72 search results - page 1 / 15 » Estimation of Image Bias Field with Sparsity Constraints |
CVPR
2010
IEEE
14 years 1 months ago
2010
IEEE
We propose a new scheme to estimate image bias field through introducing two sparsity constraints. One is that the bias-free image has concise representation with image gradients o...
MICCAI
2006
Springer
14 years 5 months ago
2006
Springer
This work investigates the effects of nonrigid transformation model and deformation constraints on the results of deformation-based morphometry (DBM) studies. We evaluate three pop...
TMI
2002
13 years 4 months ago
2002
In this paper, we present a novel algorithm for fuzzy segmentation of magnetic resonance imaging (MRI) data and estimation of intensity inhomogeneities using fuzzy logic. MRI inten...
ICIP
2005
IEEE
14 years 6 months ago
2005
IEEE
Magnetic Resonance (MR) images often exhibit grayscale nonuniformities, caused by radio frequency (RF) coil design or acquisition sequences. Many algorithms to remove these nonuni...
ECCV
2004
Springer
14 years 6 months ago
2004
Springer
We present a method for estimating intrinsic images from a fixed-viewpoint image sequence captured under changing illumination directions. Previous work on this problem reduces the...