Interactive, Multiresolution Image-Space Rendering for Dynamic Area Lighting.
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| Title: | Interactive, Multiresolution Image-Space Rendering for Dynamic Area Lighting. |
|---|---|
| Authors: | Nichols, Greg1, Penmatsa, Rajeev1, Wyman, Chris1 |
| Source: | Computer Graphics Forum. Jun2010, Vol. 29 Issue 4, p1279-1288. 10p. 2 Color Photographs, 1 Black and White Photograph, 2 Illustrations, 5 Diagrams, 2 Graphs. |
| Subjects: | Real-time rendering (Computer graphics), Interactive computer graphics, Digital image processing, Special effects in lighting, Optical resolution, Shades & shadows |
| Abstract: | Area lights add tremendous realism, but rendering them interactively proves challenging. Integrating visibility is costly, even with current shadowing techniques, and existing methods frequently ignore illumination variations at unoccluded points due to changing radiance over the light's surface. We extend recent image-space work that reduces costs by gathering illumination in a multiresolution fashion, rendering varying frequencies at corresponding resolutions. To compute visibility, we eschew shadow maps and instead rely on a coarse screen-space voxelization, which effectively provides a cheap layered depth image for binary visibility queries via ray marching. Our technique requires no precomputation and runs at interactive rates, allowing scenes with large area lights, including dynamic content such as video screens. [ABSTRACT FROM AUTHOR] |
| Copyright of Computer Graphics Forum is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
| FullText | Links: – Type: pdflink Text: Availability: 0 |
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| Header | DbId: egs DbLabel: Engineering Source An: 52975067 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Interactive, Multiresolution Image-Space Rendering for Dynamic Area Lighting. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Nichols%2C+Greg%22">Nichols, Greg</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Penmatsa%2C+Rajeev%22">Penmatsa, Rajeev</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Wyman%2C+Chris%22">Wyman, Chris</searchLink><relatesTo>1</relatesTo> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Computer+Graphics+Forum%22">Computer Graphics Forum</searchLink>. Jun2010, Vol. 29 Issue 4, p1279-1288. 10p. 2 Color Photographs, 1 Black and White Photograph, 2 Illustrations, 5 Diagrams, 2 Graphs. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Real-time+rendering+%28Computer+graphics%29%22">Real-time rendering (Computer graphics)</searchLink><br /><searchLink fieldCode="DE" term="%22Interactive+computer+graphics%22">Interactive computer graphics</searchLink><br /><searchLink fieldCode="DE" term="%22Digital+image+processing%22">Digital image processing</searchLink><br /><searchLink fieldCode="DE" term="%22Special+effects+in+lighting%22">Special effects in lighting</searchLink><br /><searchLink fieldCode="DE" term="%22Optical+resolution%22">Optical resolution</searchLink><br /><searchLink fieldCode="DE" term="%22Shades+%26+shadows%22">Shades & shadows</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Area lights add tremendous realism, but rendering them interactively proves challenging. Integrating visibility is costly, even with current shadowing techniques, and existing methods frequently ignore illumination variations at unoccluded points due to changing radiance over the light's surface. We extend recent image-space work that reduces costs by gathering illumination in a multiresolution fashion, rendering varying frequencies at corresponding resolutions. To compute visibility, we eschew shadow maps and instead rely on a coarse screen-space voxelization, which effectively provides a cheap layered depth image for binary visibility queries via ray marching. Our technique requires no precomputation and runs at interactive rates, allowing scenes with large area lights, including dynamic content such as video screens. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Computer Graphics Forum is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1111/j.1467-8659.2010.01723.x Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 10 StartPage: 1279 Subjects: – SubjectFull: Real-time rendering (Computer graphics) Type: general – SubjectFull: Interactive computer graphics Type: general – SubjectFull: Digital image processing Type: general – SubjectFull: Special effects in lighting Type: general – SubjectFull: Optical resolution Type: general – SubjectFull: Shades & shadows Type: general Titles: – TitleFull: Interactive, Multiresolution Image-Space Rendering for Dynamic Area Lighting. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Nichols, Greg – PersonEntity: Name: NameFull: Penmatsa, Rajeev – PersonEntity: Name: NameFull: Wyman, Chris IsPartOfRelationships: – BibEntity: Dates: – D: 15 M: 06 Text: Jun2010 Type: published Y: 2010 Identifiers: – Type: issn-print Value: 01677055 Numbering: – Type: volume Value: 29 – Type: issue Value: 4 Titles: – TitleFull: Computer Graphics Forum Type: main |
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