A DIRECT COMPUTATION OF DCT COEFFICIENTS FOR A SIGNAL BLOCK TAKEN FROM 2 ADJACENT BLOCKS

被引：24

作者：

KOU, WD

FJALLBRANT, T

机构：

[1] NCR Canada Ltd., Waterloo, Ont

[2] Department of Electrical Engineering, University of Linköping, Linköping

来源：

IEEE TRANSACTIONS ON SIGNAL PROCESSING | 1991年 / 39卷 / 07期

关键词：

D O I：

10.1109/78.134412

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A direct computational algorithm for obtaining the DCT coefficients of a signal block taken from two adjacent blocks is proposed. This algorithm reduces the number of both multiplications and additions/subtractions compared to the traditional method, which requires inverse transforms of two received coefficient blocks followed by a forward transform.

引用

页码：1692 / 1695

页数：4

共 8 条

[1]

Elliott DF., 1982, FAST TRANSFORMS

[2]

FJALLBRANT T, 1985, P IEEE ISCAS85, P321

[3]

KOU W, 1990, IEEE T COMMUN

[4]

KOU W, 1988, P IEEE ISCAS88

[5]

KOU WD, 1985, ELECTRON LETT, V21, P666, DOI 10.1049/el:19850471

[6] FAST COMPUTATION OF TRANSFORM COEFFICIENTS FOR A SUBADJACENT BLOCK FOR A TRANSFORM FAMILY [J].

KOU, WD ;

FJALLBRANT, T .

IEEE TRANSACTIONS ON SIGNAL PROCESSING, 1991, 39 (07) :1695-1699

[7]

Kou Wei-dong, 1986, Acta Electronica Sinica, V14, P95

[8]

RAO KR, 1985, DISCRETE TRANSFORMS

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