Foveated Path Tracing: a Literature Review and a Performance Gain Analysis

Matias Koskela; Timo Viitanen; Pekka Jääskeläinen; Jarmo Takala

doi:10.1007/978-3-319-50835-1_65

Foveated Path Tracing: a Literature Review and a Performance Gain Analysis

Matias Koskela, Timo Viitanen, Pekka Jääskeläinen, Jarmo Takala

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Scientific › peer-review

2 Citations (Scopus)

469 Downloads (Pure)

Abstract

Virtual Reality (VR) places demanding requirements on the rendering pipeline: the rendering is stereoscopic and the refresh rate should be as high as 95Hz to make VR immersive. One promising technique for making the ﬁnal push to meet these requirements is foveated rendering, where the rendering eﬀort is prioritized on the areas where the user’s gaze lies. This requires rapid adjustment of level of detail based on screen space coordinates. Path tracing allows this kind of changes without much extra work. However, real-time path tracing is fairly new concept. This paper is a literature review of techniques related to optimizing path tracing with foveated rendering. In addition, we provide a theoretical estimation of performance gains available and calculate that 94% of the paths could be omitted. For this reason we predict that path tracing can soon meet the demanding rendering requirements of VR.

Original language	English
Title of host publication	Advances in Visual Computing
Subtitle of host publication	12th International Symposium, ISVC 2016, Las Vegas, NV, USA, December 12-14, 2016, Proceedings, Part I
Publisher	Springer
Pages	723-732
ISBN (Electronic)	978-3-319-50835-1
ISBN (Print)	978-3-319-50834-4
DOIs	https://doi.org/10.1007/978-3-319-50835-1_65
Publication status	Published - 2016
Publication type	A4 Article in conference proceedings
Event	INTERNATIONAL SYMPOSIUM ON VISUAL COMPUTING - Duration: 1 Jan 1900 → …

Publication series

Name	Lecture Notes in Computer Science
ISSN (Print)	0302-9743
ISSN (Electronic)	1611-3349

Conference

Conference	INTERNATIONAL SYMPOSIUM ON VISUAL COMPUTING
Period	1/01/00 → …

Keywords

Path Tracing
Foveated
rendering (computer graphics)
Virtual reality

Publication forum classification

Publication forum level 1

Access to Document

10.1007/978-3-319-50835-1_65

FoveatedPathTracingAccepted author manuscript, 1.05 MB

http://urn.fi/URN:NBN:fi:tty-201612214894

Cite this

Koskela, M., Viitanen, T., Jääskeläinen, P., & Takala, J. (2016). Foveated Path Tracing: a Literature Review and a Performance Gain Analysis. In Advances in Visual Computing: 12th International Symposium, ISVC 2016, Las Vegas, NV, USA, December 12-14, 2016, Proceedings, Part I (pp. 723-732). (Lecture Notes in Computer Science). Springer. https://doi.org/10.1007/978-3-319-50835-1_65

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abstract = "Virtual Reality (VR) places demanding requirements on the rendering pipeline: the rendering is stereoscopic and the refresh rate should be as high as 95Hz to make VR immersive. One promising technique for making the ﬁnal push to meet these requirements is foveated rendering, where the rendering eﬀort is prioritized on the areas where the user{\textquoteright}s gaze lies. This requires rapid adjustment of level of detail based on screen space coordinates. Path tracing allows this kind of changes without much extra work. However, real-time path tracing is fairly new concept. This paper is a literature review of techniques related to optimizing path tracing with foveated rendering. In addition, we provide a theoretical estimation of performance gains available and calculate that 94% of the paths could be omitted. For this reason we predict that path tracing can soon meet the demanding rendering requirements of VR.",

keywords = "Path Tracing, Foveated, rendering (computer graphics), Virtual reality",

author = "Matias Koskela and Timo Viitanen and Pekka J{\"a}{\"a}skel{\"a}inen and Jarmo Takala",

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language = "English",

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Koskela, M, Viitanen, T, Jääskeläinen, P & Takala, J 2016, Foveated Path Tracing: a Literature Review and a Performance Gain Analysis. in Advances in Visual Computing: 12th International Symposium, ISVC 2016, Las Vegas, NV, USA, December 12-14, 2016, Proceedings, Part I. Lecture Notes in Computer Science, Springer, pp. 723-732, INTERNATIONAL SYMPOSIUM ON VISUAL COMPUTING, 1/01/00. https://doi.org/10.1007/978-3-319-50835-1_65

Foveated Path Tracing: a Literature Review and a Performance Gain Analysis. / Koskela, Matias; Viitanen, Timo; Jääskeläinen, Pekka et al.
Advances in Visual Computing: 12th International Symposium, ISVC 2016, Las Vegas, NV, USA, December 12-14, 2016, Proceedings, Part I. Springer, 2016. p. 723-732 (Lecture Notes in Computer Science).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Scientific › peer-review

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T2 - INTERNATIONAL SYMPOSIUM ON VISUAL COMPUTING

AU - Koskela, Matias

AU - Viitanen, Timo

AU - Jääskeläinen, Pekka

AU - Takala, Jarmo

N1 - JUFOID=62555

PY - 2016

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N2 - Virtual Reality (VR) places demanding requirements on the rendering pipeline: the rendering is stereoscopic and the refresh rate should be as high as 95Hz to make VR immersive. One promising technique for making the ﬁnal push to meet these requirements is foveated rendering, where the rendering eﬀort is prioritized on the areas where the user’s gaze lies. This requires rapid adjustment of level of detail based on screen space coordinates. Path tracing allows this kind of changes without much extra work. However, real-time path tracing is fairly new concept. This paper is a literature review of techniques related to optimizing path tracing with foveated rendering. In addition, we provide a theoretical estimation of performance gains available and calculate that 94% of the paths could be omitted. For this reason we predict that path tracing can soon meet the demanding rendering requirements of VR.

AB - Virtual Reality (VR) places demanding requirements on the rendering pipeline: the rendering is stereoscopic and the refresh rate should be as high as 95Hz to make VR immersive. One promising technique for making the ﬁnal push to meet these requirements is foveated rendering, where the rendering eﬀort is prioritized on the areas where the user’s gaze lies. This requires rapid adjustment of level of detail based on screen space coordinates. Path tracing allows this kind of changes without much extra work. However, real-time path tracing is fairly new concept. This paper is a literature review of techniques related to optimizing path tracing with foveated rendering. In addition, we provide a theoretical estimation of performance gains available and calculate that 94% of the paths could be omitted. For this reason we predict that path tracing can soon meet the demanding rendering requirements of VR.

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KW - Foveated

KW - rendering (computer graphics)

KW - Virtual reality

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Foveated Path Tracing: a Literature Review and a Performance Gain Analysis

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