Just a thought....

For poser figures, why not just import the figure (or just the head), suitably posed (no textures needed), then render a height map from it?  For height map, you'd obviously have to rotate the figure/head so it's looking up and use a down-pointing camera angle.

That automatically gives you your basic greyscale image w/o lots of messing about....

Then you could photoplay with that to your heart's content, and finally apply the image to a lattice (or whatever).

@amlan70, I suspect that your baby-face image would almost work "as is" for a lattice height map (apart from the white background - that'd have to be changed)...

Cheers,
Diolma

OTOH, I might not know wtf I'm talking about..