Image analysis – Histogram processing – For setting a threshold
Patent
1992-03-17
1994-08-23
Mancuso, Joseph
Image analysis
Histogram processing
For setting a threshold
382 17, 382 43, 348169, G06K 900
Patent
active
053414357
ABSTRACT:
Apparatus for detecting and identifying, by video imagery, an object such as a helicopter, having a characteristic temporal signature containing phase and magnitude information. The object is acquired and the video signals are stored and then temporally filtered by a FFT on a pixel to pixel basis. The magnitude and phase of pixel at a predetermined frequency is determined and compared with periodic frequencies generated by known objects, such as helicopter rotors, to determine if the frequency generated by the object matches any of the known frequencies. Further processing determines the number of blades and directions of rotation of the blades which removes ambiguities from frequency only processing.
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Anderson David R.
Corbett Kenneth A.
Corbett Technology Company, Inc.
Garvin, Jr. John C.
Hilton Harold W.
Klocinski Steven P.
Mancuso Joseph
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