Method and apparatus for input picture enhancement by removal of

Details Method and apparatus for input picture enhancement by removal of Method and apparatus for input picture enhancement by removal of

1985-03-15

1987-02-24

Boudreau, Leo H.

Image analysis

Histogram processing

For setting a threshold

382 49, 358284, G06K 940, H04N 140

Patent

active

046463550

ABSTRACT:
A method and apparatus for removing undesirable dots and voids which are smaller than the user defined smallest data item of a bit-map image of a picture being scanned by a picture coding system. The bit-map is delayed as it is being generated to form a series of tessellations or windows of data of selected sizes. The windows are propagated through a series of neighborhood-logic elements which with the output data level of the outer ring of neighborhood-logic elements which define the window being examined to determine if those data levels are all of the same sense. If they are all of the same sense, then all of the neighborhood-logic elements which define the interior of the window are set or cleared so that the output data levels of all of the neighborhood-logic elements which define the window are of the same sense.

REFERENCES:
patent: 4464789 (1984-08-01), Sternberg
patent: 4506382 (1985-03-01), Hada
patent: 4510616 (1985-04-01), Lougheed
patent: 4510618 (1985-04-01), Ataman et al.
patent: 4589140 (1986-05-01), Bishop

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