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Overview

anti-aliasing

Taking specific action to remove or subdue aliasing effects. Super-sampling or smoothing the image by filtering are techniques often used to reduce aliasing.

anti-aliasing

anti-aliasing   Quick reference

A Dictionary of the Internet (3 ed.)

Reference type:
Subject Reference
Current Version:
2013

...anti-aliasing The process of processing an image in order to minimize the jagged images found in digital graphics. Most graphic packages contain facilities which enable the user to carry out anti-aliasing. Although it is mainly used for colour images it can also be used for black and white...

anti-aliasing

anti-aliasing   Quick reference

A Dictionary of Media and Communication (2 ed.)

Reference type:
Subject Reference
Current Version:
2016
Subject:
Media studies
Length:
26 words

... In computer graphics, typography , and television, a method of smoothing-out the jagged appearance of diagonal or curved lines by blurring their edges. See also aliasing ....

anti-aliasing

anti-aliasing   Quick reference

A Dictionary of Computer Science (7 ed.)

Reference type:
Subject Reference
Current Version:
2016

... Taking specific action to remove or subdue aliasing effects. Super-sampling or smoothing the image by filtering are techniques often used to reduce...

anti-aliasing filter

anti-aliasing filter   Quick reference

A Dictionary of Electronics and Electrical Engineering (5 ed.)

Reference type:
Subject Reference
Current Version:
2018

... filter A low-pass filter used to ensure that the maximum frequency of an analogue signal input to or output from a digital sampling system does not exceed half the sampling frequency being used, or the Nyquist frequency , in order to avoid aliasing . The cut-off frequency of an anti-aliasing filter is usually set to be just less than the Nyquist frequency. ...

antialiasing

antialiasing n   Reference library

Oxford Business Spanish Dictionary: English-Spanish

Reference type:
Bilingual Dictionary
Current Version:
2003
Subject:
Bilingual dictionaries
Length:
9 words
antialiasing

antialiasing n   Reference library

Oxford Business French Dictionary: English-French

Reference type:
Bilingual Dictionary
Current Version:
2003
Subject:
Bilingual dictionaries
Length:
5 words
antialiasing

antialiasing noun   Quick reference

New Oxford American Dictionary (3 ed.)

Reference type:
English Dictionary
Current Version:
2015
Subject:
English Dictionaries and Thesauri
Length:
50 words
antialiasing

antialiasing noun   Reference library

The Canadian Oxford Dictionary (2 ed.)

Reference type:
English Dictionary
Current Version:
2005
Subject:
English Dictionaries and Thesauri
Length:
28 words
anti-aliasing

anti-aliasing  

Taking specific action to remove or subdue aliasing effects. Super-sampling or smoothing the image by filtering are techniques often used to reduce aliasing.
aliasing

aliasing  

Reference type:
Overview Page
Subject:
Media studies
1. The rendering of curves or diagonal lines in a television or digital image as a series of steps. Aliasing is an artefact of the process of rasterization in television and quantization in digital ...
filtering

filtering  

1 The processing of a signal (by a simple electric circuit or by some more complicated device) in such a way that the behavior of the signal is affected in either the time domain or in a transform ...
A-buffer

A-buffer  

A buffer used with a Z-buffer to hold information concerning the visible transparent surfaces to be considered at eachpixel of an image. The A-buffer originated in an anti-aliasedhidden-surface ...
raster graphics

raster graphics  

Reference type:
Overview Page
Subject:
Media studies
Graphics in which the information about the image is held as a bitmap. Digitized images produced by scanning or digital photography have raster graphics. Compare vector graphics.
aliasing

aliasing  

A phenomenon in which a digitized signal is observed to contain spurious low-frequency components. These occur if the original signal is sampled at a rate insufficient to record the highest ...
aliasing

aliasing   Quick reference

A Dictionary of Computer Science (7 ed.)

Reference type:
Subject Reference
Current Version:
2016

...the alias (or false identity) of the lower frequencies. Some common computer-graphics artefacts due to aliasing are jagged lines, small objects missing from a scene, and jerky motion. Aliasing effects can be removed or subdued by anti-aliasing . Fine detail, such as mesh curtains, can be totally lost or distorted without anti-aliasing. Aliasing effects are even more prominent in animated...

aliasing

aliasing   Quick reference

A Dictionary of Electronics and Electrical Engineering (5 ed.)

Reference type:
Subject Reference
Current Version:
2018

...f( t ′) is retrieved from the sampled information that differs from the original input signal. The retrieved signal – the alias signal – has a frequency that corresponds to the harmonics of the high-frequency components of f( t ). Anti-aliasing is any action taken to reduce or remove aliasing effects. See also anti-aliasing filter . ...

greyscale

greyscale   Reference library

The Oxford Companion to the Book

Reference type:
Subject Reference
Current Version:
2010
Subject:
History, Social sciences
Length:
51 words

...Of pictorial images: made up of *pixels , each of which is black, white, or one of a number of shades of grey defined by the displaying system. Of character images on electronic displays (also ‘antialiased’): with grey pixels placed along sloping edges to avoid a stepped appearance. Richard...

raster graphics

raster graphics   Quick reference

A Dictionary of Media and Communication (2 ed.)

Reference type:
Subject Reference
Current Version:
2016
Subject:
Media studies
Length:
77 words

...a colour value to each square of the grid like a mosaic. The level of detail is determined by the number of squares ( resolution ) and by the number of colours assigned to each square ( colour depth ). The ‘blockiness’ of the overall image may be reduced by employing anti-aliasing techniques. Compare vector graphics ; see also dpi...

aliasing

aliasing   Quick reference

A Dictionary of Media and Communication (2 ed.)

Reference type:
Subject Reference
Current Version:
2016
Subject:
Media studies
Length:
58 words

... 1. An artefact of the process of rasterization in television and quantization in digital media which results in the rendering of curves or diagonal lines as a series of steps; see also anti-aliasing . 2. In digital audio, a characteristic distortion caused by a low sample rate, which is unable to approximate higher frequencies. http://www.earlevel.com/Digital%20Audio/Aliasing.html Digital audio aliasing...

A-buffer

A-buffer   Quick reference

A Dictionary of Computer Science (7 ed.)

Reference type:
Subject Reference
Current Version:
2016

...A buffer used with a Z-buffer to hold information concerning the visible transparent surfaces to be considered at each pixel of an image. The A-buffer originated in an anti-aliasing hidden-surface removal algorithm developed by Loren Carpenter around 1984 . It resolves visibility among an arbitrary collection of opaque, transparent, and intersecting objects. The algorithm was developed for the REYES system at Lucasfilm Ltd. Road to Point Reyes was a famous image produced by the...

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