| US 7,480,409 B2 | ||
| Degraded character image generation method and apparatus | ||
| Sun Jun, Beijing (China); Yutaka Katsuyama, Kawasaki (Japan); and Satoshi Naoi, Kawasaki (Japan) | ||
| Assigned to Fujitsu Limited, Kawasaki (Japan) | ||
| Filed on Aug. 10, 2005, as Appl. No. 11/200,202. | ||
| Claims priority of application No. 2004 1 0058171 (CN), filed on Aug. 13, 2004. | ||
| Prior Publication US 2006/0056697 A1, Mar. 16, 2006 | ||
| Int. Cl. G06K 9/34 (2006.01); G06K 9/32 (2006.01); G06K 9/62 (2006.01) | ||
| U.S. Cl. 382—176 [382/295] | 12 Claims |
| 1. A method for generating a degraded character image at various levels of degradation, comprising:
rendering a character image on a scene plane;
translating and rotating the scene plane according to a first set of various parameters;
determining a projection region of the character image on an image plane according to a second set of various parameters;
generating a pixel region mask; and
generating a final degraded image by super-sampling.
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