Method for enhancing raster pixel data

Details Method for enhancing raster pixel data Method for enhancing raster pixel data

1991-12-23

1993-09-28

Mancuso, Joseph

Image analysis

Histogram processing

For setting a threshold

358447, 382 27, G06K 940

Patent

active

052492427

ABSTRACT:
Briefly, the invention provides a method of enhancing pixel data from a raster image to improve the appearance of the rendered image by modifying morphological artifacts which normally occur in raster image systems. The method commences by applying a window to a portion of the raster pixel data from the raster images to define a block of raster pixel data having a predetermined area. The pattern of the block of raster data within the window is then compared with a plurality of predetermined patterns representing morphological artifacts. A determination is made from the comparison whether a substantial match exists between the block of raster data within the window and one or more of the plurality of predetermined patterns. In the event of a match the block of raster data is modified to provide an enhanced block of raster pixel data free of said morphological artifacts. Finally, the window is applied to a different block of raster data and the process is repeated until all of the raster data is free from the undesired morphological artifacts.

REFERENCES:
patent: 4506382 (1985-03-01), Hada et al.
patent: 4630307 (1986-12-01), Cok
patent: 4648119 (1987-03-01), Wingfield et al.
patent: 4742399 (1988-05-01), Kitamura
patent: 4783753 (1988-11-01), Crimmins
patent: 4799270 (1989-01-01), Kim et al.

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