Introduction Computer Graphics

 Introduction Computer Graphics 

Computer graphics is a method and technique for generating and manipulating image on a computer. Another definition " computer graphics is pictorial representation of data."
 Computer graphics is an art of drawing , picture , line , chart etc. using computer with the help of programming . Computer graphic is made of number of pixels. Pixel is the smallest unit of the computer screen .

Types of computer graphics

Basically two types of computer graphics.

Interactive Computer graphics :- Interactive computer graphics involves a two way communication between computer and user . In this computer graphics , the graphics responds to what the user does do it . It can be as simple as changing color when the user moves his mouse over it or it can be a full on graphics animation when the user click on it.

Non Interactive computer graphics :- Non Interactive graphics , user does not interact with computer graphics . In this computer graphics in which user does not have any kind of control over the image . Image is static stored program and will work according to the instruction given in the program .

Application of compute graphics 

1. Computer Aided Design :- CAD used in design of building , automobile , aircraft , watercraft , spacecraft and many other product. Object are display in wire frame outline . Software package provide multi window environment . Provide standard shape and provide animation.

2. Presentation Graphics :- Used to produce illustration for report and generate slide for use with projectors .Commonly used to summarize financial , statistical , scientific economic data for research report. Provide bar-charts , line-graph , pie-chart , surface-graph , time chart.

3. Computer art :- Used in fine art and commercial art. Provide paint brush package and animation package .These package facilities for designing object shapes and object motion . Example is cartoon drawing , painting , product advertising logo design.

4.Entertainment :- Used in motion pictures , music , vedio and telivision  show . Also used in making of cartoon animation film and game industry.

5. Education and Training :- Computer graphics provide models of physical physiological and equipment such as color coded diagram to help trainers understand the operation of system .

6. Visualization :- Provide scientific visualization and business visualization .