Definition of Computer Graphics:
It is the use of computers to create and manipulate pictures on a display device. It comprises of software techniques to create, store, modify, represents pictures.
Why computer graphics used?
Suppose a shoe manufacturing company want to show the sale of shoes for five years. For this vast amount of information is to store. So a lot of time and memory will be needed. This method will be tough to understand by a common man. In this situation graphics is a better alternative. Graphics tools are charts and graphs. Using graphs, data can be represented in pictorial form. A picture can be understood easily just with a single look.
Interactive computer graphics work using the concept of two-way communication between computer users. The computer will receive signals from the input device, and the picture is modified accordingly. Picture will be changed quickly when we apply command.
Graphics are defined as any sketch or a drawing or a special network that pictorially represents some meaningful information. Computer Graphics is used where a set of images needs to be manipulated or the creation of the image in the form of pixels and is drawn on the computer. Computer Graphics can be used in digital photography, film, entertainment, electronic gadgets, and all other core technologies which are required. It is a vast subject and area in the field of computer science. Computer Graphics can be used in UI design, rendering, geometric objects, animation, and many more. In most areas, computer graphics is an abbreviation of CG. There are several tools used for the implementation of Computer Graphics. The basic is the <graphics.h> header file in Turbo-C, Unity for advanced and even OpenGL can be used for its Implementation. It was invented in 1960 by great researchers Verne Hudson and William Fetter from Boeing.
Computer Graphics refers to several things:
- The manipulation and the representation of the image or the data in a graphical manner.
- Various technology is required for the creation and manipulation.
- Digital synthesis and its manipulation
Types of Computer Graphics
- Raster Graphics: In raster, graphics pixels are used for an image to be drawn. It is also known as a bitmap image in which a sequence of images is into smaller pixels. Basically, a bitmap indicates a large number of pixels together.
- Vector Graphics: In vector graphics, mathematical formulae are used to draw different types of shapes, lines, objects, and so on.
Applications
- Computer Graphics are used for an aided design for engineering and architectural system- These are used in electrical automobiles, electro-mechanical, mechanical, electronic devices. For example gears and bolts.
- Computer Art – MS Paint.
- Presentation Graphics – It is used to summarize financial statistical scientific or economic data. For example- Bar chart, Line chart.
- Entertainment- It is used in motion pictures, music videos, television gaming.
- Education and training- It is used to understand the operations of complex systems. It is also used for specialized system such for framing for captains, pilots and so on.
- Visualization- To study trends and patterns.For example- Analyzing satellite photo of earth.