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  Approximating Dynamic Global Illumination in Image Space

Ritschel, T., Grosch, T., & Seidel, H.-P. (2009). Approximating Dynamic Global Illumination in Image Space. In ACM SIGGRAPH Symposium on Interactive 3D Graphics and Games (pp. 75-82). New York: ACM.

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Item Permalink: https://hdl.handle.net/11858/00-001M-0000-000F-1977-8 Version Permalink: https://hdl.handle.net/11858/00-001M-0000-000F-1978-6
Genre: Conference Paper

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 Creators:
Ritschel, Tobias1, Author           
Grosch, Thorsten1, Author           
Seidel, Hans-Peter1, Author           
Affiliations:
1Computer Graphics, MPI for Informatics, Max Planck Society, ou_40047              

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 Abstract: Physically plausible illumination at real-time framerates is often achieved using approximations. One popular example is ambient occlusion (AO), for which very simple and efficient implementations are used extensively in production. Recent methods approximate AO between nearby geometry in screen space (SSAO). The key observation described in this paper is, that screen-space occlusion methods can be used to compute many more types of effects than just occlusion, such as directional shadows and indirect color bleeding. The proposed generalization has only a small overhead compared to classic SSAO, approximates direct and one-bounce light transport in screen space, can be combined with other methods that simulate transport for macro structures and is visually equivalent to SSAO in the worst case without introducing new artifacts. Since our method works in screen space, it does not depend on the geometric complexity. Plausible directional occlusion and indirect lighting effects can be displayed for large and fully dynamic scenes at real-time frame rates.

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Language(s): eng - English
 Dates: 2009-03-242009
 Publication Status: Issued
 Pages: -
 Publishing info: New York : ACM
 Table of Contents: -
 Rev. Type: -
 Identifiers: eDoc: 520488
Other: Local-ID: C125675300671F7B-40A583FA98914182C1257583005456DC-RitschelGS2009:SSDO
 Degree: -

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Title: Untitled Event
Place of Event: Boston, MA, USA
Start-/End Date: 2009-02-27 - 2009-03-01

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Title: ACM SIGGRAPH Symposium on Interactive 3D Graphics and Games
Source Genre: Proceedings
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Publ. Info: New York : ACM
Pages: - Volume / Issue: - Sequence Number: - Start / End Page: 75 - 82 Identifier: ISBN: 978-1-60558-429-4