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Soft bilateral filtering volumetric shadows using cube shadow maps

Ali, HH, Sunar, MS and Kolivand, H (2017) Soft bilateral filtering volumetric shadows using cube shadow maps. PLoS One, 12 (6). ISSN 1932-6203

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Volumetric shadows often increase the realism of rendered scenes in computer graphics. Typical volumetric shadows techniques do not provide a smooth transition effect in real-time with conservation on crispness of boundaries. This research presents a new technique for generating high quality volumetric shadows by sampling and interpolation. Contrary to conventional ray marching method, which requires extensive time, this proposed technique adopts downsampling in calculating ray marching. Furthermore, light scattering is computed in High Dynamic Range buffer to generate tone mapping. The bilateral interpolation is used along a view rays to smooth transition of volumetric shadows with respect to preserving-edges. In addition, this technique applied a cube shadow map to create multiple shadows. The contribution of this technique isreducing the number of sample points in evaluating light scattering and then introducing bilateral interpolation to improve volumetric shadows. This contribution is done by removing the inherent deficiencies significantly in shadow maps. This technique allows obtaining soft marvelous volumetric shadows, having a good performance and high quality, which show its potential for interactive applications.

Item Type: Article
Additional Information: Ali HH, Sunar MS, Kolivand H (2017) Soft bilateral filtering volumetric shadows using cube shadow maps. PLoS ONE 12(6): e0178415.
Uncontrolled Keywords: MD Multidisciplinary
Subjects: Q Science > QA Mathematics > QA75 Electronic computers. Computer science
Divisions: Computer Science & Mathematics
Publisher: Public Library of Science
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Date Deposited: 20 Feb 2018 10:55
Last Modified: 04 Sep 2021 03:10
DOI or ID number: 10.1371/journal.pone.0178415
URI: https://researchonline.ljmu.ac.uk/id/eprint/8066
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