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aliasing
(redirected from Spatial aliasing)

    Also found in: Medical, Wikipedia, Hutchinson 0.02 sec.

In computer graphics, the stair-stepped appearance of diagonal lines when there are not enough pixels in the image or on screen to represent them realistically. Also called "stair-stepping" and "jaggies." See anti-aliasing.

Low and High Resolutions
A low-resolution image showing the stair-stepping is on the left. The higher-resolution version is on the right.

1.(jargon)aliasing - When several different identifiers refer to the same object. The term is very general and is used in many contexts.

See alias, aliasing bug, anti-aliasing.
2.(hardware)aliasing - (Or "shadowing") Where a hardware device responds at multiple addresses because it only decodes a subset of the address lines, so different values on the other lines are ignored.
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