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Aliasing

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Definition of the noun Aliasing

What does Aliasing mean as a name of something?

noun - plural: aliasings

  1. [signal processing, graphics, sound recording] Distortion caused by a low sampling rate, as Moire effect or stair-stepped edges.

Music

"Aliasing" is a musical album of Manwe.

  • released on (6 years ago)

Miscellanea

  1. Aliasing: In signal processing and related disciplines, aliasing is an effect that causes different signals to become indistinguishable when sampled. It also refers to the distortion or artifact that results when the signal reconstructed from samples is different from the original continuous signal.
    • also known as 混疊
  2. Aliasing: In computing, aliasing describes a situation in which a data location in memory can be accessed through different symbolic names in the program. Thus, modifying the data through one name implicitly modifies the values associated with all aliased names, which may not be expected by the programmer. As a result, aliasing makes it particularly difficult to understand, analyze and optimize programs. Aliasing analysers intend to make and compute useful information for understanding aliasing in programs.

Printed dictionaries and other books with definitions for Aliasing

Click on a title to look inside that book (if available):

Google previewGeneral and Vascular Ultrasound: Case Review Series E-Book (2015)

by John P. McGahan, Sharlene A Teefey, Laurence Needleman

Color aliasing is an artifact in which the color assigned to a vessel or part of a vessel is incorrect due to too high a velocity for the sampling rate of the color Doppler (Figs. S14-1 and S14-2). This is the most common artifact in color.

Google previewCIW Server Administration Study Guide (2006)

Exam 1D0-450 by James Stanger, Alan Grayson

Aliasing is a renaming practice for accounts on a local host that creates an...

Google previewMRI (2012)

Essentials for Innovative Technologies by Giuseppe Placidi

When overlap occurs, it is impossible to recover the original function because the contribution of some frequencies will be summed to other frequencies: this effect is called aliasing. This will occur also for any function that is not band-limited.

Google previewTime Series Analysis in Meteorology and Climatology (2012)

An Introduction by Claude Duchon, Robert Hale

Aliasing is a direct consequence of digitally sampling an analog signal.

Google previewPractical Algorithms for 3D Computer Graphics, Second Edition (2013)

by R. Stuart Ferguson

Aliasing is a term arising from the theory of sampled signals. The manifestation of aliasing depends on how...

Google previewComprehensive Textbook of Echocardiography (Vols 1 & 2) (2013)

by Navin C Nanda

Aliasing is an erroneous frequency estimation that occurs when the sampling frequency is less than twice the frequency to be...

Similarly, aliasing is a property used in the PISA (proximal isovelocity surface area) method of flow quantification.

Google previewSVG Programming (2008)

The Graphical Web by Kurt Cagle

Aliasing is an artifact of scaling bitmaps—especially when scaling larger.

Google previewFundamentals of Radio Astronomy (2015)

Observational Methods by Jonathan M. Marr, Ronald L. Snell, Stanley E. Kurtz

The sampling process can lead to confusion of the frequency content of the signal with undesired higher frequency components, due to an effect called aliasing. Aliasing is an ambiguity that arises when we sample a continuous signal at ...

Google previewDiagnostic Pediatric Ultrasound (2015)

by Erik Beek, Rick van Rijn

Aliasing is a common artifact in pulsed wave Doppler. It is due to undersampling. The ultrasound echo is sampled at the PRF. According to the Nyquist–Shannon criterion, the PRF must be larger than twice the maximum Doppler.

Google previewIntroductory Guide to Musculoskeletal Ultrasound for the Rheumatologist (2011)

by George Arthur Willem Bruijn, W.A.Kurt Schmidt

Aliasing is a Doppler artifact occurring when velocities of red blood cells are higher than the pulse repetition frequency (PRF). This occurs in areas of stenosis for example, where the reduced lumen of the vessel is seen with a red to blue shift.

Google previewVector Quantization and Signal Compression (1991)

by Allen Gersho, Robert M. Gray

Just as aliasing is a distortion caused by inadequate analog prefiltering, imaging is a distortion ...

Google previewGIMP Bible (2011)

by Jason van Gumster, Robert Shimonski

Antialiasing— Aliasing is an effect that is unique to digital images, readily recognizable as that stair-stepped effect you see along hard edges in an image. Antialiasing is a means of subtly blurring those edges to reduce that stair- stepping, ...

Google previewMathematical Principles for Scientific Computing and Visualization (2008)

by Gerald Farin, Dianne Hansford

Aliasing is a distortion that can occur with sampling and reconstruction. The reconstruction is an alias of the original data. A simple example is the “jaggies” that can occur with a line drawn on the computer. The discretization of a continuous ...

Google previewComputer Science Handbook, Second Edition (2004)

by Allen B. Tucker

Aliasing refers to the presence of unreproducibly high frequencies in the image and the resulting artifacts that arise upon undersampling. Together with defining theoretical limits on the continuous reconstruction of discrete input, sampling ...

Google previewProgramming Languages and Systems (2013)

11th International Symposium, APLAS 2013, Melbourne, VIC, Australia, December 9-11, 2013, Proceedings by Chung-chien Shan

Aliasing is an important feature of OO because it allows sharing of objects between different parts of a program; this is essential for the efficient implementation of important programming idioms, including iterators over collections. However ...

Google previewIntroduction to Vascular Ultrasonography (2012)

by John S. Pellerito, Joseph F. Polak

If the sampling rate is lower than the Nyquist rate, aliasing occurs. Aliasing is a production of artifactual, lower-frequency signals when ...

Google previewThe Adobe Photoshop CS4 Dictionary (2009)

The A to Z Desktop Reference of Photoshop by Philip Andrews

Anti-aliasing,. fonts. Anti-aliasing,. selections. Menu: – Shortcut: – See also: Aliasing Version: 6.0, 7.0,CS...

Google previewThe Visual Dictionary of Photography (2009)

by David Prakel

A Aliasing and Anti-aliasing 24 Digital systems store information about the original image as a code. When a display or printer interprets that code to create an image we are seeing an alias. If the sampling process is not sufficiently good – if it ...

Google previewEncyclopedia of Microcomputers (1994)

Volume 14 - Productivity and Software Maintenance: A Managerial Perspective to Relative Addressing by Allen Kent, James G. Williams

ALIASING: INHERENT PROBLEMS WITH DISCRETE SAMPLING Whenever images are captured or synthesized, ...

Google previewComputer Jargon Dictionary and Thesaurus (2006)

by Eddie Martin

See Also: Aliasing; Anti-Aliasing; Attachment; Avatar; Banner Ad; BitMaP; BMP; Clip Art; Display; Extension; Filename Extension; Format; GIF; Graphical Interchange Format; Graphics; Image Map; Image Processing; Image ...

Google previewEncyclopaedic Dictionary of Information Technology and Systems (1993)

by A.E. Cawkell

ALIASING 1. Interference produced by frequencies outside the pass-band of interest produced by sampling action when converting an analogue into a digital signal. If the sampling frequency is high enough there should be little or no aliasing.

Google previewA Dictionary of Computer Science (2016)

by Andrew Butterfield, Gerard Ekembe Ngondi, Anne Kerr

aliasing A distorting effect caused by *sampling an image at too low a rate. When a signal is undersampled, highfrequency components ...

Google previewDictionary of Pure and Applied Physics (2000)

by Dipak Basu

aliasing If signals are sampled at certain rates during measurements, a well-known phenomenon in ...

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Aliasing

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Scrabble value of A1L1I1A1S1I1N1G2

The value of this 8-letter word is 9 points, but it's not an accepted word in the Official Scrabble Players Dictionary.

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