Creating Blank Images in Python (allowing pixel by pixel manipulation)

Question

I have this code here that creates a Tkinter Canvas widget, then embeds an image within it.

import Tkinter
from PIL import ImageTk, Image


class image_manip(Tkinter.Tk):

    def __init__(self):
        Tkinter.Tk.__init__(self)

        self.configure(bg='red')

        self.ImbImage = Tkinter.Canvas(self, highlightthickness=0, bd=0, bg='blue')
        self.ImbImage.pack()

        self.i = ImageTk.PhotoImage(Image.open(r'test.png'))
        self.ImbImage.create_image(150, 100, image=self.i)


def run():
    image_manip().mainloop()
if __name__ == "__main__":
    run()

I'd like to be able to create a blank image within the Canvas widget, so that I could do pixel by pixel manipulation within the widget. How would one go about this?

Do exactly the same thing as you're doing in http://stackoverflow.com/questions/4847706/using-pils-imagedraw-module, except use `Image.new` instead of `Image.open`. — mpenkov, Jan 31 '11 at 05:19

score 13 · Accepted Answer · edited Feb 07 '22 at 09:14

13

To create a new blank image (rather than opening one), you can use the Image.new(...) method in place of your Image.open(...). It is described in The Image Module.

Then call self.i.put(...) to do pixel-by-pixel manipulation. (i is the PhotoImage object as in your example.)

Here's some general information on The Tkinter PhotoImage Class.

edited Feb 07 '22 at 09:14

martineau

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answered Jan 31 '11 at 03:37

Paul

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Actually here is where Image.new(...) is described: http://www.pythonware.com/library/pil/handbook/image.htm – Nate Apr 17 '13 at 23:33

Creating Blank Images in Python (allowing pixel by pixel manipulation)

1 Answers1