Title :
A real-valued block filter bank with perfect-reconstruction property
Author_Institution :
Kanazawa Inst. of Technol., Ishikawa, Japan
fDate :
6/23/1905 12:00:00 AM
Abstract :
This paper discusses the perfect reconstruction (PR) condition of a maximally decimated block filter bank, which uses cyclic convolutions instead of linear convolutions used in the usual filter banks. This type of filter bank is particularly useful for subband coding for image data. It is observed that the PR condition of the block filter bank is less restrictive than that of the usual FIR filter banks. The PR condition is expressed in terms of DFT of the analysis filters for convenience of the filter design
Keywords :
channel bank filters; convolution; digital filters; discrete Fourier transforms; image coding; image reconstruction; DFT; cyclic convolutions; filter design; image data; maximally decimated filter bank; perfect reconstruction; real-valued block filter bank; subband coding; Discrete Fourier transforms; Discrete transforms; Equations; Filter bank; Matrices; Matrix decomposition; Polynomials; Signal analysis; Signal synthesis; Sufficient conditions;
Conference_Titel :
Image Processing, 2001. Proceedings. 2001 International Conference on
Conference_Location :
Thessaloniki
Print_ISBN :
0-7803-6725-1
DOI :
10.1109/ICIP.2001.958082
