TY  - CONF
AU  - Debora Gil
AU  - Aura Hernandez-Sabate
AU  - Mireia Burnat
AU  - Steven Jansen
AU  - Jordi Martinez-Vilalta
A2  - CAIP
PY  - 2009//
TI  - Structure-Preserving Smoothing of Biomedical Images
T2  - LNCS
BT  - 13th International Conference on Computer Analysis of Images and Patterns
SP  - 427
EP  - 434
VL  - 5702
PB  - Springer Berlin Heidelberg
KW  - non-linear smoothing
KW  - differential geometry
KW  - anatomical structures segmentation
KW  - cardiac magnetic resonance
KW  - computerized tomography.
N2  - Smoothing of biomedical images should preserve gray-level transitions between adjacent tissues, while restoring contours consistent with anatomical structures. Anisotropic diffusion operators are based on image appearance discontinuities (either local or contextual) and might fail at weak inter-tissue transitions. Meanwhile, the output of block-wise and morphological operations is prone to present a block structure due to the shape and size of the considered pixel neighborhood. In this contribution, we use differential geometry concepts to define a diffusion operator that restricts to image consistent level-sets. In this manner, the final state is a non-uniform intensity image presenting homogeneous inter-tissue transitions along anatomical structures, while smoothing intra-structure texture. Experiments on different types of medical images (magnetic resonance, computerized tomography) illustrate its benefit on a further process (such as segmentation) of images.
SN  - 0302-9743
SN  - 978-3-642-03766-5
L1  - http://refbase.cvc.uab.es/files/GHB2009.pdf
UR  - http://dx.doi.org/10.1007/978-3-642-03767-2_52
N1  - IAM
ID  - Debora Gil2009
ER  -