| US 7,536,052 B2 | ||
| Corner sharpening of text and line art in a super resolution anti-aliasing image path | ||
| Eli S. Saber, Webster, N.Y. (US); and Robert P. Loce, Webster, N.Y. (US) | ||
| Assigned to Xerox Corporation, Norwalk, Conn. (US) | ||
| Filed on Dec. 15, 2003, as Appl. No. 10/736,822. | ||
| Prior Publication US 2005/0129328 A1, Jun. 16, 2005 | ||
| Int. Cl. G06K 9/62 (2006.01); G06K 9/40 (2006.01) | ||
| U.S. Cl. 382—209 [382/225; 382/263; 382/266; 382/269] | 22 Claims |
| 1. A method of corner sharpening in the display of a bitmapped digital image, comprising:
rasterizing a digital image to produce a super resolution digital image;
identifying pixel locations about a corner structure in the super resolution digital image;
substituting pixel values in the identified pixel locations to achieve a clustering of the substituted pixel values about
the corner structure producing a corner-enhanced digital image;
filtering and sampling according to an anti-alias operation to said corner-enhanced image to produce an anti-aliased corner
enhanced image; and,
rendering said anti-aliased corner enhanced image.
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