Subject Name: Computer Graphics

Subject Code: 160703

Textbook: “Computer Graphics”, C Version

By Hearn and Baker

Credits: 6

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Topics:

1. A survey of computer graphics• Computer-aided design• Education and training• Graphics user interface

2. Overview of graphics systems

• Video display devices: raster-scan & random scan• Input devices• Graphics software

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Topics:3. Output primitives

• Points and lines operations• Line algorithms• Circle generation algorithms• Polygon operations• Polygon filling

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More topics4. Attributes of output primitives

• Line attributes• Curve attributes• Character attributes• Antialiasing

5. Two-dimensional geometric transformation

• Basic transformations: rotation, scaling, and translation

• Matrix representation and Homogenous coordinate systems

• Composite transformations• Other transformations: reflection and shear

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Yet more topics6. Two-dimensional viewing

• Window to view port coordinate transformations• Two-dimensional viewing functions• Clipping operations: line, point, polygon, and text

7. Three-dimensional concepts• Parallel and perspective projections• Depth cuing• Surface rendering• Visible line and surfaces

8. Three-dimensional transformations• Translations• Rotations• Scaling

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Last but not least9. Three-dimensional viewing

• Viewing coordinates• Transformations to viewing plane• General projection transformations

10. Advance Topics

• Visible surface detection concepts• Back-face detection• Color models

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Introduction

• Computer Graphics involves display, manipulation and storage of pictures and experimental data for proper visualization using computer

• Typical graphics system comprises of a host computer with support of fast processor, large memory, frame buffer, display devices, input devices , output devices.

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Graphics Applications

•Entertainment: Cinema, TV Advt. etc.

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Graphics Applications

•Medical Visualization

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Image-Guided Surgery Project

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Graphics Applications•Everyday uses

• Microsoft’s OS uses graphics seriously

• Graphics visualizations and debuggers• Visualize complex software systems

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Graphics Applications

•Scientific Visualization

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Graphics Applications

•Computer Aided Design (CAD)

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Curve and Surface Modelingin Computer-Aided Design (CAD)

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Graphics Applications•Entertainment: Games

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Information Visualization

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Relevant Disciplines• Art and Graphic Design

• Computer Engineering

• Engineering Design

• Education

• Entertainment

• Medical Science

• Linear Algebra

• Numerical Analysis

• Simulation Studies (e.g. NASA space training center)

• Virtual reality

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Advanced graphics areas•Image processing•Rendering•Modeling•Animation

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Image Processing• Image Representation•Sampling•Reconstruction•Quantization & Aliasing

• Image Processing•Filtering•Warping•Morphing•Composition

• Raster Graphics•Display devices•Color models 18

Rendering: (light, perspective) generating 2Dand 3D images of the objects• 3D Rendering Pipeline•Modeling transformations•Viewing transformations•Hidden surface removal

• Illumination, shading, and textures•Scan conversion, clipping•Hierarchical scene graphics

•Global illumination•Ray tracing

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Modeling: creating and representing the geometry of objects in the 3D world•Representations of geometry•Curves: splines•Surfaces: meshes, splines

•Procedural modeling•Sweeps•Fractals•Grammars

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Animation: (movement) describing how objects change in time

• Key framing•Kinematics•Articulated figures

• Motion capture• Capture•Warping

• Behaviors•Planning, learning, etc.

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Summary• What is Computer Graphics?• What are the applications of Computer Graphics?

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NEXT SESSION

• Display devices• CRT• Random and Raster scan systems

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