Image analysis – Applications – 3-d or stereo imaging analysis
Patent
1997-04-25
1999-01-05
Johns, Andrew W.
Image analysis
Applications
3-d or stereo imaging analysis
382193, 345425, G06K 946, G06K 966, G09G 500
Patent
active
058570322
ABSTRACT:
This invention discloses a system and method for measuring and monitoring three-dimensional shaped objects with projections of computer models of the objects. The computer models of the three-dimensional shaped objects are in the form of grid patterns. An image of the computer model of grid patterns is simultaneously projected from a dual projection system in two directions onto a real world instance of the object. Any variation between the computer model and the real world instance of the object is highlighted directly on the object by interference patterns of the two projections on the real world instance. The variation is quantified by counting the number of interference patterns on the real world instance of the object.
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patent: 5531520 (1996-07-01), Grimson et al.
patent: 5687305 (1997-11-01), Graham et al.
"Optical Methods" by CA Walker, et al, Non-Destructive Testing of Fiber-reinforced Plastic Composites, by J. Summercodes, vol. 1, 1987, pp. 112-117.
"Encoded Moire Inspection Based on a Computer Solid Model" by J. Nurre, et al, IEEE Trans on Pattern Analysis and Machine Intelligence, vol. 14, No. 12, Dec. 1992, pp. 1214-1218.
"Computer Generated Moire Interferometry" by K. Ryan, et al, IEEE 1992, pp. 1193-1199.
Graham Michael Evans
Hinds John Knox
Nelson Garth M.
Wang Weiping
Davis Monica S.
General Electric Company
Goldman David C.
Johns Andrew W.
Snyder Marvin
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