Representation of perfect reconstruction octave decomposition filter banks with set of decimators {2,4,4} via tree structure
Bingo Wing‐Kuen Ling, P.K.S. Tam · IEEE Signal Processing Letters · 2003
We prove that a filter bank with set of decimators {2,4,4} achieves perfect reconstruction if and only if it can be represented via a tree structure and each branch of the tree structure achieves perfect reconstruction.