Subsampling: Difference between revisions

Revision as of 03:56, 5 March 2007

Latest revision as of 08:41, 16 August 2021

(23 intermediate revisions by 15 users not shown)

Line 1:

{{wiktionary|subsampling}}

In computer graphics, '''subsampling''' is the process of shrinking an image to a smaller size. It is a type of [[image scaling]], usually used to alter the appearance of an image or to reduce the quantity of information required to store an image.

{{distinguish|Undersampling}}

'''Subsampling''' or '''sub-sampling''' may refer to:

==Methods of Subsampling==

* [[Sampling (statistics)]]

* [[Replication (statistics)]]

Two commonly used methods of subsampling are ''replacement'' and ''interpolation''. Replacement selects a single pixel from a group and uses it to represent the entire group. Interpolation uses a statistical sample (such as the mean) to create a new representation of the entire group.

* [[Downsampling]] in signal processing

==See Also==

* [[Resampling]]

* [[Chroma subsampling]]

* [[SamplingSub-sampling (signal processingchemistry)]]

{{dab}}

{{compu-graphics-stub}}