Modeling 3D objects with opacity hulls

The invention relates generally to computer graphics, and more particularly to acquiring images of three-dimensional physical objects to generate 3D computer graphics models that can be rendered in realistic scenes using the acquired images. A method models a three-dimensional object by first acquir...

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Bibliographic Details
Main Authors Matusik, Wojciech, Pfister, Hanspeter, Ngan, Wai Kit Addy, McMillan, Jr., Leonard
Format Patent
LanguageEnglish
Published 14.09.2004
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Summary:The invention relates generally to computer graphics, and more particularly to acquiring images of three-dimensional physical objects to generate 3D computer graphics models that can be rendered in realistic scenes using the acquired images. A method models a three-dimensional object by first acquiring alpha mattes of the object for multiple viewpoints. The alpha mattes are then projected onto a surface hull completely enclosing the object to construct an opacity hull storing opacity values of the surface of the object. The object is illuminated for various lighting conditions while images are acquired. The images are projected onto the opacity hull to render the object under arbitrary lighting conditions for arbitrary viewpoints.