P1 ROTOSCOPING

Rotoscoping is something of which many people use nowadays in animation and animation only. This is where an artist traces over the footage they have made in a frame by frame process, when this is done it's then used in live-action and animated films.
 To trace recorded live-action clips, they are projected onto a 'frosted glass panel' and then the animator traces and regenerates what they are seeing in front of them on the frames themselves.
The same work can now be done with digital images and special computer software. Rotoscoping is frequently used as a technique for combining mainly cartoon figures with realistic settings in television commercials and is also used for special effects in feature-length films. 

The projection that projects the images on the panels is called a 'Rotoscope'.
Define Rotoscoping 'transfer (an image from live action film) into another film sequence using a rotoscope'
Disney studios had used the technique of rotoscoping which was used  to film scenes with real actors and sets. These scenes were then drawn and were then used as references for the Disney animators to help them visualize the scenes, postures and movements to draw. It comes across in a lot of the older films by Disney all contain it.