US Patent 9123116 Multiview face capture using polarized spherical gradient illumination
Patent 9123116 was granted and assigned to University of Southern California on September, 2015 by the United States Patent and Trademark Office.
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A multiview face capture system may acquire detailed facial geometry with high resolution diffuse and specular photometric information from multiple viewpoints. A lighting system may illuminate a face with polarized light from multiple directions. The light may be polarized substantially parallel to a reference axis during a parallel polarization mode of operation and substantially perpendicular to the reference axis during a perpendicular polarization mode of operation. Multiple cameras may each capture an image of the face along a materially different optical axis and have a linear polarizer configured to polarize light traveling along its optical axis in a direction that is substantially parallel to the reference axis. A controller may cause each of the cameras to capture an image of the face while the lighting system is in the parallel polarization mode of operation and again while the lighting system is in the perpendicular polarization mode of operation.
US Patent 09123116 Multiview face capture using polarized spherical gradient illumination US Patent 9123116 Multiview face capture using polarized spherical gradient illumination
US Patent 09123116 Multiview face capture using polarized spherical gradient illumination
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