Selective thickening of dark features by biased sharpening...

Details Selective thickening of dark features by biased sharpening... Selective thickening of dark features by biased sharpening...

2007-03-20

2007-03-20

Johns, Andrew W. (Department: 2624)

Image analysis

Image enhancement or restoration

Object boundary expansion or contraction

C382S266000, C358S003270

Reexamination Certificate

active

10377476

ABSTRACT:
Processing of a pixel of a digital image includes sharpening a digital image, while boldening dark features in the digital image as a non-decreasing function of local contrast.

REFERENCES:
patent: 5270827 (1993-12-01), Kobayashi et al.
patent: 5524070 (1996-06-01), Shin et al.
patent: 6195467 (2001-02-01), Asimopoulos et al.
patent: 6621595 (2003-09-01), Fan et al.
patent: 6915024 (2005-07-01), Maurer
patent: WO 02/27657 (2002-04-01), None

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