TY - GEN
T1 - A design of cyclic filter banks
AU - Itami, F.
AU - Watanabe, E.
AU - Nishihara, A.
PY - 2002/1/1
Y1 - 2002/1/1
N2 - Cyclic filter banks are appropriate for processing finite-length signals such as images since cyclic convolutions are used to process them. So far, it has been shown that the two channel linear phase orthogonal filter banks, which can not be realized as non-cyclic LTI systems, can be realized as cyclic LTI systems. This paper proposes a design of the cyclic filter banks with DFT modulations. First, we show the polyphase representations and perfect reconstruction conditions. Next, we discuss the advantages of the proposed structure by studying the essential property of the cyclic LTI systems. Finally, we give a design example of the proposed filter banks, and show the reconstructed images processed by the proposed filter banks.
AB - Cyclic filter banks are appropriate for processing finite-length signals such as images since cyclic convolutions are used to process them. So far, it has been shown that the two channel linear phase orthogonal filter banks, which can not be realized as non-cyclic LTI systems, can be realized as cyclic LTI systems. This paper proposes a design of the cyclic filter banks with DFT modulations. First, we show the polyphase representations and perfect reconstruction conditions. Next, we discuss the advantages of the proposed structure by studying the essential property of the cyclic LTI systems. Finally, we give a design example of the proposed filter banks, and show the reconstructed images processed by the proposed filter banks.
KW - Appropriate technology
KW - Channel bank filters
KW - Educational technology
KW - Equations
KW - Filter bank
KW - Image reconstruction
KW - Matrices
KW - Prototypes
KW - Signal processing
KW - Systems engineering and theory
UR - http://www.scopus.com/inward/record.url?scp=84871370174&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84871370174&partnerID=8YFLogxK
U2 - 10.1109/APCCAS.2002.1114909
DO - 10.1109/APCCAS.2002.1114909
M3 - Conference contribution
AN - SCOPUS:84871370174
T3 - IEEE Asia-Pacific Conference on Circuits and Systems, Proceedings, APCCAS
SP - 65
EP - 68
BT - Proceedings - APCCAS 2002
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - Asia-Pacific Conference on Circuits and Systems, APCCAS 2002
Y2 - 28 October 2002 through 31 October 2002
ER -