Issued Patents 2003
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6580820 | Digital imaging method and apparatus for detection of document security marks | — | 2003-06-17 |
| 6574366 | Line and curve detection using local information | — | 2003-06-03 |
| 6542629 | Digital imaging method and apparatus for detection of document security marks | John W. Wu, Mike Chien-Fang Chen, Kien A. Phong | 2003-04-01 |
| 6529291 | Fuzzy black color conversion using weighted outputs and matched tables | Stuart A. Schweid, Jeng-Nan Shiau | 2003-03-04 |
| 6515764 | Method and apparatus for detecting photocopier tracking signatures | Keith T. Knox, Erie J. Schneider | 2003-02-04 |