Neighborhood comparison operator

Details Neighborhood comparison operator Neighborhood comparison operator

1985-12-31

1987-10-27

Boudreau, Leo H.

Image analysis

Histogram processing

For setting a threshold

382 49, G06K 946

Patent

active

047035137

ABSTRACT:
Digital values in a moving window are compared by an operator having nine comparators (18) connected to line buffers (16) for receiving a succession of central pixels together with eight neighborhood pixels. A single bit of program control determines whether the neighborhood pixels are to be compared with the central pixel or a threshold value. The central pixel is always compared with the threshold. The comparator output, plus 2 bits indicating odd-even pixel/line information about the central pixel, addresses a lookup table (20) to provide 14 bits of information, including 2 bits which control a selector (22) to pass either the central pixel value, the other 12 bits of table information, or the bit-wise logic OR of all neighboring pixels.

REFERENCES:
patent: 4003024 (1977-01-01), Riganati et al.
patent: 4389677 (1983-06-01), Rushby et al.
patent: 4395698 (1983-07-01), Sternberg et al.
patent: 4450483 (1984-05-01), Coviello
patent: 4464788 (1984-08-01), Sternberg et al.
patent: 4506382 (1985-03-01), Hada et al.
patent: 4541116 (1985-09-01), Lougheed

Affiliated with

Also associated with

Rating

Neighborhood comparison operator does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Neighborhood comparison operator, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Neighborhood comparison operator will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1276938