Title :
Method for realising reversible integer type-IV discrete cosine transform
Author :
Huang, H. ; Yu, R. ; Lin, X. ; Rahardja, S.
Author_Institution :
Inst. for Infocomm Res., Agency for Sci., Singapore
fDate :
4/15/2004 12:00:00 AM
Abstract :
A novel method for realising reversible integer discrete cosine transform type IV (DCT-IV) is presented. The method is derived by first constructing a transform matrix using DCT-IV matrix, then factorising the transform matrix into the product of three lifting matrices. The proposed method exhibits low rounding number and is the most accurate to the floating-point DCT-IV transform.
Keywords :
audio coding; discrete cosine transforms; floating point arithmetic; matrix decomposition; audio coding; floating point DCT-4 transform; reversible integer discrete cosine transform; transform matrix factorisation; type-4 discrete cosine transform;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20040315
