Image processor with edge emphasis of image data

Details Image processor with edge emphasis of image data Image processor with edge emphasis of image data

1994-08-16

1997-09-09

Rogers, Scott A.

Image analysis

Image enhancement or restoration

Edge or contour enhancement

382275, 358447, 358463, G06T 500, H04N 1409

Patent

active

056664435

ABSTRACT:
Image data of an original image in a prescribed pixel matrix is subjected to edge emphasis. On the other hand, a maximum and a minimum of the image data are detected. Then, values of the image data subjected to edge emphasis are limited between the maximum and the minimum to provide output data. Thus, edge emphasis can be performed without increasing noises even for hand-written characters of low densities.

REFERENCES:
patent: 4786976 (1988-11-01), Takao et al.
patent: 5060284 (1991-10-01), Klees
patent: 5166810 (1992-11-01), Sorimachi et al.
patent: 5231677 (1993-07-01), Mita et al.
patent: 5262863 (1993-11-01), Okada
patent: 5357353 (1994-10-01), Hirota

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