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.
