Reducing edge artifacts on a digital printer

Details Reducing edge artifacts on a digital printer Reducing edge artifacts on a digital printer

1996-07-24

1999-05-11

Couso, Jose L.

Image analysis

Image enhancement or restoration

Edge or contour enhancement

382268, G06K9/40

Patent

active

059036818

ABSTRACT:
An arrangment is disclosed for reducing edge artifacts produced when printing a digital image on a digital printer, which printer is capable of producing multiple output levels, said digital image being represented as a rectangular array of pixels. In this arrangement, the following steps are accomplished by: computing difference signals between a center pixel value and pixel values of a set of one or more neighboring pixels; determining a pixel correction value responsive to the computed difference signals; and computing a new center pixel value by modifying the center pixel value using the pixel correction value.

REFERENCES:
patent: 4941190 (1990-07-01), Joyce
patent: 5319391 (1994-06-01), Takahashi et al.
patent: 5390264 (1995-02-01), Ishihara et al.
patent: 5710840 (1998-01-01), Hideshima et al.

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