Image coding using Periodic Walsh Piecewise-Linear transform

Author

Belgassem, Fituri H.

Author_Institution

Commun. Eng. Dept., Higher Inst. of Electron., Beni Walid, Libya

fYear

2009

fDate

2-4 April 2009

Firstpage

227

Lastpage

230

Abstract

The analysis of image coding using Periodic Walsh Piecewise-Linear (PWL) transform will be presented in this paper. The coding method employs an integer bit allocation scheme and Llyod-Max quantizers. Experimental results have shown that best results are obtained by modeling the DC coefficient using a one-sided Gaussian distribution and the AC coefficients by using a Laplacian distribution. Comparison of coding real images using the periodic Walsh piecewise-linear transform and some orthogonal transforms will be given. Computer simulation results indicate that the image coding efficiency of the periodic Walsh piecewise-linear transform is close to that of Walsh and Haar transforms from the PSNR viewpoint.

Keywords

Gaussian distribution; Laplace transforms; Walsh functions; data compression; frequency allocation; image coding; piecewise linear techniques; transform coding; Gaussian distribution; Laplacian distribution; Llyod-Max quantizers; image coding; integer bit allocation scheme; periodic Walsh piecewise-linear transform; periodic coding; Bit rate; Compaction; Data compression; Image coding; Image processing; Image storage; PSNR; Piecewise linear techniques; Pixel; Transform coding; Digital image processing; image coding; transform coding;

fLanguage

English

Publisher

ieee

Conference_Titel

Multimedia Computing and Systems, 2009. ICMCS '09. International Conference on

Conference_Location

Ouarzazate

Print_ISBN

978-1-4244-3756-6

Electronic_ISBN

978-1-4244-3757-3

Type

conf

DOI

10.1109/MMCS.2009.5256699

Filename

5256699