Scale-Space for Discrete Signals
IEEE Transactions on Pattern Analysis and Machine Intelligence
Topological segmentation of discrete surfaces
International Journal of Computer Vision
A new characterization of three-dimensional simple points
Pattern Recognition Letters
On topology preservation in 3D thinning
CVGIP: Image Understanding
Distance-ordered homotopic thinning: a skeletonization algorithm for 3D digital images
Computer Vision and Image Understanding
Curves and surfaces for CAGD: a practical guide
Curves and surfaces for CAGD: a practical guide
A three-dimensional holes closing algorithm
Pattern Recognition Letters
Efficient Skeletonization of Volumetric Objects
IEEE Transactions on Visualization and Computer Graphics
Penalized-Distance Volumetric Skeleton Algorithm
IEEE Transactions on Visualization and Computer Graphics
An Efficient Central Path Algorithm for Virtual Navigation
CGI '04 Proceedings of the Computer Graphics International
Integrating digital topology in image-processing libraries
Computer Methods and Programs in Biomedicine
Teniæ coli detection from colon surface: extraction of anatomical markers for virtual colonoscopy
ISVC'07 Proceedings of the 3rd international conference on Advances in visual computing - Volume Part I
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The central path of the colon is an important tool in computer-assisted diagnosis: it is an aid to navigation during a virtual colonoscopy and allows an easier follow-up of the patient pathologies. However the computation of this central path remains a difficult task: on both MR and CT medical images, the wall of the colon is too thin with respect to the resolution of the acquisition and thus does not appear on images. Hence, when two sections of the colon are in contact, a loop is created in the image, and causes a wrong central path. In this paper, we propose an algorithm to remove those loops, based on the tracking of the colon skeleton in a scale-space. An evaluation of our algorithm on 20 patients showed that every loop was successfully removed, yielding a centered, anatomically and topologically correct central path.