# COMPUTER GRAPHICS AND LINEAR ALGEBRA - PowerPoint PPT Presentation

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COMPUTER GRAPHICS AND LINEAR ALGEBRA. AN INTRODUCTION. 1. Representing image on computer. Points on Screen == Co -ordinate vectors. Example {0, 0}, {1, 1}, {2, 2}, {3, 3}, , {4, 2}, {5, 1}, {6, 0}. Picture with points joined together. 1. Moving the images. Moving a point

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COMPUTER GRAPHICS AND LINEAR ALGEBRA

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## COMPUTER GRAPHICS AND LINEAR ALGEBRA

AN INTRODUCTION

### 1. Representing image on computer

Points on Screen

== Co-ordinate vectors

### 1. Moving the images

Moving a point

== Transforming Co-ordinate vector

== Multiplication by matrices

### Transformation of co-ordinate vectors

• Original: {0, 0}, {1, 1}, {2, 2}, {3, 3}, , {4, 2}, {5, 1}, {6, 0}

• Multiply each x-co-ordinate by 2, keeping y the same

• New: {0, 0}, {2, 1}, {4, 2}, {6, 3}, {8, 2}, {10, 1}, {12, 0}

### Going from lines and points to moving images

• POLYGONAL MESH

• MOTION CAPTURE