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What is Computer Animation?

A laptop that can be used for computer animation.
A flower drawn by an animation artist.
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  • Last Modified Date: 06 September 2014
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Computer animation can be described as an art form that involves bringing still images to life using computer technology. Animation in this form can apply to images on a computer or to those in film. When is used for movies, this technology is often called computer-generated imagery (CGI).

To create computer animation, a still, or non-moving image, is first displayed. With speed in mind, this image is then replaced with another image. The new image is very similar to the first, but has been changed in some small way. Each subsequent image is changed slightly. This combination of rapid image replacement and slight alteration of images creates the illusion of movement. Though computer technology is used for animation, the technique of creating the look of movement is the same as that used for television and movie animation.

To understand how movement is created with computer animation, consider a blank screen. Now imagine a person drawn on the left side of the screen. Then imagine the screen is blank again, and the next time you see the image of the person, it is positioned just a little to the right of its initial position. Once more, the screen is blanked, and the person is moved a bit more to the right. At a high speed, this slight movement of the image will result in the appearance of smooth movement to the right.

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Speed is key to the success of computer animation. To give the illusion of smooth movement, complete images, often called frames, must be shown at speeds of at least 12 images per second. At lesser speeds, the human eye is able to detect a certain amount of jerkiness. Interestingly, however, there is no advantage to showing images at speeds of 70 frames per second or more, as there is no noticeable improvement in movement perception at speeds this high.

When animation is created using conventional hand-drawn methods, it is not uncommon to use 15 frames per second. This is done to economize on the amount of drawings necessary to create the animation. However, computer animation is often used to create more realistic looking images. As such, the use of more frames per second is typically necessary.

A computer and special animation software are necessary for the creation of computer animation. There is a wide variety of animation software on the market today, with prices varying according to the intended use. In general, animation software intended for the novice to enjoy for fun or for simple animation is less costly. Software for more professional animation is not only more expensive, but also more comprehensive. However, even the most basic animation programs are capable of creating some amazing animations.

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anon144556
Post 6

What is the history of computer animation?

Pimiento
Post 5

@win199 - You could also count "Claymation" as a part of the stop motion genre of animation. Claymation is even more involved that since each frame that is shot requires the reshaping of the clay made characters. It can also become quite simple depending on the level of animation that's required or desired. There are a lot of computer animation colleges that help you decide what aspects of animation you'd like to go through. It's really becoming a hot topic and a great career as technology is continually advancing.

win199
Post 4

@pintusachin - Stop motion is a very involved process. It is really the process of stopping and taking pictures and putting them together rather than involving yourself in fluid, continuous motion like that found in a video recording. Most computer animation classes will teach you the difference between certain animation styles or you can just find the rest of the answers on wiseGEEK... that is what I usually do. Stop motion is becoming increasingly popular again as it is a very unique style that can quickly become very expressive and personalized.

ellaesans
Post 3

@pintusachin - Animation is pretty much anything that is not "real" or "real life." You can consider many different mediums to be animation, but the main two in movies today would be hand drawn cartoons and digitally created (or three dimensional) cartoons or movies. 3d computer animation is a little more involved than hand drawn cartoons usually, but both can take a significant amount of time to develop, splice, and edit in order to make a credible motion picture or even a thirty minute video. Hope that helps!

pintusachin
Post 2

what do u mean by animation? what is the meaning of stop motion?

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