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Searching for "Between umbra and penumbra." – sorted by Relevance.

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11 documents found, showing 1 through 10. Next 10 →

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Between umbra and penumbra
by Julien Demouth, Olivier Devillers, Hazel Everett, Sylvain Lazard, Raimund Seidel — in "Proc. 23th Annual ACM Symposium on Computational Geometry
…Between Umbra and Penumbra Julien Demouth † Olivier Devillers ‡ Hazel Everett † Sylvain Lazard…
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Realistic Vector Graphics Rendering • Theme: Computational Geometry
by Lab Inria Nancy Gr
…. These discontinuities correspond to the boundaries between umbra, penumbra, and full-light regions (penumbra…
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A Discontinuity Meshing Algorithm for Accurate Radiosity
by Dani Lischinski, Filippo Tampieri, Donald P. Greenberg — 1992 — IEEE CG&A
… illustrates that when several occluding obstacles are involved, the boundaries between umbra and penumbra…
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Single Sample Soft Shadows
by Steven Parker Peter, Peter Shirley, Brian Smits — 1998
… between umbra and penumbra boundaries. We first compute the distance t 0 to the point on the shadow ray…
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Simplifying the Representation of Radiance from Multiple Emitters
by George Drettakis — 1994 — In Proceedings of 5th EG Workshop on Rendering
…, and an estimate of the region between umbra and penumbra, and second the full computation of all discontinuity…
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Global Illumination Using Overlapping Wavelets
by Srinadh Godavarthy, Terry Huntsberger — 1998 — In Proceedings of 8th ICECGDG conference
… and there is no clear separation between umbra and penumbra regions. Figure 7 was rendered in 5.0secs. Figure 8 took 0…
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Structured Penumbral Irradiance Computation
by George Drettakis, Eugene Fiume — 1996
…, that is the boundary between umbra and penumbra as well as the boundary between penumbra and light for simple…
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Design and Evaluation of the CLARIT-TREC-2 System", D Evans and R
by N. Holzschuch, L. Alonso — 1993 — Lefferts, in: The Second Text REtrieval Conference (TREC-2), D.K. Harman (Ed), NIST Special Publication
… only extremal discontinuities: the boundary between umbra and penumbra and the boundary between…
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The Irradiance Volume
by Gene Greger Peter, Peter Shirley Y, Philip M. Hubbard Z, Donald P. Greenberg — 1998 — IEEE Computer Graphics and Applications
… zones between umbra and penumbra, and transition zones between penumbra and unshadowed regions [3…
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Dynamic Discontinuities for Radiosity
by Adam Worrall, Claire Willis, Derek Paddon — 1995
… will be detected. Sample points which lie between the umbra and penumbra will still require new visibility…
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