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Objective 2.02

Computer Animation

TermDefinition
Persistence of Vision The way our eyes retain images for a split second longer than they actually appear.
Frame-by-Frame Animation Rapidly displaying images, or frames, in a sequence to create the optical illusion of movement.
Computer Assisted Animation Usually involves 2D images. The images are positioned into keyframes containing the most important movements. Tweening is then performed by the computer to create images between keyframes.
Computer Generated Animation All images, objects and animations are created on the computer. Typically uses 3D images. Adds two steps to the animation process.
Path Animation Also called vector animation. An object follows a path which is a line, or vector, inserted by the animator. The computer calculates the correct position of the object as it moves along the path and generates the frames to create the animation.
Morphing Animation Changing one image into another. The transformation of one thing into another.
Programming or Scripting-Based Animation Requires knowledge of a programming or scripting language. Example: Rollover or Mouseover
Rollovers When the mouse is moved over an image, it changes to a different image so quickly that it looks as if the change has occurred in a single instant.
Stop Motion Animation Process of manipulating real-world objects and photographing them one frame at a time. Then the frames are put together to make a movie.
Stage The part of the animation program window where the animation's content is composed and manipulated.
Frame Holds the content that the movie displays or plays at that point in time.
Keyframe Shows where the key actions occur. The frames you create.
Timeline The part of the animation program window that organizes and controls an animation's content over time using layers and frames.
Library Stores frequently used graphics, movie clips, and buttons.
Playhead Vertical red marker in the timeline that shows which frame is the current frame.
Scrubbing Dragging the playhead across the timeline in order to preview the animation.
Tweening The images between keyframes.
Compression The compression process removes sounds that humans can't hear.
MP3 A standard format for music files sent over the Internet that compresses music or other types of audio.
WAV The standard format for sound on computers running the Windows operating system. WAV files produce high-quality sound and generate large file sizes.
Executable File Bundles both the animation and the program to play in a single file.
Plug-in A program that works with the browser to expand its capabilities.
Standalone Player A separate program that can play video and audio files without the browser software being open.
Bandwidth The amount of data that can be transmitted over a network in a given amount of time.
Streaming A technique for transferring audio and video files over the Internet as a continuous stream of data.
Streaming Rate The rate in frames per second at which videos can be downloaded or transferred to a computer.
Playback Rate The rate in frames per second at which the video plays.
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