Corel PaintShop Pro X7, DE User's Guide download pdf (Page 74)

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70 Corel PaintShop Pro X7 User Guide

understand the differences between these two data types before you

begin working with them.

Raster graphics

Raster images are composed of individual elements, called pixels,

which are arranged in a grid. Each pixel has a specific location and

color. If you magnify raster data, you can see the individual pixels as

squares of colors. Raster images contain a fixed number of pixels, so

when you magnify the image you are magnifying the display size of the

pixels. As a result, raster images may display jagged rather than

smooth edges when magnified on screen or when printed at a large

magnification.

An object in a raster image is defined by its pixels. For example, the

front door in an image of a house is made up of a mosaic of pixels at

certain locations in the image. In bitmap images, you edit pixels rather

than objects or shapes.

Raster images can display subtle changes in tones and colors, so they

are most often used for images like photographs and digital artwork.

Vector graphics

Vector graphics use geometric characteristics — lines, curves, and their

locations — to define objects. For example, a door in a graphic of a

house is made up of a rectangle that has a certain width and height,

is placed at a specific location, and is filled with a certain color. In

vector images, you edit objects or shapes rather than pixels.

Vector graphics do not lose clarity or detail when they are scaled or

printed, regardless of the change in size or resolution. For this reason,

vector graphics are suited to technical illustrations or corporate logos.

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Corel PaintShop Pro X7, DE User's Guide Page 74

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