Issued Patents 2004
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6757427 | Edge enhancement preprocessing with image region determining function | — | 2004-06-29 |
| 6701022 | Pattern matching coding device and method thereof | Kouichiro Hirao | 2004-03-02 |
| 6690375 | Line segment detector | Shigetaka Ogawa, Koitiro Hirao, Tamotsu Kusaka | 2004-02-10 |