DocumentCode
1136403
Title
A direct computation of DCT coefficients for a signal block taken from two adjacent blocks
Author
Kou, Weidong ; Fjällbrant, Tore
Author_Institution
NCR Canada Ltd., Waterloo, Ont., Canada
Volume
39
Issue
7
fYear
1991
fDate
7/1/1991 12:00:00 AM
Firstpage
1692
Lastpage
1695
Abstract
A direct computational algorithm for obtaining the DCT (discrete cosine transform) 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. The proposed algorithm is efficient and useful for speech coding and image processing, especially for real-time applications
Keywords
signal processing; transforms; DCT coefficients; adjacent blocks; direct computational algorithm; discrete cosine transform; image processing; real-time applications; signal block; signal processing; speech coding; Circuit noise; Discrete cosine transforms; Discrete transforms; Eigenvalues and eigenfunctions; Karhunen-Loeve transforms; Polynomials; Signal processing algorithms; Speech coding; Speech processing; Transform coding;
fLanguage
English
Journal_Title
Signal Processing, IEEE Transactions on
Publisher
ieee
ISSN
1053-587X
Type
jour
DOI
10.1109/78.134412
Filename
134412
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