Question about the 101 Dalmatians bonus-DVD

[Rumpelstiltskin]

I know that the xerox process was mentioned, but did they mentioned cel overlay, which was used to make the bakcground match the characters? Like the xerox process, line overlay had never been used in an animated feature before, from what I understand.

Then we have how Cruella DeVil's car was made. From Wikipedia:

"A method that is related to conventional rotoscoping was later invented. If the movie was supposed to contain inanimate objects like a car or a boat, a small live action model of the object(s) was built and painted white, while the edges of the model were painted with thin black lines. In the next stage the object was filmed like it was supposed to move in the animated scene, either by moving the model or filming it while the camera was sweeping over or around it, or using a combination of both. The film frames were then printed on paper, showing a model made up of the painted black lines. After the artists had added details to the object not present in the live action version of the model, it was xeroxed onto cels. (A notable example is Cruella's car in One Hundred and One Dalmatians.) "

Had this kind of rotoscoping technique been used before in animation, or was it first used in 101 Dalmatians? And was it mentioned on the bonus-DVD?

If this was not included, maybe it will when the Blu-ray version is released. If it is, then maybe I should buy the DVD.

[SpringHeelJack]

I think they mention cell overlay briefly, and they show the actual process of filming the miniature DeVil car for use in the movie.

[Rumpelstiltskin]

Nice to hear. They could perhaps focused even more on these little details, but at least they are included.

[MagicMirror]

Don't quote me on this, but I think that Stromboli's caravan, and the cage he locks Pinocchio in, used a similar technique.

There is a page or so about it in Frank and Ollie's book The Illusion of Life, which I unfortunately don't have with me at the moment.

[Rumpelstiltskin]

Perhaps it was the traditional rotoscoping used on inanimate objects. Or maybe they actually did paint small models in white with black lines and then filmed it.