Telegraphy – Systems – Simplex-reversing periodic
Patent
1974-10-17
1976-10-19
Safourek, Benedict V.
Telegraphy
Systems
Simplex-reversing periodic
178 68, 178DIG37, 178DIG36, 358 81, H04N 718
Patent
active
039872416
ABSTRACT:
A system for evaluating members or a family of similar devices by comparing images of a model device to the image of the member to be evaluated is disclosed. An image of the model device is first produced and stored in a memory. An image of the member to be evaluated is produced as the stored image of the model device is simultaneously reproduced. The images of the model and the member being evaluated are compared to generate a comparison signal related to the differences therebetween. The comparison signal is sampled at a predetermined rate, to produce a digital signal indicating sample points where the comparison signal exceeds a predetermined value. Statistical techniques are used to analyze the digital signal to determine which portions of this signal correspond to significant differences between the images of the model device and the member being evaluated. The portions of the digital signals corresponding to significant differences between images of the model and device being evaluated are combined with the image of the device being evaluated to produce a multicolor composite image. In the composite image areas of the image of the device being evaluated which are significantly different from the image of the model device are displayed in red with the remainder of the composite image being green.
REFERENCES:
patent: 3049588 (1962-08-01), Barnett
patent: 3715480 (1973-02-01), Levine
patent: 3823261 (1974-07-01), Bolsey
patent: 3916439 (1975-10-01), Lloyd et al.
Lloyd Raymond A.
Martinez Robert
Ryan Kenneth C.
Coles Edward L.
Hinson J. B.
Safourek Benedict V.
Westinghouse Electric Corporation
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