[Image-SIG] Creating a Transparent Image and Placing it Over Another Image

Wayne Watson sierra_mtnview at sbcglobal.net
Mon Apr 6 06:47:13 CEST 2009

So far I've used Python with Tkinter, and a touch of PIL. I'm pretty 
bound by Tkinter, since I'm modifying a program that used it quite a bit 
for the GUI ability rather than analysis of images with IP (image 

Christopher Barker wrote:
> Wayne Watson wrote:
>>  I would like to create a transparent image with a circle on it and a 
>> crosshair at the center of the circle, then place it on top of the 
>> first (real) image (produced by the h/w). I have no trouble drawing 
>> on the real image, but I'd like use this transparency idea here. The 
>> reason is that eventually I'd like the user to drag around the circle 
>> over the real image, 
> I'm not sure what GUI toolkit you're using, but it probably makes 
> sense to use the toolkits drawing routines for this kind of thing.
> I know it's pretty easy with wxPython -- look fro various articles in 
> the Wiki by searching for "drawing". Also, under "images", I think 
> you'll find info about interfacing between IL images and wx.Image.
> -Chris


           Wayne Watson (Watson Adventures, Prop., Nevada City, CA)

             (121.01 Deg. W, 39.26 Deg. N) GMT-8 hr std. time)****

          "Less than all cannot satisfy Man." -- William Blake

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