Optics: measuring and testing – By polarized light examination – With light attenuation
Patent
1987-06-02
1989-04-25
Tarcza, Thomas H.
Optics: measuring and testing
By polarized light examination
With light attenuation
G01B 1124
Patent
active
048252638
ABSTRACT:
A method of optically mapping a person's face includes the steps of illuminating the face through a grid structure to produce a grid representation on the face; viewing the illuminated face with a video camera; producing a video signal in response to the step of viewing; converting the video signal to digital form; storing a frame of the digitized video signal in a frame memory; defining the grid representation on the face, from the stored video signal; locating coordinates of the intersection points of the grid representation; determining curvatures of the grid representation at the located intersection points; and three-dimensionally reconstructing the surface of the face from the coordinates and curvatures of the intersection points.
REFERENCES:
patent: 3762818 (1973-10-01), Johnson et al.
patent: 3814521 (1974-06-01), Free
patent: 3952150 (1976-04-01), Gerardia et al.
patent: 4644583 (1987-02-01), Watanabe et al.
patent: 4657394 (1987-04-01), Haliova
Desjardins Paul J.
Dunn Stanley M.
Milles Maano
Lobo Ian J.
Rutgers University
Tarcza Thomas H.
University of Medicine & Dentistry of New Jersey
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