Efficient Display of Background Objects for Virtual Endoscopy using Flexible First-Hit Ray Casting

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dc.contributor.authorNeubauer, A.en_US
dc.contributor.authorForster, M.en_US
dc.contributor.authorWegenkittl, R.en_US
dc.contributor.authorMroz, L.en_US
dc.contributor.authorBühler, K.en_US
dc.contributor.editorOliver Deussen and Charles Hansen and Daniel Keim and Dietmar Saupeen_US
dc.date.accessioned2014-01-30T07:46:11Z
dc.date.available2014-01-30T07:46:11Z
dc.date.issued2004en_US
dc.description.abstractMany applications of virtual endoscopy require the display of background objects behind the semi-transparent surface of the investigated organ. This paper deals with pre-processing and visualization of background objects for virtual endoscopy. A new first-hit ray casting technique for efficient perspective iso-surfacing of arbitrarily selected objects of interest is described: Visualization is performed without the use of dedicated hardware or data structures limiting flexibility (e.g., polygonal meshes or distance fields). The speedup is gained by exploiting inter-pixel coherency and by finding a near-optimal compromise between reduction of ray-tracking distances and limitation of the administrational cost associated with this reduction. The algorithm was developed by enhancing the previously published cell-based first-hit ray casting algorithm. This paper describes the original algorithm and explains the extensions needed to achieve interactive rendering of background objects.en_US
dc.description.seriesinformationEurographics / IEEE VGTC Symposium on Visualizationen_US
dc.identifier.isbn3-905673-07-Xen_US
dc.identifier.issn1727-5296en_US
dc.identifier.urihttps://doi.org/10.2312/VisSym/VisSym04/301-310en_US
dc.publisherThe Eurographics Associationen_US
dc.titleEfficient Display of Background Objects for Virtual Endoscopy using Flexible First-Hit Ray Castingen_US
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