Confidence-based anisotropic filtering of magnetic resonance images.

Confidence-based anisotropic filtering of magnetic resonance images.

Wiener filter restoration, followed by a difference operator, is used to estimate the standard deviation of the noise based on the additive noise assumption. Simulation studies show that a 5 /spl times/ 5 Wiener filter gives an estimate of noise within a 5% error margin. A careful examination of the...

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Bibliographic Details
Published in:IEEE Engineering in medicine and biology magazine 21, 5 (2002).
Main Author: Bayram, E.
Format: Article
Language:English
Subjects:
Brain MR image.
Conductance function.
Confidence-based anisotropic filtering.
Discrete domain.
Edges.
Generous blurring.
Magnetic resonance imaging.
Medical diagnostic imaging.
Pixel locations.
Second derivative response.
Subsampling.
Zero conductance region band.
Zero-crossings.