Introduction computer graphics (p2) (đồ họa máy TÍNH SLIDE)

Computer Aided DesignInteriors Professional Mechanical CAD Architectural CAD Electronics CAD Casual Users Google Sketchup... Lighting SimulationInterior Design Automobile Visualization..

Introduction

Computer Graphics

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Major Applications

• Video games

• Cartoons

• Visual effects

• Animated films

• CAD/CAM

• Simulation

• Medical imaging

• Information visualization

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Games are OK here

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Computer Aided Design

Interiors Professional

Mechanical CAD Architectural CAD Electronics CAD Casual Users

Google Sketchup

Lighting Simulation

Interior Design

Automobile Visualization

Visual effects

Visualization: Science and Medicine

Visible Human Project: University of Hamburg

Virtual Reality

• VR for design and entertainment

• Simulators: Surgical, Flight, Driving, Spacecraft

Graphical User Interfaces (GUIs)

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Following the Pipeline:Transformations

• Much of the work in the pipeline is in converting

object representations from one coordinate system

to another

– World coordinates

– Camera coordinates

– Screen coordinates

• Every change of

coordinates is equivalent

to a matrix transformation

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• Just as a real camera cannot “see” the whole world, the virtual camera can only see part of the world

space

– Objects that are not within this volume are said to be clipped out of the scene

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• If an object is visible in the image, the

appropriate pixels in the frame buffer

must be assigned colors

– Vertices assembled into objects

– Effects of lights and materials must be

determined

– Polygons filled with interior colors/shades

– Must have also determine which objects

are in front (hidden surface removal)

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Global Illumination

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Photo image of the real scene

Non-photorealistic Rendering

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Color space and Filters

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