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Last modified: Friday, January 17, 2003 

(1) A program that accepts a certain type of data as input, transforms it in some manner, and then outputs the transformed data. For example, a program that sorts names is a filter because it accepts the names in unsorted order, sorts them, and then outputs the sorted names.

Utilities that allow you to import or export data are also sometimes called filters.

(2) A pattern through which data is passed. Only data that matches the pattern is allowed to pass through the filter.

(3) In paint programs and image editors, a filter is an effect that can be applied to a bit map. Some filters mimic conventional photographic filters, but many transform images in unusual ways. A pointillism filter, for example, can make a digitized photograph look like a pointillistic painting.

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For pages about filter . Also check out the following links!

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Air Logic: Filters - The Air Logic Division of Fred Knapp Engraving Company, which designs and manufactures a comprehensive line of pneumatic and vacuum control equipment.

Newark InOne: Filters - View our online selection of filters. Chat online with product tech support and place your order online 24x7.

Ocean Optics: Filters - Supplies a broad range of optical sensing technologies, including filters.

related categories

Graphics Software


related terms

application gateway


image editor

image enhancement


packet filtering

photo illustration

stateful inspection

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