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Reduction of noise-induced streak artifacts in X-ray computed tomography through spline-based penalized-likelihood sinogram smoothing.
Patrick J. La Rivière
David Matthew Billmire
Published in:
IEEE Trans. Medical Imaging (2005)
Keyphrases
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penalized likelihood
image reconstruction
maximum likelihood
noise removal
em algorithm
high quality
reconstructed image
limited angle
signal to noise ratio
noise reduction
log likelihood
noise level
image structure
gaussian noise
radon transform
coarse to fine
anisotropic diffusion
b spline
denoising
feature space