Structure-Preserving Smoothing of Biomedical Images

9 years 3 months ago
Structure-Preserving Smoothing of Biomedical Images
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. Key words: non-li...
Debora Gil, Aura Hernàndez-Sabaté, M
Added 26 May 2010
Updated 26 May 2010
Type Conference
Year 2009
Where CAIP
Authors Debora Gil, Aura Hernàndez-Sabaté, Mireia Burnat, Steven Jansen, Jordi Martínez-Villalta
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