Image-Based 3D Photography Using Opacity Hulls

Image-Based 3D Photography Using Opacity Hulls

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Image-Based 3D Photography Using Opacity Hulls

dc.contributor.author	Matusik, Wojciech
dc.contributor.author	Pfister, Hanspeter
dc.contributor.author	Ngan, Addy
dc.contributor.author	Beardsley, Paul
dc.contributor.author	Ziegler, Remo
dc.contributor.author	McMillan, Leonard
dc.date.accessioned	2010-06-01T13:51:31Z
dc.date.issued	2002
dc.identifier.citation	Matusik, Wojciech, Hanspeter Pfister, Addy Ngan, Paul Beardsley, Remo Ziegler, and Leonard McMillan. 2002. Image-based 3D photography using opacity hulls. In Proceedings of the 29th annual conference on Computer graphics and interactive techniques: July 23-26, 2002, San Antonio, Texas, 427-437. New York, N.Y.: ACM Press. Also published in ACM Transactions on Graphics 21(3): 427-437.	en_US
dc.identifier.isbn	1-58113-521-1	en_US
dc.identifier.issn	0730-0301	en_US
dc.identifier.uri	http://nrs.harvard.edu/urn-3:HUL.InstRepos:4141474
dc.description.abstract	We have built a system for acquiring and displaying high quality graphical models of objects that are impossible to scan with traditional scanners. Our system can acquire highly specular and fuzzy materials, such as fur and feathers. The hardware set-up consists of a turntable, two plasma displays, an array of cameras, and a rotating array of directional lights. We use multi-background matting techniques to acquire alpha mattes of the object from multiple viewpoints. The alpha mattes are used to construct an opacity hull. The opacity hull is a new shape representation, defined as the visual hull of the object with view-dependent opacity. It enables visualization of complex object silhouettes and seamless blending of objects into new environments. Our system also supports relighting of objects with arbitrary appearance using surface reflectance fields, a purely image-based appearance representation. Our system is the first to acquire and render surface reflectance fields under varying illumination from arbitrary viewpoints. We have built three generations of digitizers with increasing sophistication. In this paper, we present our results from digitizing hundreds of models.	en_US
dc.description.sponsorship	Engineering and Applied Sciences	en_US
dc.language.iso	en_US	en_US
dc.publisher	Association for Computing Machinery	en_US
dc.relation.isversionof	doi:10.1145/566570.566599	en_US
dc.relation.isversionof	doi:10.1145/566654.566599	en_US
dc.relation.hasversion	http://gvi.seas.harvard.edu/sites/all/files/SIG2002_0.pdf	en_US
dash.license	LAA
dc.subject	3D photography	en_US
dc.subject	image-based rendering	en_US
dc.title	Image-Based 3D Photography Using Opacity Hulls	en_US
dc.type	Monograph or Book	en_US
dc.description.version	Accepted Manuscript	en_US
dc.relation.journal	ACM Transactions on Graphics	en_US
dash.depositing.author	Pfister, Hanspeter
dc.date.available	2010-06-01T13:51:31Z