Page 21 - DCAP313_LAB_ON_COMPUTER_GRAPHICS

Unit 2: Graphics Systems
Avinash Bhagat, Lovely Professional University

Unit 2: Graphics Systems Notes

CONTENTS

Objectives
Introduction
2.1 Computer Graphics System
2.1.1 Scientific Visualization
2.2 Video Display Devices
2.2.1 Cathode-Ray-Tubes
2.3 Vector Scan/Random Scan Display
2.4 Raster Scan Systems
2.4.1 Difference between Raster Scan and Random Scan Technique

2.4.2 Important Characteristics of Video Display Devices
2.5 Resolution
2.6 Colour Displays
2.6.1 How we See Colour
2.6.2 Pixels and Colour Depth
2.6.3 Colour Depth and Graphics Files
2.7 Frame Buffer
2.7.1 N-bit Colour Frame Buffer
2.8 Summary

2.9 Keywords
2.10 Review Questions
2.11 Further Readings

Objectives

After studying this unit, you will be able to:
• Discuss the computer graphics system

• Explain the video display devices
• Discuss vector scan/random scan display

• Define raster scan systems
• Explain colour displays
• Understand frame buffer

Introduction

The term computer graphics explains any use of computers to create and manipulate images.
Graphics can be two- or three-dimensional; images can be fully synthetic or can be produced
by manipulating snaps. Many powerful tools have been developed to imagine data. Computer

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