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Computer animation

Senin, 26 November 2012

Computer animation encompasses a variety of techniques, the unifying factor being that the animation is created digitally on a computer. This animation takes less time than previous traditional animation.

2D animation

2D animation figures are created and/or edited on the computer using 2D bitmap graphics or created and edited using 2D vector graphics. This includes automated computerized versions of traditional animation techniques such as of, interpolated morphing, onion skinning and interpolated rotoscoping.
2D animation has many applications, including analog computer animation, Flash animation and PowerPoint animation. Cinemagraphs are still photographs in the form of an animated GIF file of which part is animated.

3D animation

3D animation is digitally modeled and manipulated by an animator. The animator starts by creating an external 3d mesh to manipulate, a mesh is a geometric configuration that gives the visual appearance of form to an 3D object or 3D environment. The mesh may have a lot of vertices which are to geometric points which make up the mesh, it is given an internal digital skeletal structure called an armature that can be used to control the mesh with weights. This process is called rigging and can be programmed with movement with keyframes. Other techniques can be applied, such as mathematical functions (ex. gravity, particle simulations), simulated fur or hair, effects such as fire and water simulations. These techniques fall under the category of 3D dynamics.
  • Cel-shaded animation, is used to mimic traditional animation using CG software. Shading looks stark, with less blending colors. Examples include, Skyland (2007, France), Appleseed Ex Machina (2007, Japan), The Legend of Zelda: Wind Waker (2002, Japan)
  • Machinima, Films created by screen capturing in video games and virtual worlds.
  • Motion capture, is used when live action actors wear special suits that allow computers to copy their movements into CG characters. Examples include Polar Express (2004, USA), Beowulf (2007, USA), A Christmas Carol (2009, USA), The Adventures of Tintin (2011, USA)
  • Photo realistic animation, is used primarily for animation that attempts to resemble real life. Using advanced rendering that makes detailed skin, plants, water, fire, clouds, etc. to mimic real life. Examples include Up (2009, USA), Kung-Fu Panda (2008, USA), Ice Age (2002, USA).

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

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