Image analysis – Histogram processing – For setting a threshold
Patent
1990-03-30
1992-09-01
Moore, David K.
Image analysis
Histogram processing
For setting a threshold
382 49, 382 67, 382 68, 2502081, G06K 948
Patent
active
051446847
ABSTRACT:
A parallel image processing apparatus includes (1) a light diffusing layer, (2) a photoelectric conversion layer which receives diffused light from the diffusion layer, and (3) an edge detection layer which receives signals from conversion elements in the conversion layer, and generates edge information which defines the edge of object(s) imaged on the light diffusing layer. The conversion layer includes pairs of conversion elements, the pairs having a center element and a peripheral element surrounding it. Signals from one or more center elements are summed, the sum being differentially amplified with a sum of signals from one or more peripheral elements to arrive at an edge signal. Edge signals may be used to differentiate among characters, pictures or photographs, and a blank images.
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Inada Toshio
Kitabayashi Junichi
Ogura Yukio
Moore David K.
Ricoh & Company, Ltd.
Stellrecht Barry
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