important questions on computer graphics

What is computer Graphics? Explain Interactive and Non-interactive

In computer science computer graphics is an art of drawing pictures, lines, charts etc on computers screen. To display a picture of any size on a computer screen is very difficult process. It is simplified by using Computer graphics. Graphics on the computer screen are produced by using various techniques and algorithms.

Non-Interactive or Passive Computer Graphics:

In non-interactive  or passive computer graphics, the picture is produced on the computer screen, and the user does not have any control  over the  image. In simple wording the user cannot make any change on an image. Example: screen savers.

In non-interactive computer graphics use can only see the produced image. The produced image can not be changed by the user. It is one-way-communication between user and computer.

Non Interactive Computer Graphic

Interactive Computer Graphics:

In interactive Computer Graphics user can make some changes on produced image. In simple user have some kind of controlled over picture. Interactive Computer Graphics require two-way communication between the computer and the user. A User can see the produced image and make change by sending his command by using input device.

Interactive Computer Graphics System

Advantages:

  1. Higher Quality resulation
  2. More precise results
  3. Greater Productivity
  4. Lower analysis and design cost
  5. Significantly enhances our ability to understand data.

Working of Interactive Computer Graphics:

The modern graphics display is very simple in construction. It consists of three components:

  1. Frame Buffer or Digital Memory Buffer
  2. A Monitor likes a home T.V.
  3. Display Controller or Video Controller:

Difference between Interactive and non- Interactive Computer Graphics

Interactive Computer Graphics  Non-Interactive Computer Graphics 

Image can be changed by user

It is Two way communication between user and computer

For example: Almost all computer have interaction with user.

Image can not be change be changed by user

It only on way communication by user and computer

For Example: The familiar example of non interactive computer graphic is TV broadcasting.