Parameters and filters for low bit rate wavelet packet compression of magnetic resonance images

Author

Azpiroz-Leehan, J. ; Lerallut, J.-F.

Author_Institution

Dept. Electr. Eng., Univ. Metropolitana Iztapalapa, Purisima Y Michoacan, Mexico

Volume

3

fYear

2001

fDate

2001

Firstpage

2457

Abstract

We present an analysis of the characteristics of different filters for the compression of magnetic resonance images. Compression rates were 33:1 and 50:1. We compare the performance among different types of wavelets presented in the literature and provide quantitative (percentage of energy retained, peak signal to noise ratio) and qualitative (analysis by a group of seven experts) data to support our conclusions. Different types of coiflets, symlets and biorthogonal wavelets are analyzed, and we conclude that for the images under study (T1 weighed images in three planes), the best results are provided by the biorthogonal spline (Daubechies) wavelet 2,6. Several explanations for these results are mentioned.

Keywords

biomedical MRI; data compression; medical image processing; splines (mathematics); wavelet transforms; Daubechies wavelet; T1 weighed images; biorthogonal wavelets; coiflets; digital imaging; energy retained percentage; image compression; low bit rate wavelet packet compression; magnetic resonance images; medical diagnostic imaging; symlets; Bit rate; Filters; Image analysis; Image coding; Magnetic analysis; Magnetic resonance; Magnetic separation; PSNR; Wavelet analysis; Wavelet packets;

fLanguage

English

Publisher

ieee

Conference_Titel

Engineering in Medicine and Biology Society, 2001. Proceedings of the 23rd Annual International Conference of the IEEE

ISSN

1094-687X

Print_ISBN

0-7803-7211-5

Type

conf

DOI

10.1109/IEMBS.2001.1017275

Filename

1017275