Title :
On factorization of a subclass of 2-D digital FIR lossless matrices for 2-D QMF bank applications
Author :
Liu, V.C. ; Vaidyanathan, P.P.
Author_Institution :
Dept of Electr. Eng., California Inst. of Technol., Pasadena, CA, USA
fDate :
6/1/1990 12:00:00 AM
Abstract :
The role of one-dimensional (1-D) digital finite impulse response (FIR) lossless matrices in the design of FIR perfect reconstruction quadrature mirror filter (QMF) banks has been explored previously. Structures which can realize the complete family of FIR lossless transfer matrices, have also been developed, with QMF application in mind. For the case of 2-D QMF banks, the same concept of lossless polyphase matrix has been used to obtain perfect reconstruction. However, the problem of finding a structure to cover all 2-D FIR lossless matrices of a given degree has not been solved. Progress in this direction is reported. A structure which completely covers a well-defined subclass of 2-D digital FIR lossless matrices is obtained
Keywords :
digital filters; matrix algebra; network synthesis; signal processing; 2-D QMF bank; 2-D digital FIR lossless matrices; factorization; lossless polyphase matrix; quadrature mirror filter; transfer matrices; Attenuation; Circuits and systems; Delay; Digital filters; Finite impulse response filter; Image coding; Image reconstruction; Passband;
Journal_Title :
Circuits and Systems, IEEE Transactions on
