Edge generation method, edge generation device, medium...

Details Edge generation method, edge generation device, medium... Edge generation method, edge generation device, medium...

2004-12-15

2008-12-16

Patel, Kanji (Department: 2624)

Image analysis

Image enhancement or restoration

Edge or contour enhancement

C382S298000

Reexamination Certificate

active

07466871

ABSTRACT:
A direction of an intended edge is determined, and a position of the intended edge is corrected to a position that brings a direction that connects a position of the intended edge and a position of an adjacent edge closer to the determined direction of the intended edge, and edge information representative of an area of the edge of an enlarged image is generated by using the corrected position of the edge. Gradation data before and after filtering are synthesized at a rate corresponding to a feature quantity representative of the amount of pixels within a predetermined color area. The gradation data of the plural pixels within a predetermined region including the position of the intended edge to be sharpened among the interpolated gradation data of the respective pixels on the interpolated image is sharpened at a degree corresponding to the number of pixels of the uninterpolated image.

REFERENCES:
patent: 5257116 (1993-10-01), Suzuki
patent: 6631207 (2003-10-01), Hirota et al.
patent: 6978045 (2005-12-01), Hashimoto et al.
patent: 7054507 (2006-05-01), Bradley et al.
patent: 2004/0081355 (2004-04-01), Takahashi
patent: 3045134 (2000-03-01), None
Abstract of Japanese Patent Publication 11-298721, Pub. Date: Oct. 29, 1999, Patent Abstracts of Japan.

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