Title :
Integer discrete cosine transform and its fast algorithm
Author :
Cheng, Lizhi ; Xu, Hui ; Luo, Yong
Author_Institution :
Dept. of Math. & Syst. Sci., Nat. Univ. of Defence Technol., Changsha, China
fDate :
1/4/2001 12:00:00 AM
Abstract :
A recursive sparse matrix decomposition for a floating-point discrete cosine transform (DCT) matrix is presented. Based on this matrix decomposition approach, a split-radix DCT algorithm is proposed and a new integer DCT (IntDCT) algorithm that requires only lifting steps and additions is developed
Keywords :
discrete cosine transforms; floating point arithmetic; matrix decomposition; sparse matrices; IntDCT; floating-point discrete cosine transform; integer discrete cosine transform; lifting steps; recursive sparse matrix decomposition; split-radix DCT algorithm;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20010060
