Title :
Block-lifting factorization of M-channel biorthogonal filter banks with an arbitrary McMillan degree
Author :
Suzuki, Taizo ; Ikehara, Masaaki ; Nguyen, Truong Q.
Author_Institution :
Coll. of Eng., Nihon Univ., Fukushima, Japan
Abstract :
A block-lifting factorization of M-channel biorthogonal filter banks (BOFBs) with degree-N building blocks and even/odd M (M ≥ 2) for lossless-to-lossy image coding is introduced in this paper. In the previous work, block-lifting factorization of M-channel BOFBs has been proposed. Since the block-lifting structure does not require the restriction of determinant of each building block, it achieves better coding performance than the conventional methods. However, the factorization is not completed because McMillan degree in each building block is fixed M/2 (M is even). This paper proposes a block-lifting factorization without restrictions for a fixed degree and even block size. Our proposal is validated by several filter designs and their application to lossless-to-lossy image coding.
Keywords :
filtering theory; image coding; matrix decomposition; M-channel biorthogonal filter bank; arbitrary McMillan degree; block-lifting factorization; block-lifting structure; coding performance; filter design; lossless-to-lossy image coding; Bit rate; Discrete wavelet transforms; Image coding; Image reconstruction; Transform coding; Vectors; Biorthogonal filter banks (BOFBs); block-lifting; degree-N building block; lossless-to-lossy image coding;
Conference_Titel :
Image Processing (ICIP), 2011 18th IEEE International Conference on
Conference_Location :
Brussels
Print_ISBN :
978-1-4577-1304-0
Electronic_ISBN :
1522-4880
DOI :
10.1109/ICIP.2011.6116158