[Image-SIG] question and bug?

[Mike Coleman]

Carl Haugan <carl@cyberoptics.com> writes:
> What sort of function?  A simple X = a*Y + (1-a)*Z can be done with
> Image.blend(Z,Y,a);  for more complex functions (X = Y * cos(Z) ) I like
> to use Numeric.  

The latter sounds closer to what I'd like to do (the function is a messy
function from X,Y to X0,Y0), but I don't see how to get pixel data in and out
of an Image (aside from saving it to a file).  I've read the doc, but maybe I
missed it.  How can I just manipulate pixel values directly, one by one?

--Mike

> 
> Mike Coleman wrote:
> > 
> > Hi,
> > 
> > I was playing with the Image module, and have a question and maybe see a bug.
> > The question is, is there any way to set individual pixels?  That is, I'd like
> > to compute a channel as a function of two other channels.  Is this possible?
> > 
> ....
> > _______________________________________________
> > Image-SIG maillist  -  Image-SIG@python.org
> > http://www.python.org/mailman/listinfo/image-sig
> 
> -- 
> Carl Haugan                       carl@cyberoptics.com
> CyberOptics Corporation
> Minneapolis, MN
> 

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