Neighborhood image processing stage for implementing filtering o

Details Neighborhood image processing stage for implementing filtering o Neighborhood image processing stage for implementing filtering o

1984-02-27

1985-09-10

Boudreau, Leo H.

Image analysis

Histogram processing

For setting a threshold

382 54, G06K 936

Patent

active

045411166

ABSTRACT:
A neighborhood transformation stage is designed to perform filtering operations on an image matrix. A group of pixel values in the image matrix are accessed. A series of comparators are used to compare the values of neighboring pixels with the value of a given pixel in the group. The outputs of the comparators are combined to form a vector to address a programmable look-up table. The addressed output of the look-up table is used as a control signal for a selector which either maintains the value of the given pixel or transforms it into another value associated with a neighboring pixel whose value has been ranked in a predetermined order by a rank sorter device used to compare the values of the neighboring pixels with each other.

REFERENCES:
patent: 3737855 (1973-06-01), Cutaia
patent: 4003024 (1977-01-01), Riganati et al.
patent: 4464788 (1984-08-01), Sternberg et al.

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