What is anisotropic filtering (AF)? - Definition from WhatIs.com

Definition

anisotropic filtering (AF)

Part of the Computing fundamentals glossary:

Anisotropic filtering (AF) is a feature of some video cards that sharpens the details of the fading-away part of a 3D object that recedes into the distance. Think of the text in the titles at the beginning of the Star Wars movies that is presented in large letters and then scrolls back into the distance. As it scrolls off, it becomes fuzzy and hard to read. In a 3D image, you may want a comparable effect to retain the sharpness of an object as it recedes; anisotropic filtering does this. (Isotropic describes objects or image elements with vectors of equal value along different axes, such as squares and cubes. Anisotropic describes objects whose vectors are unequal, such as trapezoids and parallelograms.)

Since anisotropic filtering requires intense processing as image frames are presented to the display, it may affect performance. A user may want to weigh the perceived improvement in visual quality against the effect on performance.

This was last updated in September 2005
Contributor(s): Dave Seeger
Posted by: Margaret Rouse

Related Terms

Definitions

  • cache memory

    - Cache memory, also called CPU memory, is random access memory (RAM) that a computer microprocessor can access more quickly than it can access regular RAM. (SearchStorage.com)

  • service-oriented architecture (SOA)

    - Service oriented architecture (SOA) is a technique that involves the interaction between loosely coupled services that function independently. (SearchSOA.com)

  • agentless

    - Agentless, in computing, refers to operations where no service, daemon or process (AKA an agent) needs to run in the background on the machine the action is being performed on. (WhatIs.com)

Glossaries

  • Computing fundamentals

    - Terms related to computer fundamentals, including computer hardware definitions and words and phrases about software, operating systems, peripherals and troubleshooting.

  • Internet applications

    - This WhatIs.com glossary contains terms related to Internet applications, including definitions about Software as a Service (SaaS) delivery models and words and phrases about web sites, e-commerce ...

Ask a Question About anisotropic filtering (AF)Powered by ITKnowledgeExchange.com

Get answers from your peers on your most technical challenges

Tech TalkComment

Share
Comments

    Results

    Contribute to the conversation

    All fields are required. Comments will appear at the bottom of the article.