Modulated lapped transform: application in image coding and effective algorithm of its realization

Author

Lashko, Oksana

Author_Institution

Lviv Polytech. Nat. Univ., Ukraine

fYear

2002

fDate

2002

Firstpage

243

Lastpage

244

Abstract

The results of comparative analysis of a modulated lapped transform algorithm for the JPEG standard are presented. It is shown that the algorithm application results in improvement of the quality characteristics of the reconstructed signal while preserving compression rate. An algorithm for the modulated lapped transform is proposed, which enables us to increase the exactness of data coding signal reconstruction based on the spectral transform. Results of the comparative analysis of two algorithms are presented: the modulated lapped transform algorithm and a fast algorithm for the discrete cosine transform of one- and two-dimensional signals.

Keywords

code standards; data compression; discrete cosine transforms; image coding; signal reconstruction; transform coding; JPEG standard; compression rate; data coding; discrete cosine transform; discrete sine transform; image coding; modulated lapped transform; one-dimensional signals; reconstructed signal quality; signal reconstruction; spectral transform; transform coding; two-dimensional signals; Algorithm design and analysis; Discrete cosine transforms; Discrete transforms; Image analysis; Image coding; Image reconstruction; Modulation coding; PSNR; Signal reconstruction; Transform coding;

fLanguage

English

Publisher

ieee

Conference_Titel

Modern Problems of Radio Engineering, Telecommunications and Computer Science, 2002. Proceedings of the International Conference

Print_ISBN

966-553-234-0

Type

conf

DOI

10.1109/TCSET.2002.1015946

Filename

1015946