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dc.contributor.authorHawkins, Timen_US
dc.contributor.authorEinarsson, Peren_US
dc.contributor.authorDebevec, Paulen_US
dc.contributor.editorKavita Bala and Philip Dutreen_US
dc.date.accessioned2014-01-27T14:48:25Z
dc.date.available2014-01-27T14:48:25Z
dc.date.issued2005en_US
dc.identifier.isbn3-905673-23-1en_US
dc.identifier.issn1727-3463en_US
dc.identifier.urihttp://dx.doi.org/10.2312/EGWR/EGSR05/091-098en_US
dc.description.abstractWe present a technique for capturing high-resolution 4D reflectance fields using the reciprocity property of light transport. In our technique we place the object inside a diffuse spherical shell and scan a laser across its surface. For each incident ray, the object scatters a pattern of light onto the inner surface of the sphere, and we photograph the resulting radiance from the sphere s interior using a camera with a fisheye lens. Because of reciprocity, the image of the inside of the sphere corresponds to the reflectance function of the surface point illuminated by the laser, that is, the color that point would appear to a camera along the laser ray when the object is lit from each direction on the surface of the sphere. The measured reflectance functions allow the object to be photorealistically rendered from the laser s viewpoint under arbitrary directional illumination conditions. Since each captured re- flectance function is a high-resolution image, our data reproduces sharp specular reflections and self-shadowing more accurately than previous approaches. We demonstrate our technique by scanning objects with a wide range of reflectance properties and show accurate renderings of the objects under novel illumination conditions.en_US
dc.publisherThe Eurographics Associationen_US
dc.subjectCategories and Subject Descriptors (according to ACM CCS): I.3.3 [Computer Graphics]: Capturing Real-World Data for Renderingen_US
dc.titleA Dual Light Stageen_US
dc.description.seriesinformationEurographics Symposium on Rendering (2005)en_US


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