I'll look more into im.transform and see what I can come up with. I'm not sure I fully understand what it does, but I'm reading it as I'll remove the wanted section of im and trash the rest. I'm more-so looking for a way to maybe divide an image into quantrants for individual manipulation without having to split and rebuild the image.
My goal with these two features is I'd like to create a way to compare an image for changes based on an area of the image, rather then the entire image. Lets use the quadrants for example (mental code).
1,2
3,4
^ this is how the quad appears on the image (upper left, upper right, etc...)
for space in quad:
if newpic[space].tostring() != oldpic[space].tostring():
oldpic[space] = newpic[space]
else :
# Dont really care because this [space] isn't important.
On 11/8/06, Danny Yoo <
[EMAIL PROTECTED]> wrote:
On Wed, 8 Nov 2006, Chris Hengge wrote:
> I'm trying to figure out how to compare im1 to im2 and recognize the
> difference. I dont care what the difference is...
>
> something like
>
> if im1 is not im2:
> print "Not same"
Do not use 'is' here. It is not doing any kind of equality testing at
all. We had a discussion about 'is' just a few days ago:
http://mail.python.org/pipermail/tutor/2006-November/050680.html
According to:
http://www.pythonware.com/library/pil/handbook/image.htm
the im.getdata() function looks interesting.
> I've tried im.tostring() but that doesn't ever enter the loop either.
This should have worked. I'm not sure if you tried comparing
two strings using 'is' or not.
> Second question is this:
> Is there a way to divide the screen so I only grab maybe the lower right
> 200x200 pixels or some such?
> Or possibly a way to seperate the image into a grid so I could just take the
> grid I wanted?
im.transform() from the documentation link above looks relevant. Is that
what you're looking for?
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