Image analysis – Histogram processing – For setting a threshold
Patent
1990-01-22
1991-01-29
Moore, David K.
Image analysis
Histogram processing
For setting a threshold
350 367, 364822, 382 31, G06K 964
Patent
active
049892592
ABSTRACT:
The optical correlator for incoherent light images herein described can be used in real time image processing systems to recognize objects having selected shapes and sizes and to determine their coordinates. The correlator comprises an objective lens means for focussing an image to be processed, means for diverting the light emerging from said objective lens means into two optical paths, a pair of glass image carriers, each located in one of said optical paths at its focal plane to receive one of the focussed images, a pair of transparencies, each located behind one of said image carriers, lenses, each located behind each transparency and a pair of image sensors, each located behind one of said lenses, to provide electrical signals responsive to the position and intensity of the light passing through the image carriers and the transparencies, and an electrical combining circuit adapted to receive the electrical signals from said sensors and provide an output signal proportional to the difference of intensity of the images received by the two sensors.
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Ferrigno Giancarlo
Pedotti Antonio
Fondazione Projuventute Don Carlo Gnocchi
Josif Albert
Mancuso Joseph
Modiano Guido
Moore David K.
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