Efficient ray tracing of volume data
ACM Transactions on Graphics (TOG)
Virtual voyage: interactive navigation in the human colon
Proceedings of the 24th annual conference on Computer graphics and interactive techniques
CEASAR: a smooth, accurate and robust centerline extraction algorithm
Proceedings of the conference on Visualization '00
Distance-field based skeletons for virtual navigation
Proceedings of the conference on Visualization '01
Penalized-Distance Volumetric Skeleton Algorithm
IEEE Transactions on Visualization and Computer Graphics
BIOMEDVIS '95 Proceedings of the 1995 Biomedical Visualization (BioMedVis '95)
Interactive 3-D virtual colonoscopy system
IEEE Transactions on Information Technology in Biomedicine
Fast path planning in virtual colonoscopy
Computers in Biology and Medicine
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Virtual colonoscopy is a non-invasive method for diagnosing colon diseases such as diverticulosis and cancer using digitized tomographic images to produce 3D images of the colon. In virtual colonoscopy, it is crucial to generate the camera path rapidly and accurately for an efficient examination. Most of the existing path-generation methods are computationally expensive since they require preliminary data structures and the 3D positions of all path points should be calculated. In this paper, we propose an automated pathgeneration method that secures visibility by emulating ray propagation through the colon conduit. The proposed method does not require any preliminary data preprocessing steps, which takes several minutes and it also dramatically reduces the number of points needed to represent the camera path. The experimental result is a perceivable increase in computational efficiency and a simpler approach to colon navigation. The proposed method can also be used in other applications that require efficient virtual navigation.