Rotoscope

A rotoscope is a device that enables animators to trace live action movement, frame by frame, for use in animation. Originally, pre-recorded live-film images were projected onto a matte windowpane and redrawn by an animator. The device was invented by Max Fleischer, who used it in his series "Out of the Inkwell" starting around 1914, with his brother Dave Fleischer dressed in a clown outfit as the live-film reference for the character Koko the Clown.

Notable films that use rotoscope

• Snow White and the Seven Dwarfs
• Sleeping Beauty
• Gulliver's Travels (1939 Fleischer Studios version)
• The 1940s Superman cartoons
• The Lord of the Rings (1978 Ralph Bakshi version)
• American Pop
• Tron
• The Secret of NIMH
• An American Tail
• The Little Mermaid
• Beauty and the Beast
• Aladdin
• Pocahontas
• '
• Lilo & Stitch
• Yellow Submarine
• Who Framed Roger Rabbit
• A Scanner Darkly
• Waking Life