Title: Silhouette Extraction for Shadow Volumes Using Potentially Visible Sets
Authors: Kobrtek, Jozef
Milet, Tomáš
Herout, Adam
Citation: Journal of WSCG. 2018, vol. 26, no. 1, p. 9-16.
Issue Date: 2019
Publisher: Václav Skala - UNION Agency
Document type: článek
URI: http://hdl.handle.net/11025/35549
ISSN: 1213-6964 (on-line)
1213-6972 (print)
1213-6980 (CD-ROM)
Keywords: silueta extrakce;oktalový strom;komprese;stínové svazky
Keywords in different language: silhouette extraction;octree;compression;shadow volumes
Abstract in different language: In this paper, we present a novel approach for accelerated silhouette computation based on potentially visible sets stored in the octree acceleration structure. The scene space, where the light source can appear, is subdivided into voxels. The octree voxels contain two precomputed sets of edges that potentially or always belong to the silhouette. We also propose a novel method of octree compression for reduction of the memory footprint of the resulting acceleration structure. Using our novel technique we were able to considerably decrease the computational complexity of finding the silhouette and reduce its sensitivity to the number of edges.
Rights: © Václav Skala - UNION Agency
Appears in Collections:Volume 27, Number 1 (2019)

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