Title :
Variable block size lapped transforms
Author :
De Queiroz, Ricardo L. ; Rao, K.R.
Author_Institution :
Xerox Webster Res. Center, NY, USA
Abstract :
A structure for implementing lapped transforms with time-varying block sizes is discussed. It allows full orthogonality in the transitions based on a factorization of the transfer matrix into orthogonal factors. Such an approach can be viewed as a sequence of stages with variable-block-size transforms intermediated by sample-shuffling (delay) stages. Details for a first order system are given and a design example is presented
Keywords :
band-pass filters; image coding; transfer function matrices; transform coding; delay; design example; factorization; filter banks; first order system; full orthogonality; image coding; orthogonal factors; sample-shuffling stages; time-varying block sizes; transfer matrix; transform coding; variable block size lapped transforms; Bismuth; Channel bank filters; Delay; Filter bank; Finite impulse response filter; Polynomials; Signal resolution; Symmetric matrices; Time frequency analysis; Transform coding;
Conference_Titel :
Image Processing, 1995. Proceedings., International Conference on
Conference_Location :
Washington, DC
Print_ISBN :
0-8186-7310-9
DOI :
10.1109/ICIP.1995.529703
