Download e-book for iPad: Rendering Techniques’ 99: Proceedings of the Eurographics by Donald P. Greenberg (auth.), Dr. Dani Lischinski, Dr. Greg

By Donald P. Greenberg (auth.), Dr. Dani Lischinski, Dr. Greg Ward Larson (eds.)

ISBN-10: 321183382X

ISBN-13: 9783211833827

ISBN-10: 3709168090

ISBN-13: 9783709168097

This e-book includes the court cases of the tenth Eurographics Workshop on Rendering, which happened from the twenty first to the twenty third of June, 1999, in Granada, Spain. Origi­ nally an outgrowth of the once a year Eurographics assembly, the workshop used to be geared up through a devoted staff of researchers who felt there has been inadequate chance at ecu­ rographics and Siggraph to interchange principles particularly on rendering. over the last nine years, the workshop has develop into renown as a world watershed for high caliber paintings during this box, attracting among 50 and a hundred attendees every year to proportion their newest learn. This yr we got a complete of sixty three submissions. each one paper used to be conscientiously reviewed through of the 25 foreign programme committee participants, in addition to exterior reviewers, chosen by way of the co-chairs from a pool of seventy one contributors. (The programme committee and exterior reviewers are indexed following the contents pages.) during this new overview strategy, all submissions and stories have been dealt with electronically, with the ex­ ception of movies submitted with the various papers. This streamlined the assessment method significantly, whereas decreasing the prices and confusion linked to courier supply of countless numbers of papers.

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Additional info for Rendering Techniques’ 99: Proceedings of the Eurographics Workshop in Granada, Spain, June 21–23, 1999

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In other words, for every interpolant included in the Iinetree node, the 4D bounding box of the linetree node intersects the 4D bounding box that conservatively represents at least one of the interpolant's tunnel sections. This hierarchical line tree can be used to rapidly identify the interpolants affected by an object edit. 4 Interpolants and Ray Segments The previous section described a data structure that conservatively tracks the regions of line space that affect an interpolant. However, this representation is too conservative.

If b is opaque, I depends only on the occluder b. If b is transparent, I depends on the shaded region shown in the figure. In Figure 3-(c), the volume of space that affects the arcs corresponding to reflections in the interpolant is shaded. Thus, the regions of world space that affect an interpolant can be determined using the ray trees associated with the extremal rays of the interpolant. An interpolant can become invalid only if the scene edit affects one of these regions. 4 Finding Affected Interpolants using Global Linetrees Given a scene edit, we want to efficiently identify the interpolants that could be affected by the edit.

We treat it as if no point had mapped to this pixel) if its depth is more than some threshold beyond the average depth (currently we use 10%). This heuristic both correctly removes many points which should have been occluded and falsely removes some genuinely visible points near depth discontinuity edges. Fortunately the incorrect removal artifacts are largely hidden by the interpolation step. Next we use an interpolation and smoothing filter to fill in small gaps in the point image (see Figure 6).

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Rendering Techniques’ 99: Proceedings of the Eurographics Workshop in Granada, Spain, June 21–23, 1999 by Donald P. Greenberg (auth.), Dr. Dani Lischinski, Dr. Greg Ward Larson (eds.)


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