http://www.minning.de/software/celulighti stumbled across this and was wondering if it might aid you at all?
Celulight takes drawn outlines or cels as source files to create clean, smooth normal maps for shading with my other tool, Normality.
Features
Traditionally painting 2D cels by hand is a time-staking and labor intensive process and is therefore rarely used in low-end cartoon productions. This omission can result in a cheap and low-end look. Celulight is capable of automating this process nearly 100%.
In combination with Normality, Celulight creates a really fresh look for cartoons and anime which might otherwise be cost prohibitive or even impossible to achieve.
* Celulight automatically generates normals maps
* Temporal smoothing avoids artifacts
* Spatial smoothing provides clean maps
Author
