Optics: measuring and testing – Inspection of flaws or impurities – Having predetermined light transmission regions
Patent
1976-04-12
1977-05-17
Corbin, John K.
Optics: measuring and testing
Inspection of flaws or impurities
Having predetermined light transmission regions
350132, 50144, 350320, 356244, G01N 2160
Patent
active
040239110
ABSTRACT:
Random dot stereograms are used as stereopsis test targets to align stereomicroscopes in a technique for inspecting three-dimensonal objects. The random dot stereograms are computed and mounted on a holder such that they simulate inspection conditions of the three-dimensional object being inspected. The appearance of a pattern in depth on the random dot stereograms is an objective test as to whether the microscope has been adjusted properly by the inspector. In addition, random dot stereograms can also be used to (1) screen inspectors for stereodeficiencies, (2) facilitate the training of inspectors, and (3) monitor inspection rate control and fatigue of inspectors during inspection.
REFERENCES:
patent: 2674156 (1954-04-01), Mahler
Julesz, Foundations of Cyclopean Perception; University of Chicago Press; pp. 89-91, 198-201, 270, 285-289, 249, 315; 1971.
Julesz, "Binocular Depth Perception of Computer Generatal Patterns", Bell System Tech. J., vol. 39, pp. 1125-1162, 1960.
Julesz Bela
Kerns Becky Thomas
Terry Milton Everett
Bell Telephone Laboratories Incorporated
Corbin John K.
Koren Matthew W.
Urbano Michael J.
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