Method and apparatus for improving the display of greys in a two

Details Method and apparatus for improving the display of greys in a two Method and apparatus for improving the display of greys in a two

1994-04-22

1996-07-02

Mancuso, Joseph

Image analysis

Image enhancement or restoration

Artifact removal or suppression

358459, 358447, H04N 140

Patent

active

055331505

ABSTRACT:
A method and associated apparatus for enhancing the display or print of greys in a two-tone digitized image consisting of storing a portion of a binary image map including a central bit under examination to be displayed and in testing if the said central bit is representative of an isolated dot or whether in a region around the said central bit in one of a plurality of predetermined directions there is an isolated dot at a predetermined distance from the said central bit, to display the central bit as a dot of reduced dimensions in such a way as to convert the display of an isolated dot in the display into a plurality of smaller dots with aggregate areas equivalent to the isolated dot and distributed around the location of the isolated dot identified from the image map.

REFERENCES:
patent: 4646355 (1987-02-01), Petrick et al.
patent: 4847641 (1989-07-01), Tung
patent: 5249242 (1993-09-01), Hanson et al.

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