Noise Filtering Using Edge-Driven Adaptive Anisotropic Diffusion

Author

Gallea, Roberto ; Ardizzone, Edoardo ; Pirrone, Roberto ; Gambino, Orazio

Author_Institution

DINFO-Dipt. di Ing. Inf., Univ. degli studi di Palermo, Palermo

fYear

2008

fDate

17-19 June 2008

Firstpage

29

Lastpage

34

Abstract

This paper presents a method aimed to noise removal in MRI (magnetic resonance imaging). We propose an improvement of Perona and Malik´s anisotropic diffusion filter. In our schema, the diffusion equation of the filter has been modified to take into account the edges direction. This allows the filter to blur uniform areas, while it better preserves the edges. Both quantitative and qualitative evaluation is presented and the results are compared with other methods.

Keywords

filtering theory; image denoising; magnetic resonance imaging; diffusion equation; edge-driven adaptive anisotropic diffusion; magnetic resonance imaging; noise filtering; noise removal; Adaptive filters; Anisotropic magnetoresistance; Costs; Equations; Filtering; Magnetic fields; Magnetic noise; Magnetic resonance imaging; Magnetic separation; Superconducting device noise; Anisotropic Diffusion; Brain MRI; Magnetic Resonance Images; Noise Removal;

fLanguage

English

Publisher

ieee

Conference_Titel

Computer-Based Medical Systems, 2008. CBMS '08. 21st IEEE International Symposium on

Conference_Location

Jyvaskyla

ISSN

1063-7125

Print_ISBN

978-0-7695-3165-6

Type

conf

DOI

10.1109/CBMS.2008.31

Filename

4561949