Title :
Fast implementation of a general L/M rate changer by a filter bank structure
Author :
Ling, Wing-Kuen ; Tam, P.K.S.
Author_Institution :
Dept. of Electron. & Inf. Eng., Hong Kong Polytech. Univ., Kowloon, China
Abstract :
We show that an L/M rate changer can be realized as a discrete time SISO (L,M) shift invariant system in the form of a two-dimensional kernel function or a filter bank structure. Based on this realization, we can implement an L/M rate changer by a bank of filters with the average number of coefficients in the filters in each channel is 1/L of the original L/M rate changer. Hence, the system is speeded up by L. This helps the designer to design sharp cutoff discrete time FIR filters in an L/M rate changer for real time applications in video systems
Keywords :
FIR filters; discrete time filters; video signal processing; 2D kernel function; L/M rate changer; discrete time SISO (LM) shift invariant system; filter bank structure; real time applications; sharp cutoff discrete time FIR filters; video systems; Channel bank filters; Digital images; Filter bank; Finite impulse response filter; Intelligent structures; Kernel; Multimedia systems; Nonlinear filters; Parallel processing; Real time systems;
Conference_Titel :
Intelligent Multimedia, Video and Speech Processing, 2001. Proceedings of 2001 International Symposium on
Conference_Location :
Hong Kong
Print_ISBN :
962-85766-2-3
DOI :
10.1109/ISIMP.2001.925377
