Maximum/minimum value conversion circuit for image processing

Details Maximum/minimum value conversion circuit for image processing Maximum/minimum value conversion circuit for image processing

1987-09-21

1989-02-28

Boudreau, Leo H.

Image analysis

Histogram processing

For setting a threshold

382 48, 382 53, G06K 956

Patent

active

048093432

ABSTRACT:
A circuit for processing a maximum value conversion and a minimum value conversion of a digital image data to extract the feature of the image. A range N.times.N of the image data is processed by a simple circuit construction which comprises a horizontal row maximum value selection circuit for selecting the maximum value along N data and N numbers of maximum value selection circuits for comparing N vertical column data with the output data of the horizontal row maximum value selection circuit.

REFERENCES:
patent: 4297676 (1981-10-01), Moriya et al.
patent: 4446486 (1984-05-01), Itoh
patent: 4504969 (1985-03-01), Suzuki et al.
patent: 4630307 (1986-12-01), Cok
patent: 4633327 (1986-12-01), Roetling

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