Title :
Generalised lapped orthogonal transforms
Author :
de Queiroz, R.L. ; Nguyen, Truong Q. ; Rao, K. Raghava
Author_Institution :
Dept. of Electr. Eng., Texas Univ., Arlington, TX, USA
fDate :
1/20/1994 12:00:00 AM
Abstract :
A class of linear-phase paraunitary filter banks is developed, possessing fast implementation algorithms based on the discrete cosine transform. In this formulation, the lapped orthogonal transform is a particular case which was extended to accommodate the overlap of any number of blocks. Optimised design examples are presented.
Keywords :
discrete cosine transforms; filtering and prediction theory; frequency response; image coding; GENLOT; discrete cosine transform; fast implementation algorithms; filter frequency response; image compression; lapped orthogonal transform; linear-phase paraunitary filter banks; optimised design examples; transform coding gain;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19940078
