Anti-aliasing may refer to any of a number of techniques to combat the problems of
aliasing in a
sampled signal such as a
digital image
A digital image is an image composed of picture elements, also known as ''pixels'', each with ''finite'', '' discrete quantities'' of numeric representation for its intensity or gray level that is an output from its two-dimensional functions ...
or
digital audio
Digital audio is a representation of sound recorded in, or converted into, digital form. In digital audio, the sound wave of the audio signal is typically encoded as numerical samples in a continuous sequence. For example, in CD audio, sa ...
recording.
Specific topics in anti-aliasing include:
*
Anti-aliasing filter, a filter used before a signal sampler, to restrict the bandwidth of a signal such as in audio applications
*
Manual anti aliasing, artistic technique done in
pixel art graphics to smooth transitions between shapes, to soften lines or to blur edges.
*
Spatial anti-aliasing, the technique of minimizing aliasing when representing a high-resolution image at a lower resolution
**
Fast approximate anti-aliasing, an anti-aliasing algorithm created by Timothy Lottes under Nvidia. May also be referred to as Fast Sample Anti-aliasing (FSAA).
**
Multisample anti-aliasing, a type of spatial anti-aliasing method
**
Supersampling, a type of spatial anti-aliasing method
*
Temporal anti-aliasing, techniques to reduce or remove the effects of temporal aliasing in moving images
**
Deep learning anti-aliasing, a type of spatial and temporal anti-aliasing method relying on dedicated tensor core processors
See also
*
Aliasing
*
Pixel-art scaling algorithms
*
Nyquist–Shannon sampling theorem
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