Re: Morning Tea
Barsha thanks comments and for the question.
The technique is a combination of hand paint, multi-layers and image operations. The hand paint defines where the color goes. The paint look (color texture transparency etc) is defined by the image operations. These are also done on multiple layers and composited. Finally, the multi-layered approach allows the "sketch" part to be kept separate.
The most complex part is actually the sketch. I am trying to create and automated process for the sketch. (Un)fortunately that which is intuitive to the human brain in terms of knowing how to outline an image in an artistic manner, versus a simple edge finding operation is very difficult. So as of yet I have not truly succeeded.
If one were involved in a production issue and had to get a series of images done for a deadline it would be far faster to hand draw the outlines. But my goal is to define a process that can be used to rotoscope an animation so the investigation is worth the effort.
cogito ergo sum --should have been
sum est cogitavi