IDCT
Noun
Meaning
IDCT (plural IDCTs)
(mathematics) Initialism of inverse discrete cosine transform.
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Examples
The most common variant of discrete cosine transform is the type-II DCT, which is often called simply "the DCT". citation citation Its inverse, the type-III DCT, is correspondingly often called simply "the inverse DCT" or "the IDCT".
The minimum allowed accuracy of a decoder IDCT approximation is defined by ISO/IEC 23002-1.