Enblend layers (was Re: [ptx] PTmender Version 0.2 "The enlightment")

[Daniel M. German]

 Andrew> On Sun, 15 Jan 2006, Daniel M. German wrote:
 Andrew> Do you want to find an intuitively-editable layer mask such that image A,
 Andrew> image B, the layer mask, and photoshop normal blending mode equals the 
 Andrew> same as the Enblend result?
 >> 
 >> Yes, that is the idea. 

 Andrew> With photoshop blending modes, each output pixel is a function of the
 Andrew> corresponding layer A pixel, layer B pixel, and mask pixel. In Enblend,
 Andrew> each output pixel is a function of a neighborhood of layer A pixels, layer
 Andrew> B pixels, and mask pixels. These neighborhoods can be quite large as they
 Andrew> grow exponentially in the number of blending levels you use. And you have
 Andrew> to consider various boundary conditions (wraparound +/- 180 or not). I 
 Andrew> think it is impossible to reduce this behavior to a function of only three 
 Andrew> pixels that works for every pixel in the image.

I understand. But what I'd like is each layer colour corrected, and
to keep them all in the output. If the image is flattened, then the
result is what enblend creates currently. 

Is this feasible at all? I don't know.


--
Daniel M. German                  "In questions of science the authority of
                                   a thousand is not worth the humble
   Galileo ->                      reasoning of a single individual."
http://turingmachine.org/
http://silvernegative.com/
dmg (at) uvic (dot) ca
replace (at) with @ and (dot) with .