On digital distance transforms in three dimensions
Computer Vision and Image Understanding
Ray Casting Architectures for Volume Visualization
IEEE Transactions on Visualization and Computer Graphics
Conformal Surface Parameterization for Texture Mapping
IEEE Transactions on Visualization and Computer Graphics
Conformal virtual colon flattening
Proceedings of the 2006 ACM symposium on Solid and physical modeling
A Pipeline for Computer Aided Polyp Detection
IEEE Transactions on Visualization and Computer Graphics
Colon Unfolding Via Skeletal Subspace Deformation
MICCAI '08 Proceedings of the 11th International Conference on Medical Image Computing and Computer-Assisted Intervention, Part II
An interview with Edsger W. Dijkstra
Communications of the ACM
Supine and Prone Colon Registration Using Quasi-Conformal Mapping
IEEE Transactions on Visualization and Computer Graphics
Classifying CT Image Data Into Material Fractions by a Scale and Rotation Invariant Edge Model
IEEE Transactions on Image Processing
EGVISSYM'01 Proceedings of the 3rd Joint Eurographics - IEEE TCVG conference on Visualization
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The technique of virtual colon unfolding (VU) is a non-invasive procedure to detect polyps on the colon inner wall. Compared with conventional virtual colonoscopy, VU is faster and results in fewer uninspected regions. However, the performance of VU is more vulnerable to the quality of colon segmentation. In this paper, an improved colon segmentation method is proposed to enhance the performance of VU. The improved method is with the use of a novel post-processing scheme, which is composed of two parts: attain more accurate centerlines with the help of scalar complementary geodesic distance field and compensate gap-like artifacts based on local morphological information. We validated the improved method on twenty colon cases via two widely used VU techniques, the ray-casting technique and the conformal-mapping technique. Experimental results indicated that with the use of the improved method, the rates of correct response via ray-casting and conformal-mapping techniques were respectively elevated by 14.9% and 13.1%, while the rates of false response were respectively reduced by 8.4% and 10.8%.