research-article

Camera space volumetric shadows

Authors:

Johannes Hanika,

Luca FascioneAuthors Info & Claims

DigiPro '12: Proceedings of the Digital Production Symposium

Pages 7 - 14

https://doi.org/10.1145/2370919.2370921

Published: 04 August 2012 Publication History

Abstract

We transform irregularly sampled shadow map data to deep image buffers in camera space, which are then used to create volumetric shadows in a deep compositing workflow. Our technique poses no restrictions on the sample locations of the shadow map and can thus be used with a variety of adaptive approaches to produce more precise shadows closer to the camera. To construct watertight shafts towards the light source forming crepuscular rays, we use a two-dimensional quad tree in light space. This structure is constructed from the shadow samples independent of the camera position, making stereo renders and camera animations for static light sources and geometry more efficient. The actual integration of volumetric light transport is then left to a fast image space deep compositing workflow, enabling short turnaround times for cinematic lighting design. We show a simple scalable ray tracing kernel to convert the quad tree representation to a deep image for each camera, where ray tracing takes only 25% of the processing time.

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Cited By

Kavakli MCremona C(2022)The Virtual Production Studio Concept – An Emerging Game Changer in Filmmaking2022 IEEE Conference on Virtual Reality and 3D User Interfaces (VR)10.1109/VR51125.2022.00020(29-37)Online publication date: Mar-2022
https://doi.org/10.1109/VR51125.2022.00020
Kivi PMakitalo MZadnik JIkkala JVadakital VJaaskelainen P(2022)Real-Time Rendering of Point Clouds With Photorealistic Effects: A SurveyIEEE Access10.1109/ACCESS.2022.314676810(13151-13173)Online publication date: 2022
https://doi.org/10.1109/ACCESS.2022.3146768
Vasilakis AVardis KPapaioannou G(2020)A Survey of Multifragment RenderingComputer Graphics Forum10.1111/cgf.1401939:2(623-642)Online publication date: 13-Jul-2020
https://doi.org/10.1111/cgf.14019
Show More Cited By

Index Terms

Camera space volumetric shadows
1. Computing methodologies
  1. Computer graphics
    1. Image manipulation
      1. Texturing
    2. Rendering
      1. Ray tracing

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Published In

cover image ACM Conferences

DigiPro '12: Proceedings of the Digital Production Symposium

August 2012

80 pages

ISBN:9781450316491

DOI:10.1145/2370919

Conference Chairs:
Armin Bruderlin
Sony Pictures Imageworks
,
Ken Anjyo
OLM Digital, Inc.
,
Program Chairs:
Eric Enderton
NVIDIA
,
Larry Cutler
PDI/Dreamworks

Copyright © 2012 ACM.

Permission to make digital or hard copies of all or part of this work for personal or classroom use is granted without fee provided that copies are not made or distributed for profit or commercial advantage and that copies bear this notice and the full citation on the first page. Copyrights for components of this work owned by others than ACM must be honored. Abstracting with credit is permitted. To copy otherwise, or republish, to post on servers or to redistribute to lists, requires prior specific permission and/or a fee. Request permissions from [email protected]

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SIGGRAPH: ACM Special Interest Group on Computer Graphics and Interactive Techniques

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Association for Computing Machinery

New York, NY, United States

Publication History

Published: 04 August 2012

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DigiPro '12

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DigiPro '12: The Digital Production Symposium

August 4, 2012

California, Glendale

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Cited By

Kavakli MCremona C(2022)The Virtual Production Studio Concept – An Emerging Game Changer in Filmmaking2022 IEEE Conference on Virtual Reality and 3D User Interfaces (VR)10.1109/VR51125.2022.00020(29-37)Online publication date: Mar-2022
https://doi.org/10.1109/VR51125.2022.00020
Kivi PMakitalo MZadnik JIkkala JVadakital VJaaskelainen P(2022)Real-Time Rendering of Point Clouds With Photorealistic Effects: A SurveyIEEE Access10.1109/ACCESS.2022.314676810(13151-13173)Online publication date: 2022
https://doi.org/10.1109/ACCESS.2022.3146768
Vasilakis AVardis KPapaioannou G(2020)A Survey of Multifragment RenderingComputer Graphics Forum10.1111/cgf.1401939:2(623-642)Online publication date: 13-Jul-2020
https://doi.org/10.1111/cgf.14019
Hillman PBalents BGossett CPhillips CRose R(2018)A scheme for storing object ID manifests in openEXR imagesProceedings of the 8th Annual Digital Production Symposium10.1145/3233085.3233086(1-8)Online publication date: 11-Aug-2018
https://dl.acm.org/doi/10.1145/3233085.3233086
Fascione LHanika JLeone MDroske MSchwarzhaupt JDavidovič TWeidlich AMeng J(2018)ManukaACM Transactions on Graphics10.1145/318216137:3(1-18)Online publication date: 7-Aug-2018
https://dl.acm.org/doi/10.1145/3182161
Vicini DAdler DNovák JRousselle FBurley B(2018)Denoising Deep Monte Carlo RenderingsComputer Graphics Forum10.1111/cgf.1353338:1(316-327)Online publication date: 27-Aug-2018
https://doi.org/10.1111/cgf.13533
Li HLiu W(2018)Accurate Shadow Generation Analysis in Computer Graphics2018 IEEE 20th International Conference on High Performance Computing and Communications; IEEE 16th International Conference on Smart City; IEEE 4th International Conference on Data Science and Systems (HPCC/SmartCity/DSS)10.1109/HPCC/SmartCity/DSS.2018.00186(1116-1120)Online publication date: Jun-2018
https://doi.org/10.1109/HPCC/SmartCity/DSS.2018.00186
Ali HSunar MKolivand H(2017)Soft bilateral filtering volumetric shadows using cube shadow mapsPLOS ONE10.1371/journal.pone.017841512:6(e0178415)Online publication date: 20-Jun-2017
https://doi.org/10.1371/journal.pone.0178415

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