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Mathematical Optimization in Graphics and Vision - Luiz Velho - Impa

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Chapter 1<br />

Computer <strong>Graphics</strong><br />

1.1 What is computer graphics?<br />

The usual def<strong>in</strong>ition for computer graphics is the follow<strong>in</strong>g: a set of models, methods<br />

<strong>and</strong> techniques to transform data <strong>in</strong>to images that are displayed <strong>in</strong> a graphics<br />

device. The attempt to def<strong>in</strong>e an area is a difficult, if not impossible, task. Instead<br />

of try<strong>in</strong>g to devise a good def<strong>in</strong>ition, perhaps the best way to underst<strong>and</strong> an area is<br />

through a deep knowledge of its problems <strong>and</strong> the methods to solve them. From<br />

this po<strong>in</strong>t of view, the def<strong>in</strong>ition above has the virtue of emphasiz<strong>in</strong>g a fundamental<br />

problem of computer graphics, that is: the transformation of data <strong>in</strong>to images.<br />

(Figure 1.1).<br />

Figure 1.1: Computer graphics: transform<strong>in</strong>g data <strong>in</strong>to images.<br />

In applied mathematics, the solution of problems is directly related with the<br />

mathematical models used to underst<strong>and</strong> <strong>and</strong> pose the problem. For this reason,<br />

1

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