Face Replacement On Models

Face Armatures
A rigid head made of plastic works best for stylised designs with a simpler look, but other puppet designs will call for a bit more mobility in the face. Because human and animal faces are often just as flexible a piece of design as the rest of the body, some puppet faces will be rigged with armature pieces to be animated. Posable paddles, wires, or other mechanisms can be built to simulate movement of the jaw, lips, brow and eyebrows of the puppet face. In many cases, a movable face armature will be covered with a flexible material like foam latex or silicone. This will cause the surface of the face to bulge and stretch like real skin for the facial features that are manipulated underneath. Pulling and pushing on a jaw or an eyebrow paddle on the surface of the face creates a unique range of possible emotions for the animator.

(Priebe and Selick, 2010, pp. 124 – 124) Replacement Faces and Rapid Prototyping Rapid prototyping, or 3D printing is to create a 3D computer model and have it printed out as a physical replica. The technology behind rapid prototyping has many other uses and implications in itself, but the film Coraline helped put it on the map for the use as an animation technique. The area of the film where it was used the most was the facial animation on certain main characters. The faces on characters like Wybie, Coraline's Mother, Other Mother, and Coraline herself consisted of thin replacement masks that were removed and replaced for each frame of the animation. Replacement animation for facial expressions is a technique that has been around since the very beginning of the stop-motion medium. It likely grew out of the logic behind out of the logic behind hand-drawn animation, where every frame consisted of a separate drawing that was different than the one before it, and each drawing was replaced under the rostrum camera for shooting. Adapting this idea to stop-motion meant that every frame would consist of a separate face that was replaced for each frame. The earliest known use of replacement faces appears to be from the MoToy Comedies by American filmmaker Howard S. Moss in 1917. Most of these films are lost, but the few that exist feature a dopey character with exaggerated facial expressions. A small number of in-between faces would help to transition from one key expression to another for a caricatured effect. Later evidence of replacement faces is found in the Kinex Studio short films from 1928 to 1930, in the characters of Snap the Gingerbread Man and the recurring witch character. It is not entirely clear what materials were used to create the faces for the characters in these early films, but they appear to be sculped in clay and then either baked or molded. To keep the consistency between faces, it is likely that a clay sculpt was made and cast out in a mold, and then a tiny transitional change was made in sculpt for each sequential cast. These puppets usually had only one or two in-between faces between each expression. (Priebe and Selick, 2010, pp. 138 – 139) Priebe, K. A. and Selick, H. (2010) The Advanced Art of Stop-Motion Animation [With CDROM]. 1st edn. Boston, MA: Course Technology Cengage Learining.