open, show, png, blank

Nelson Tong <[email protected]> Thu, 26 Jan 2012 17:28:50 -0500

Newsgroups	gmane.comp.python.image
Message-ID	<CAK+C3jfHW=FxPZ+i49UHio6fmhGc36xNooa20-AupbnkSza8Uw@mail.gmail.com>

I tried the following for a png file.

  outI = Image.open( fileOutPNGFile )
  outI.show();

The code run without error, but the image return via X-windows  on my
linux machine is a blank image, without visible graphic on it.

I am 100% positive that the image of fileOutPNGFile is not corrupted
because I am able to open it via the web-browser.

I tried the same code another to open  another png file which I use
PIL to draw and save as png.   The code above is able to open and show
this png file properly.

why dose this happen?
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