DocumentCode
1432536
Title
Downsampling versus folding in the DCT domain
Author
Prost, Rémy ; Diab, Chaouki
Author_Institution
Inst. Nat. de la Sante et de la Recherche Med., Lyon, France
Volume
44
Issue
11
fYear
1996
fDate
11/1/1996 12:00:00 AM
Firstpage
2887
Lastpage
2891
Abstract
Signals can be split into subbands using ideal bandpass filters in the discrete cosine transform (DCT) domain. We show that decimation by band folding is not equivalent to downsampling but results in two convolution operations that involve both the odd and even samples of the signal
Keywords
band-pass filters; convolution; digital filters; discrete cosine transforms; signal sampling; DCT domain; band folding; convolution operations; decimation; discrete cosine transform; downsampling; folding; ideal bandpass filters; samples; subbands; Convolution; Discrete Fourier transforms; Discrete cosine transforms; Filter bank; Filtering; Finite impulse response filter; Image coding; Image reconstruction; Signal processing; Signal resolution;
fLanguage
English
Journal_Title
Signal Processing, IEEE Transactions on
Publisher
ieee
ISSN
1053-587X
Type
jour
DOI
10.1109/78.542449
Filename
542449
Link To Document