January 2012
Intermediate to advanced
592 pages
28h 7m
French
Content preview from InDesign CS5.5 et CS5
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2 - La gestion des images
Les types d’images
On distingue deux types d’images : les images pixellisées (bitmap) et les images vectorielles.
Les images pixellisées (bitmap)
Elles sont obtenues par numérisation d’une photo, à partir d’un appareil photo numérique ou par création à l’aide d’un programme de dessin bitmap tel que Photoshop. De telles images sont composées d’une juxtaposition de petits carrés (ou grille de points), chaque point étant appelé pixel. Les pixels de l’image ont une taille fixe définie à la création de l’image ou à la numérisation de la photo ; la taille du pixel détermine la résolution de l’image. Chaque pixel possède une couleur, qui va du noir ou du blanc à une nuance choisie dans un panneau de 16,7 millions de couleurs. ...
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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