Introduction Of Computer Graphic
Computer graphics is an art of drawing picture ,lines , charts, etc using computers with the help of programming .Computer graphics deals with creation ,manipulation and storage of different type of images and objects.
->Computer graphics is concerned with producing images and animations(or sequences of images )using a computer.
-> This includes the hardware and software systems systems used to make these images
->Many software systems have been developed for generating computer graphics.
->This can include system for producing 3 dimensional Models.
History of computer graphics
Computer Graphics (CG) was first developed as a visualization tool.
-> Computer graphics were basically introduced for scientists and engineers in government and corporate research centers, i.e., Bell Labs and Boeing in the 1950s.
-> After then the tools would be developed at Universities in the 60s and 70s at places, i.e., Ohio State University, MIT, University of Utah, Cornell, North Carolina, and the New York Institute of Technology.
->The computer graphics are invented by researchers Verne Hudson and William Fetter of Boeing. It is often brief as computer graphics.
The early development that took place in academic centers continued at research centers such as the famous Xerox PARC in the 1970?s.
->These achievements broke first into broadcast video graphics and then major motion pictures in the late 70?s and early 1980?s.
-> Computer graphic research continues still today around the world. Companies such as Industrial Light and Magic by George Lucas are regularly refining the cutting edge of computer graphic technology to present the world with a new manufactured digital reality.
Crude plotting on hardcopy devices such as teletypes and line printers dates from the
early days of computing.
• The whirlwind computer developed in 1950 at Massachusetts institute of Technology (
MIT) had computer-drive CRT displays for output, both for operator use and for cameras
producing hard copy.
• The SAGE air-defence system developed in the middle 1950’s was the first to use
command and control CRT displays console on which operators identified targets with
the light pens.
->The beginning of modern interactive graphics, however were found in IVAN SUTHER
->LAND’S seminal doctoral work on the sketchpad drawing systems. He introduced data
->structures for storing symbol hierarchies built up via replication of standard components
->( used for drawing circuit symbols). He also developed interaction technique that use the
->keyboard ad light pen for making choices, pointing and drawing and formulating manyother ides and technique still in use today.
->By the mid- sixties, a number of research projects and commercial products had appeared as the potentially of CAD activities in computer, automobile and aerospace grew enormously for automating drafting-insensitive activities.
->The general motor system for automobile design and Intek, Digitek system for lens design were pioneers in showing the efforts utilizing graphics interaction in the interactive cycles common in engineering.
-> Due to the high cost of graphics hardware , expensive computing resources, difficulty in wring large interactive program and due to many other reasons the human computer interaction was still done primarily in both mode using punched cards.
->After the advent of graphics based personal computers such as Apple Macintosh and IBM PC, the costs of both hardware and software droven down.
->Millions of graphics computer were sold exclusively for offices and home. Thus the interactive graphics (GUI) as “the window on the computer” became an integral part of PC featuring graphical interaction.
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