Screen space hair self shadowing by translucent hybrid ambient occlusion

Zhuopeng Zhang; Shigeo Morishima

doi:10.1007/978-3-319-53838-9_3

Screen space hair self shadowing by translucent hybrid ambient occlusion

Zhuopeng Zhang, Shigeo Morishima

School of Advanced Science and Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

Screen space ambient occlusion is a very efficient means to capture the shadows caused by adjacent objects. However it is incapable of expressing transparency of objects. We introduce an approach which behaves like the combination of ambient occlusion and translucency. This method is an extension of the traditional screen space ambient occlusion algorithm with extra density field input. It can be applied on rendering mesh objects, and moreover it is very suitable for rendering complex hair models. We use the new algorithm to approximate light attenuation though semi-transparent hairs at real-time. Our method is implemented on common GPU, and independent from pre-computation. When it is used in environment lighting, the hair shading is visually similar to however one order of magnitude faster than existing algorithm.

Original language	English
Title of host publication	Smart Graphics - 13th International Symposium, SG 2015, Revised Selected Papers
Editors	Marc Christie, Yaxi Chen, Wenrong Tan
Publisher	Springer Verlag
Pages	29-40
Number of pages	12
ISBN (Print)	9783319538372
DOIs	https://doi.org/10.1007/978-3-319-53838-9_3
Publication status	Published - 2017
Event	13th International Symposium on Smart Graphics, SG 2015 - Chengdu, China Duration: 2015 Aug 26 → 2015 Aug 28

Publication series

Name	Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
Volume	9317 LNCS
ISSN (Print)	0302-9743
ISSN (Electronic)	1611-3349

Other

Other	13th International Symposium on Smart Graphics, SG 2015
Country	China
City	Chengdu
Period	15/8/26 → 15/8/28

Keywords

Computer animation
Deferred shading
Hair shadowing
Real-time rendering

ASJC Scopus subject areas

Theoretical Computer Science
Computer Science(all)

Access to Document

10.1007/978-3-319-53838-9_3

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Zhang, Z., & Morishima, S. (2017). Screen space hair self shadowing by translucent hybrid ambient occlusion. In M. Christie, Y. Chen, & W. Tan (Eds.), Smart Graphics - 13th International Symposium, SG 2015, Revised Selected Papers (pp. 29-40). (Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics); Vol. 9317 LNCS). Springer Verlag. https://doi.org/10.1007/978-3-319-53838-9_3

Screen space hair self shadowing by translucent hybrid ambient occlusion. / Zhang, Zhuopeng; Morishima, Shigeo.

Smart Graphics - 13th International Symposium, SG 2015, Revised Selected Papers. ed. / Marc Christie; Yaxi Chen; Wenrong Tan. Springer Verlag, 2017. p. 29-40 (Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics); Vol. 9317 LNCS).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Zhang, Z & Morishima, S 2017, Screen space hair self shadowing by translucent hybrid ambient occlusion. in M Christie, Y Chen & W Tan (eds), Smart Graphics - 13th International Symposium, SG 2015, Revised Selected Papers. Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics), vol. 9317 LNCS, Springer Verlag, pp. 29-40, 13th International Symposium on Smart Graphics, SG 2015, Chengdu, China, 15/8/26. https://doi.org/10.1007/978-3-319-53838-9_3

Zhang Z, Morishima S. Screen space hair self shadowing by translucent hybrid ambient occlusion. In Christie M, Chen Y, Tan W, editors, Smart Graphics - 13th International Symposium, SG 2015, Revised Selected Papers. Springer Verlag. 2017. p. 29-40. (Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)). https://doi.org/10.1007/978-3-319-53838-9_3

Zhang, Zhuopeng ; Morishima, Shigeo. / Screen space hair self shadowing by translucent hybrid ambient occlusion. Smart Graphics - 13th International Symposium, SG 2015, Revised Selected Papers. editor / Marc Christie ; Yaxi Chen ; Wenrong Tan. Springer Verlag, 2017. pp. 29-40 (Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)).

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abstract = "Screen space ambient occlusion is a very efficient means to capture the shadows caused by adjacent objects. However it is incapable of expressing transparency of objects. We introduce an approach which behaves like the combination of ambient occlusion and translucency. This method is an extension of the traditional screen space ambient occlusion algorithm with extra density field input. It can be applied on rendering mesh objects, and moreover it is very suitable for rendering complex hair models. We use the new algorithm to approximate light attenuation though semi-transparent hairs at real-time. Our method is implemented on common GPU, and independent from pre-computation. When it is used in environment lighting, the hair shading is visually similar to however one order of magnitude faster than existing algorithm.",

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AB - Screen space ambient occlusion is a very efficient means to capture the shadows caused by adjacent objects. However it is incapable of expressing transparency of objects. We introduce an approach which behaves like the combination of ambient occlusion and translucency. This method is an extension of the traditional screen space ambient occlusion algorithm with extra density field input. It can be applied on rendering mesh objects, and moreover it is very suitable for rendering complex hair models. We use the new algorithm to approximate light attenuation though semi-transparent hairs at real-time. Our method is implemented on common GPU, and independent from pre-computation. When it is used in environment lighting, the hair shading is visually similar to however one order of magnitude faster than existing algorithm.

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Screen space hair self shadowing by translucent hybrid ambient occlusion

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Keywords

ASJC Scopus subject areas

Access to Document

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