DCT compression

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'''DCT compression''' (Discrete cosine transform) is a compression technique used for images and audio. It is used in [[JPEG]] and [[MP3]], where it provides lossy compression (meaning that some detail is lost).
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'''DCT compression''' (Discrete cosine transform) is a compression technique used for images and audio. It is used in [[JPEG]] and (in a modified form) [[MP3]], where it provides lossy compression (meaning that some detail is lost).
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The audio format known as [[DCT]] is, however, not related; that abbreviation comes from "dictation". That format can use a variety of codecs including MP3, meaning that it might or might not happen to use the compression technique with the same initials.
  
 
== Links ==
 
== Links ==
 
* [[Wikipedia:Discrete cosine transform|Wikipedia article: Discrete cosine transform]]
 
* [[Wikipedia:Discrete cosine transform|Wikipedia article: Discrete cosine transform]]
* [http://vision.arc.nasa.gov/publications/mathjournal94.pdf Image Compression Using the Discrete
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* [http://vision.arc.nasa.gov/publications/mathjournal94.pdf Image Compression Using the Discrete Cosine Transform (NASA)]
Cosine Transform (NASA)]
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* [http://www.lokminglui.com/dct.pdf Image Compression and the Discrete Cosine Transform]
 
* [http://www.lokminglui.com/dct.pdf Image Compression and the Discrete Cosine Transform]
 
* [http://www-cs-faculty.stanford.edu/~eroberts/courses/soco/projects/data-compression/lossy/jpeg/dct.htm Description of DCT as used in JPEG]
 
* [http://www-cs-faculty.stanford.edu/~eroberts/courses/soco/projects/data-compression/lossy/jpeg/dct.htm Description of DCT as used in JPEG]
  
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[[Category:Graphics]]
 
[[Category:Audio and Music]]
 
[[Category:Audio and Music]]
[[Category:Compression]]
 

Latest revision as of 19:11, 11 November 2015

File Format
Name DCT compression
Ontology

DCT compression (Discrete cosine transform) is a compression technique used for images and audio. It is used in JPEG and (in a modified form) MP3, where it provides lossy compression (meaning that some detail is lost).

The audio format known as DCT is, however, not related; that abbreviation comes from "dictation". That format can use a variety of codecs including MP3, meaning that it might or might not happen to use the compression technique with the same initials.

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