A Novel Algorithm for Detecting Singular Points From Fingerprint Images

Date Added: Jul 2009
Format: PDF

Fingerprint analysis is typically based on the location and pattern of detected singular points in the images. These singular points (cores and deltas) not only represent the characteristics of local ridge patterns but also determine the topological structure (i.e., fingerprint type) and largely influence the orientation field. In this paper, the authors propose a novel algorithm for singular points detection. After an initial detection using the conventional Poincare? Index method, a so-called DORIC feature is used to remove spurious singular points. Then, the optimal combination of singular points is selected to minimize the difference between the original orientation field and the model-based orientation field reconstructed using the singular points.