UNIT -1 INTRODUCTION TO COMPUTER GRAPHICS chapter 1-10 COMPLETE STUDY GUIDE WITH END OF CHAPTER TEST BANK
UNIT -1 INTRODUCTION TO COMPUTER GRAPHICS chapter 1-10 COMPLETE STUDY GUIDE WITH END OF CHAPTER TEST BANK 1.1 DEFINITION OF COMPUTER GRAPHICS Computer Graphics is principally concerned with the generation of images, with wide ranging applications from entertainment to scientific visualisation. In other words, we can say that computer graphics is a rendering tool for the generation and manipulation of images. Thus, by using a computer as a rendering tool for the generation and manipulation of images is called computer graphics. Computer graphics is an art of drawing pictures on computer screens with the help of programming. It involves computations, creation, and manipulation of data. Graphics is a vast field that encompasses almost any graphical aspect like special effects, simulation and training, games, medical imagery, animations and much more. “Computer Graphics refers to any sketch, drawing, special artwork or other material generated with the help of computer to pictorially depict an object or a process or convey information, as a supplement to or instead of written descriptions”. It relies on an internal model of the scene, that is, a mathematical representation suitable for graphical computations. The model describes the 3D shapes, layout, projections to compute a 2D image from a given viewpoint and rendering which involves projecting the objects (perspective), handling visibility (which parts of objects are hidden) and computing their appearance and lighting interactions and materials of the scene. 1.2 HISTORY OF COMPUTER GRAPHICS In the 1950’s, graphics output were taken via teletypes, line printer, and Cathode Ray Tube (CRT). Using dark and light characters, a picture could be reproduced. In the 1960’s, advent of modern interactive graphics, output were vector graphics and interactive graphics. One of the worst problems was the cost and inaccessibility of machines. In the early 1970’s, output started using raster displays, graphics capability was still fairly chunky. In the 1980’s output were built-in raster graphics, bitmap image and pixel. Personal computers costs decreased drastically; trackball and mouse become the standard interactive devices. In the 1990’s, since the introduction of VGA and SVGA, personal computer could easily display photo-realistic images and movies. 3D image renderings became the main advances and it stimulated cinematic graphics applications. Table 1: gives a general history of computer graphics.
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- COMPUTER GRAPHICS
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- February 27, 2024
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mca paper x computer graphics
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introduction to computer graphics
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