Working With Bitmaps

Bitmaps are graphics composed of dots called pixels. Bitmaps have a fixed resolution and look best when you display or print them at their original size. Enlarging the bitmap appears to enlarge each pixel because extra pixels are added, making the graphic look jagged and distorted. Reducing the size of the bitmap eliminates pixels and shrinks the bitmap.

Vectors are defined mathematically as a series of points joined by lines. Unlike bitmaps, vectors represent shapes as a series of lines and curves that you can resize without loss of quality. Graphical elements in a vector file are called objects. Each object is a self-contained entity with properties such as color, shape, outline, and size included in its definition. For more information about vectors, see "CorelDRAW Concepts" on page 6.

Because a bitmap is a collection of arranged pixels, you cannot manipulate its parts individually. The color and shape appear continuous when viewed from a distance. However, CorelDRAW lets you manipulate bitmaps in different ways. You can crop bitmaps to decrease the visible area and reduce the size of files by linking bitmaps to your drawings. You can also trace bitmap images, which converts them to vector images that are easier to manipulate.

CorelDRAW also lets you change an image by manipulating colors and tones, and by resampling. For example, you can hide or show bitmap colors, adjust image tone, or resample to change image size or resolution. You can inflate a bitmap to make an effect cover the entire image. You can convert an image from vectors to bitmaps, or from one color mode to another.

CorelDRAW provides special effects that you can apply to images. For example, you can create three-dimensional images, mimic artistic styles, blur or clear your images, and manipulate image colors, contours, noise, distortions, and sharpness. For more information on applying special effects to bitmaps, see "Applying special effects to bitmaps" on page 584.

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