1. Computing & Technology
Aliasing in a Bitmap Image

Example of Aliasing in a Bitmap Image; © J. Bear | Graphics Glossary | Typography Glossary | Alpha Index to Full Glossary:

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Definition: The jagged edges on curves and diagonal lines in a bitmap image are known as aliasing. Because bitmap images are made up of square pixels on a grid, a curve or a diagonal line has stair-stepped pixels. Enlarging a bitmap image accentuates the effect or appearance of aliasing.

Aliasing can be minimized with a smoothing process called anti-aliasing which adds additional pixels to make the edges appear less jagged.

Also Known As: jaggies | jagged edges
Examples:
In the photo, the inset shows original bitmap image. Enlarged image shows aliasing or jaggies along curved lines.
Terms Related to Aliasing

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