up with thousands of open windows.
Note that I'm using the Tkinter mainloop backwards from a typical event-oriented Tk application. Normally the Button event would control the iteration and display of file. Instead, I just break out of the mainloop. I do this because this way is simpler and better fits the model for a batch processing script. I just want to update a window with an image. I don't intend to have a more elaborate interface.