6533b7d0fe1ef96bd125b7ca

RESEARCH PRODUCT

Homomorphic Approach to RF-Inhomogeneity Removal Based on Gabor Filter

Edoardo ArdizzoneRoberto PirroneCamillo Gioe'Orazio Gambino

subject

Settore ING-INF/05 - Sistemi Di Elaborazione Delle InformazioniBrightnessArtifact (error)medicine.diagnostic_testbusiness.industryComputer scienceProcess (computing)Homomorphic encryptionBias artifactGabor filterMagnetic resonance imagingMagnetic fieldIntensity correctionRF inhomogeneityGabor filtermedicineComputer visionArtificial intelligencebusinessImage restorationIllumination correction

description

In this paper a bias correction algorithm for magnetic resonance imaging (MRI) is presented. The magnetic resonance (MR) images affected by this artifact, also called RF-inhomogeneity, exhibit irregular spatial brightness variations caused by magnetic field inhomogeneity. Here we present an original algorithm based on E2D - HUM, already proposed by some of the authors, where a modified Gabor filter is introduced in the elaboration chain to provide directional capabilities to suppress the artifact. The process of restoration doesn't care about the structure of the image and it has been applied to MR images of different parts of body like knee, abdomen, pelvis and brain. A comparison with other algorithms able to remove bias has been made.

yearjournalcountryeditionlanguage
2007-01-01
10.1109/eurcon.2007.4400518http://hdl.handle.net/10447/15477