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Unformatted text preview: nds. Hence animation
files require much more storage space than graphic files involving a single image.
Moreover, to play an animation clip stored in a file on a secondary storage device
like hard disk, it should be possible to read the data at the required rate and
transfer it through the bus to the frame buffer to display it on the monitor.
Hardware Requirements for Animation
Computer animation generally involves the following hardware devices:
Image generation tools and devices such as scanners, digital camera, and
video capture board interfaced to some standard video source like video camera or
video cassette recorder (VCR) are used to generate images to be used in
2. Computer monitors with image display capability (described in the previous
section) is the minimum requirement for outputting (displaying) animation. In
addition, multimedia computer systems capable of handling animation also require
a graphics accelerator board that not only controls the resolution and number of
colors of display, but also speeds up the refresh rate. Refresh rate is the time taken
to paint the computer screen with a new image frame replacing the previous image
frame. Increased speed due to the use of graphics accelerator board smoothes out
the movement (avoids flickering of animated sequences) because subsequent
frames that make up the animation can be displayed more quickly.
Software Requirements for Animation
In addition to the above listed tools and devices, the following capabilities are
highly desirable in a multimedia computer system with animation facility:
Animation creation software. This software allows the user to create
animation sequences from scratch by using a mouse and various simple objects
such as lines, circles and polygons with various supporting colors. For example, an
animation sequence to illustrate bouncing of a ball can be created as follows:
- select a circle object and fill it with red color;
- then start the recorder of the animation creation software;
- then select the colored circle and drag it around the screen using a mouse,
recording several positions f...
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This document was uploaded on 04/07/2014.
- Spring '14