Animation

            Animation is commonly used in those instances where video graphic is not possible. Animation can better illustrate the concept than video. For example, collision between two stars, or movement of planets around sun; cannot be video graphed, hence, can be best illustrated with the help of an animation clip. Similarly flow of blood in our arteries and veins, and pumping of blood by our heart can best illustrated with the help of animation clip. Animation is also very commonly used in advertisements, cartoon films, video games and virtual reality applications. Virtual reality is a relatively new computer technology, using which the user can put on a pair of goggles and a glove and tour a three-dimensional world that exists only in the computer, but appears realistic to the user.


Hardware Requirement for Animation:

Computer animation generally involves the following hardware devices:

1. 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 animation.

2. Computer monitors with image display capability is the minimum requirement for outputting (displaying) animation. In addition, multimedia computer system capable of handling animation also require a graphics accelerator board, which 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, which make up the animation can be display quicker.


Software Requirements for Animation:

The following software capabilities are highly desirable in a multimedia computer system with animation:

1. Animation creating software: It allows the user to create animation sequence from scratch by using a mouse and various simple objects, such as lines, circles and polygons with various supporting colors.

2. Screen capture software: It is used to capture the display of a computer screen as graphic images, which can be used in animation.

3. Animation Clips: This is a library of animation clips from which one can select and directly import an animation clip and use it in a multimedia application saving the time and efforts, which might otherwise be required to create a similar animation clip.

4. Animation file importing: The task of creating a multimedia application incorporating animation can often be greatly simplified, if the application software can import animation files in some standard formats. Common animation file formats include .FLC and .FLI.

5. Software support for high resolution: If the animation sequences of a multimedia. application are made up of very high quality images, it is important to have not only the necessary hardware, but also software support for displaying high resolution images, which have many colors to maintain the high quality of animation display.

6. Recording and playback capability: It allows. the user to control the recording and display of an animation sequence. For example, it provides the user with options to 'pause' and relay the animation sequence.

7. Transition effects: Animation can be even more interesting, if it is enhanced with transition effects, such as fade-out, layering, zooming and rotation of objects.

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