Attached Link: http://www.vpainter.com/

Rotoscoping is where live characters are photographed then animation cells are drawn over each frame. This is done to get world events and timing right when animating. The Warner Brothers cartoon Swing Shift Cinderella had a dance scene that was rotoscoped. This was the character that Jessica Was baised on in "Who Framed Rodger Rabbit?" Lot's of the Battle Scenes in Ralph Bakshi's "Wizards" were very badly rotoscoped from old nazi war footage. I'm assuming an "Interpolating Rotoscoper" allows the animator to draw Keyframes for cells then creates animation cells by tracking the movements in the live action footage. The bad news is the plugin was created by Richard Linklater's group in Warner Indipendant Films. It's not likely this will be offered with Max Or Maya any time soon. The other bad news is that the Animation cells were probably hand done combining several techniques. I don't think there is a plugin you can use on still frames to exactly achieve that effect. Virtual painter is a possibility. There are also some redfield plugins that work in photoshop or paintshop.