aliasing
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 |
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| A low-resolution image showing the stair-stepping is on the left. The higher-resolution version is on the right. |
aliasing [′āl·yəs·iŋ]
(computer science)
In computer graphics, the jagged appearance of diagonal lines on printouts and on video monitors.
(mathematics)
Introduction of error into the computed amplitudes of the lower frequencies in a Fourier analysis of a function carried out using discrete time samplings whose interval does not allow the proper analysis of the higher frequencies present in the analyzed function.
| 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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