Display of Surfaces from Volume Data
IEEE Computer Graphics and Applications
Virtual voyage: interactive navigation in the human colon
Proceedings of the 24th annual conference on Computer graphics and interactive techniques
Volume Visualization (Tutorial)
Volume Visualization (Tutorial)
Data Visualization Techniques
Nonlinear virtual colon unfolding
Proceedings of the conference on Visualization '01
Non-distorting Flattening for Virtual Colonoscopy
MICCAI '00 Proceedings of the Third International Conference on Medical Image Computing and Computer-Assisted Intervention
BIOMEDVIS '95 Proceedings of the 1995 Biomedical Visualization (BioMedVis '95)
Efficient Space-Leaping Using Optimal Block Sets
IEICE - Transactions on Information and Systems
Unfolding of virtual endoscopy using ray-template
ISBMDA'05 Proceedings of the 6th International conference on Biological and Medical Data Analysis
EGVISSYM'01 Proceedings of the 3rd Joint Eurographics - IEEE TCVG conference on Visualization
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Unfolding is a new visualization method for colorectal disease and polyp detection. Compared with a virtual endoscopy method, it is more suitable for medical applications because it gives us unfold images of the inner surface in an organ. However, since conventional unfold methods generate only 2D images, it is difficult to show the surface at a first glance and to manage unfolding results with diverse viewing controls such as rotation and magnification. To solve it, we propose an efficient unfolding method using surface reconstruction. Firstly, we generate a 2D unfold image using volume ray casting. At the same time, we store distance values from each sample point on a central path to colon surface, for all rays. After making a height field from the distance values, we reconstruct a 3D surface model. Lastly, a 3D unfold image is acquired by mapping the 2D unfold image into the 3D surface model. Since our method offers the overall shape of an organ surface, the problematic areas can be identified quickly and inspected afterwards in more detail.