Title :
Modulated lapped transform: application in image coding and effective algorithm of its realization
Author_Institution :
Lviv Polytech. Nat. Univ., Ukraine
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;
Conference_Titel :
Modern Problems of Radio Engineering, Telecommunications and Computer Science, 2002. Proceedings of the International Conference
Print_ISBN :
966-553-234-0
DOI :
10.1109/TCSET.2002.1015946
