[Image-SIG] New patch to PIL

[Laszlo Zsolt Nagy]

Joao S. O. Bueno Calligaris wrote:

>HI,
>
>I am no PIL developer - I do n't even recall if I ever even built it 
>at all - but I have some code I wrote a while ago that could do a 
>"generic" combination of two given images, maybe somewhat fast, given 
>a kind of  "bytecode"  representing an algebraic expression to use 
>with the pixels (just like your expression in the "output" of the 
>first e-mail).
>
>If your improvements is going into pil, maybe it will be worth for 
>everyone consider adding some of that code as well. (So that, for 
>example, any of the GIMP's mare than 20 image combination modes would 
>be available in PIL doing as little as adding a constant bytecode for 
>each mode).
>  
>
Have you checked the ImageMath module? It is in the upcoming release of PIL.

http://effbot.org/imagingbook/imagemath.htm

The problem with it is that it can only process one band images. 
Sometimes split -> imagemath -> merge cannot do what you need.

  Les