Shield fields: modeling and capturing 3D occluders

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We describe a unified representation of occluders in light transport and photography using shield fields: the 4D attenuation function which acts on any light field incident on an occluder. Our key theoretical result is that shield fields can be used to decouple the effects of occluders and incident illumination. We first describe the properties of shield fields in the frequency-domain and briefly analyze the "forward" problem of efficiently computing cast shadows. Afterwards, we apply the shield field signal-processing framework to make several new observations regarding the "inverse" problem of reconstructing 3D occluders from cast shadows

Douglas Lanman, Ramesh Raskar, Amit K. Agrawal, Ga

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Light Field | Shield Field | Shield Field Capture | TOG 2008 |

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Added	15 Dec 2010
Updated	15 Dec 2010
Type	Journal
Year	2008
Where	TOG
Authors	Douglas Lanman, Ramesh Raskar, Amit K. Agrawal, Gabriel Taubin

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Shield fields: modeling and capturing 3D occluders

Light Field | Shield Field | Shield Field Capture | TOG 2008 |

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