Title :
Further results on DCT-based linear phase paraunitary filter banks
Author :
Liang, Jie ; Tran, Trac D.
Author_Institution :
Dept. of Electr. & Comput. Eng., Johns Hopkins Univ., Baltimore, MD, USA
Abstract :
A DCT-based simplified general structure for a linear phase paraunitary filter bank (LPPUFB) was developed by the pre- and post-processing of the DCT in the time domain. The new structure can be viewed as the dual of the generalized LOT (GenLOT). We generalize the result to odd-channel LPPUFB and LPPUFB with pair-wise mirror image property. Design examples and their application in image compression are presented.
Keywords :
channel bank filters; data compression; digital filters; discrete cosine transforms; image coding; linear phase filters; network synthesis; transform coding; DCT-based linear phase paraunitary filter banks; GenLOT; generalized LOT; image compression; odd-channel LPPUFB; pair-wise mirror image property; post-processing; pre-processing; time domain; Channel bank filters; Delay; Discrete cosine transforms; Electronic mail; Filter bank; Image coding; Lattices; Mirrors; Optimization methods; Time domain analysis;
Conference_Titel :
Image Processing. 2002. Proceedings. 2002 International Conference on
Print_ISBN :
0-7803-7622-6
DOI :
10.1109/ICIP.2002.1040042
