Image analysis – Histogram processing – For setting a threshold
Patent
1988-10-14
1991-05-28
Bovernick, Rodney B.
Image analysis
Histogram processing
For setting a threshold
35016212, 382 46, 382 42, 364822, G06K 946, G02B 2746, G06E 100
Patent
active
050201115
ABSTRACT:
An optical correlation method and apparatus recognizes and locates specific patterns in a scene based on the spatial symmetries associated with that pattern. An input scene is divided into two identical scenes, one of which plays the role of the input scene and the other the role of the filter scene. The filter image is passed through a spatial operator before being sent, along with the input image, to a real-time correlator. The real-time output from the correlator is compared to the input scene. Bright spots or regions in the correlation image represent objects with symmetry. This technique does not depend on comparison of the received image with a standard or stored image, consequently, it overcomes the traditional handicap of sensitivity to both the aspect and range of the viewer.
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Bovernick Rodney B.
Elbaum Saul
Miller Guy M.
Parsons David R.
The United States of America as represented by the Secretary of
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