Optics: measuring and testing – Refraction testing – Prism engaging specimen
Patent
1976-10-19
1978-07-11
Corbin, John K.
Optics: measuring and testing
Refraction testing
Prism engaging specimen
356 2, 356156, G01B 900, G01B 1100, G01B 1124
Patent
active
040998800
ABSTRACT:
A method and apparatus for stereoscopic measurement of an actual value of depth in a subject through its three-dimensional image obtained from two stereoscopically photographed films by utilizing three factors, that is, the center of optical axis of an X-ray tube or a camera which is indexed from the films at the time of stereoscopic photography, distance of movement from the first photographic point to the second photographic point and distance from the X-ray tube or the lens to the film.
REFERENCES:
patent: 4009961 (1977-03-01), Maruyama
Wertheimer et al., "Rapid Contour Generation", Photo-Grammetric Engineering 1974, pp. 467-478.
Corbin John K.
Drucker William Anthony
Punter Wm. H.
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