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dc.contributor.authorWang, SWen_US
dc.contributor.authorShih, ZCen_US
dc.contributor.authorChang, RCen_US
dc.date.accessioned2014-12-08T15:42:16Z-
dc.date.available2014-12-08T15:42:16Z-
dc.date.issued2002-07-01en_US
dc.identifier.issn1016-2364en_US
dc.identifier.urihttp://hdl.handle.net/11536/28691-
dc.description.abstractIn this paper, we propose an efficient and stable algorithm for finding the ray-surface intersections. Newton's method and Bezier clipping are adapted to form the core of our algorithm. Ray coherence is used to find starting points for Newton iteration. We introduce an obstruction detection technique to verify whether an intersection point found by using Newton's method is the closest one. When Newton's method fails to achieve convergence, we use Bezier clipping as the substitution to find the intersection points. This combination achieves significant improvement in tracing primary rays. A similar approach also successfully improves the performance in tracing secondary rays.en_US
dc.language.isoen_USen_US
dc.subjectray tracingen_US
dc.subjectNewton's methoden_US
dc.subjectBezier clippingen_US
dc.subjectparametric surfacesen_US
dc.subjectray coherenceen_US
dc.subjectBezier surfaceen_US
dc.titleAn efficient and stable ray tracing algorithm for parametric surfacesen_US
dc.typeArticleen_US
dc.identifier.journalJOURNAL OF INFORMATION SCIENCE AND ENGINEERINGen_US
dc.citation.volume18en_US
dc.citation.issue4en_US
dc.citation.spage541en_US
dc.citation.epage561en_US
dc.contributor.department資訊工程學系zh_TW
dc.contributor.departmentDepartment of Computer Scienceen_US
dc.identifier.wosnumberWOS:000177224200006-
dc.citation.woscount2-
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