| 摘要 |
<p>A fingerprint recognition and retrieval system in which the positions of fingerprint minutiae points (05) and an index number for each minutiae point (05) are recorded in a storage medium (17). The local ridge flow direction in the vicinity of each minutiae point (05) defined by ridge endings and ridge bifurcations is determined and a generating line (20) is projected at an orthogonal angle to said local ridge flow direction and offset at each ridge ending and ridge bifurcation, respectively. The generating line (20) having a length sufficient to span a predetermined number of ridges to each side of each of the minutiae point (05), respectively.</p> |
