Resolution conversion method

Image analysis – Image enhancement or restoration – Edge or contour enhancement

Reexamination Certificate

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Details

C382S276000, C382S298000, C382S300000

Reexamination Certificate

active

07907788

ABSTRACT:
Disclosed is a resolution conversion method, which makes it possible not only to acquire a diagonal edge that is smoothed without causing any unevenness all over the image, but also to stably reproduce a thin line having a thickness corresponding to its original thickness, irrespective of an integer multiple or a non-integer multiple of the magnification factor to be employed for enlarging an original image, when the high-resolution conversion processing is applied to a binary image represented in the dot-matrix format. An operation for integrating the interpolation value with respect to the area of the input pixel is implemented after the output pixel area is shifted in a horizontal direction and/or a vertical direction so as to make the output pixel area depart from a center of the interpolation area, when the output pixel area is included in a single interpolation area in the horizontal direction and/or a vertical direction.

REFERENCES:
patent: 5848198 (1998-12-01), Penn
patent: 6289137 (2001-09-01), Sugiyama et al.
patent: 7010176 (2006-03-01), Kusunoki
patent: 7046862 (2006-05-01), Ishizaka et al.
patent: 7254282 (2007-08-01), Sathyanarayana
patent: 05-040825 (1993-02-01), None
patent: 05-219360 (1993-08-01), None
patent: 2006-270767 (2006-10-01), None

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