Design of lossless LOT and its performance evaluation

Author

Komatsu, Kunitoshi ; Sezaki, Kaoru

Author_Institution

Inst. of Ind. Sci., Tokyo Univ., Japan

Volume

6

fYear

2000

fDate

2000

Firstpage

2119

Abstract

In lossless transforms, integer input signals are transformed into integer transform coefficients and losslessly reconstructed. Lossless versions of the discrete cosine transform and wavelet transforms have been proposed. In this paper, we design a lossless version of the lapped orthogonal transform (LOT). The fast LOT is decomposed into block transforms. Then the lossless LOT is obtained by replacing them by the corresponding lossless ladder networks. We investigate two cases of 31-band and 64-band decomposition in which the 4-point and 8-point lossless LOT are used, respectively. We compare them with the conventional lossless methods in terms of lossless and lossy compression efficiency. The proposed methods are found to have good performance

Keywords

data compression; discrete cosine transforms; image coding; image reconstruction; ladder networks; transform coding; block transforms; decomposition; design; discrete cosine transform; image coding; integer input signals; integer transform coefficients; lapped orthogonal transform; lossless LOT; lossless ladder networks; lossless transforms; losslessly reconstructed signals; lossy compression efficiency; performance evaluation; wavelet transforms; Biomedical imaging; Design methodology; Discrete cosine transforms; Discrete wavelet transforms; Filter bank; Finite impulse response filter; Image coding; Image reconstruction; Performance loss; Phase change materials;

fLanguage

English

Publisher

ieee

Conference_Titel

Acoustics, Speech, and Signal Processing, 2000. ICASSP '00. Proceedings. 2000 IEEE International Conference on

Conference_Location

Istanbul

ISSN

1520-6149

Print_ISBN

0-7803-6293-4

Type

conf

DOI

10.1109/ICASSP.2000.859254

Filename

859254