Multiscale feature-preserving smoothing of tomographic data

Nassim Jibai, Cyril Soler, Kartic Subr, Nicolas Holzschuch

Research output: Chapter in Book/Report/Conference proceedingConference contribution


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.
Original languageEnglish
Title of host publicationInternational Conference on Computer Graphics and Interactive Techniques, SIGGRAPH 2011, Vancouver, BC, Canada, August 7-11, 2011 , Poster Proceedings
Number of pages1
ISBN (Print)978-1-4503-0971-4
Publication statusPublished - 2011

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