| US 7,502,145 B2 | ||
| Systems and methods for improved line edge quality | ||
| Martin Edward Banton, Fairport, N.Y. (US); and Daniel Fleysher, Pittsford, N.Y. (US) | ||
| Assigned to Xerox Corporation, Norwalk, Conn. (US) | ||
| Filed on Dec. 22, 2004, as Appl. No. 11/18,530. | ||
| Prior Publication US 2006/0132850 A1, Jun. 22, 2006 | ||
| Int. Cl. H04N 1/405 (2006.01) | ||
| U.S. Cl. 358—3.27 [358/3.15] | 19 Claims |
| 1. A method for improving image quality of image data to be rendered, comprising:
processing a first binary bit map of image data to generate a processed binary bit map;
assigning an edge tag to at least one pixel in the processed binary bit map; and
assigning a gray/color value to at least one pixel in the processed binary bit map based on values of corresponding pixels
in the first binary bit map, wherein
processing a first binary bit map of image data to generate a processed binary bit map comprises:
processing the first binary bit map of image data to obtain a second binary bit map that identifies edge pixels of the image
data; and
generating a third binary bit map from the first and second binary bit maps;
assigning an edge tag to at least one pixel in the processed binary bit map comprises:
assigning an edge tag to at least one pixel in the third binary bit map based on a value of at least one corresponding pixel
in the first binary bit map; and
assigning a gray/color value to at least one pixel in the processed binary bit map based on values of corresponding pixels
in the first binary bit map comprises:
assigning a gray/color value to each pixel assigned an edge tag in the third binary bit map based on values of corresponding
pixels in the first binary bit map.
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