Multiscale Feature-Preserving Smoothing of Tomographic Data

Nassim Jibai 1 Cyril Soler 1 Kartic Subr 2 Nicolas Holzschuch 1
1 ARTIS - Acquisition, representation and transformations for image synthesis
Inria Grenoble - Rhône-Alpes, INPG - Institut National Polytechnique de Grenoble , LJK - Laboratoire Jean Kuntzmann
Abstract : Computer tomography (CT) has wide application in medical imaging and reverse engineering. Due to the limited number of projections used in reconstructing the volume, the resulting 3D data is typically noisy. Contouring such data, for surface extraction, yields surfaces with localised artifacts of complex topology. To avoid such artifacts, we propose a method for feature-preserving smoothing of CT data. The smoothing is based on anisotropic diffusion, with a diffusion tensor designed to smooth noise up to a given scale, while preserving features. We compute these diffusion kernels from the directional histograms of gradients around each voxel, using a fast GPU implementation.
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Conference papers
Dan Wexler. ACM SIGGRAPH 2011 Posters, Aug 2011, Vancouver, Canada. pp.Article No. 63, 2011, SIGGRAPH '11 ACM SIGGRAPH 2011 Posters. <10.1145/2037715.2037786>



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Nassim Jibai, Cyril Soler, Kartic Subr, Nicolas Holzschuch. Multiscale Feature-Preserving Smoothing of Tomographic Data. Dan Wexler. ACM SIGGRAPH 2011 Posters, Aug 2011, Vancouver, Canada. pp.Article No. 63, 2011, SIGGRAPH '11 ACM SIGGRAPH 2011 Posters. <10.1145/2037715.2037786>. <inria-00611915>

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