Page 224 - DCAP504_Computer Graphics

Unit 14: Animation in Computer Graphics

Examples of traditional animated feature films are Pinocchio, Animal Farm and
Akira.
Examples of traditional animated films made using computer technology are
Lion King, Sen to Chihiro no Kamilakushi (Spirited Away), Les Triplettes de
Belleville.

Nowadays, a complete animated film is done in a variety of styles such as the films produced by Walt
Disney to the Cartoon Styles produced by the Warner Brothers.
Computer Animation

Computer animation uses a variety of techniques to be created digitally on a computer.
The following are some of the techniques:
1. 2-D Animation: In 2-D animation, figures are created and edited on the computer by either using
2-D bitmap graphics or by using 2-D vector graphics. This method uses the traditional animation
techniques like tweening, morphing, onion skinning, and interpolated rotoscoping.

Foster's Home for Imaginary Friends, Danny Phantom, Waltz with Bashir, The
Grim Adventures of Billy and Mandy are some of the examples for 2-D films.

2. 3-D Animation: In 3-D animation the figures are digitally modeled and manipulated using an
animator. A process known as rigging is carried out. In this process to manipulate a mesh, a
digital skeletal structure is used to control the mesh. Techniques like mathematical functions,
simulated fur or hair, effects such as fire and water and the use of motion capture, fall under the 3-
D dynamics. Sometimes it is difficult to distinguish between 3-D animations and live actions. In
such cases visual effects are used.

2-D animation techniques focus on image manipulation while 3-D techniques build
virtual worlds in which characters and objects move and interact. 3-D animation can
create images that seem real to the viewer.

14.2 Additional Visual Effects

Visual effects, also known as special effects, or VFX or FX are applied to computer generated effects
called Computer generated imagery (CGI). CGI deals with the field of special effects and is used to
create effects in films and television commercials. Video games use real time computer graphics.

Visual effect is a process by which images are created and manipulated in the absence of a live action
shoot. The live action footage and the generated imagery are integrated to create an environment which
looks realistic.

Today, visual effects using CGI have become very common in big budget films. Through affordable
animation and the right assembled software, a novice film maker can make brilliant visual effect films.

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