On computing the two-dimensional (2-D) type IV discrete cosine transform (2-D DCT-IV)

Authors
Cheng, LZ
Citation
Lz. Cheng, On computing the two-dimensional (2-D) type IV discrete cosine transform (2-D DCT-IV), IEEE SIG PL, 8(8), 2001, pp. 239-241
Citations number
12
Categorie Soggetti
Eletrical & Eletronics Engineeing
Journal title
IEEE SIGNAL PROCESSING LETTERS
ISSN journal
10709908 → ACNP
Volume
8
Issue
8
Year of publication
2001
Pages
239 - 241
Database
ISI
SICI code
1070-9908(200108)8:8<239:OCTT(T>2.0.ZU;2-3
Abstract
A new fast N x M two-dimensional (2-D) type IV discrete cosine transform (2 -D DCT-IV) algorithm is proposed by jointly using the one-dimensional (1-D) polynomial transform (1-D PT) and the N length-M 1-D DCTs. Compared to the known row-column method, the proposed algorithm requires less than one-hal f of number of multiplications and a smaller number of additions.