Method and apparatus for determining reflectance data of a subject
First Claim
1. An apparatus for obtaining reflectance data of an object comprising:
- a diffuser having a surface; and
a mapping portion that effects a bidirectional mapping between a light field at the object'"'"'s surface and a light field at the diffuser surface for BRDF capture of the object, the mapping portion includes a kaleidoscope and a lenslet array which forms an image of at least a portion of the object surface on the diffuser surface.
1 Assignment
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Accused Products
Abstract
An apparatus for obtaining reflectance data of an object includes a diffuser having a surface. The apparatus includes a mapping portion that effects a mapping between a light field at the object'"'"'s surface and a light field at the diffuser surface for BRDF capture of the object. A method for obtaining reflectance data usable to determine a plurality of values of the BRDF of an object. The method includes the steps of illuminating the object. There is the step of effecting a mapping between a light field at the object'"'"'s surface and a light field at a diffuser surface for BRDF capture of the object with a mapping portion. An apparatus and a method for measuring an 8D reflectance field of an object or a 3D object.
16 Citations
40 Claims
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1. An apparatus for obtaining reflectance data of an object comprising:
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a diffuser having a surface; and a mapping portion that effects a bidirectional mapping between a light field at the object'"'"'s surface and a light field at the diffuser surface for BRDF capture of the object, the mapping portion includes a kaleidoscope and a lenslet array which forms an image of at least a portion of the object surface on the diffuser surface. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A method for obtaining reflectance data usable to determine a plurality of values of the BRDF of an object comprising the steps of:
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illuminating at least a portion of the object with light passing through a kaleidoscope; and effecting a mapping between a light field at the object'"'"'s surface and a light field at a diffuser surface for BRDF capture of at least a portion of the object with a mapping portion. - View Dependent Claims (16, 17, 18, 19, 20)
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21. An apparatus for measuring an 8D reflectance field of an object comprising:
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a kaleidoscope having an opening; one or more projectors which illuminates at least a portion of the object with light passing through the kaleidoscope; a plurality of cameras dispersed in a staggered arrangement relative to the opening of the kaleidoscope to take images of at least a portion of the surface of the object through the kaleidoscope; and a computer connected to the plurality of cameras for measuring 8D reflectance field of the object. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30)
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31. A method for measuring an 8D reflectance field of an object comprising the steps of:
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illuminating at least a portion of the object with light from one or more projectors passing through a kaleidoscope having an opening; taking images of at least a portion of the surface of the object through the kaleidoscope with a plurality of cameras dispersed in a staggered arrangement relative to an opening of the kaleidoscope; and measuring 8D reflectance field of the object using the taken images. - View Dependent Claims (32, 33, 34, 35, 36)
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37. An apparatus for measuring a plurality of values of a reflectance field of an object comprising:
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a kaleidoscope having an opening; one or more projectors which illuminate at least a portion of the object with light passing through the kaleidoscope; a plurality of cameras dispersed in a staggered arrangement relative to the opening of the kaleidoscope to take images of at least a portion of the surface of the object through the kaleidoscope; and a computer connected to the plurality of cameras for measuring a plurality of values of the reflectance field of the object. - View Dependent Claims (38, 39, 40)
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Specification