User User name Password  
   
Saturday 11.10.2008 / 02:59 PM
Search:        In English   Suomeksi   På svenska
afterdawn.com > glossary > Discrete Cosine Transform
Show topics
Glossary
Glossary

Discrete Cosine Transform

(synonyms: DCT,IDCT)

Discrete Cosine Transformation, also called DCT, is used to compress digital images by rounding the values used to express 8x8 blocks of Pixels into a smaller number of values that can be grouped together to avoid redundant bits. This type of lossy encoding is used by every lossy video Compression format.

The inverse of the compression function, also known as iDCT (inverse DCT) is used to re-create the original images from those compressed using DCT.

Additional Reading
The Discrete Cosine Transform: Theory and Application

Image Compression Using the Discrete Cosine Transform

User comments
There are currently no user comments for this entry.
Be the first to write one!
 Post your comment
Select a term to see the explanation