A bisector line field approach to interpolation of orientation fields
This work addresses orientation field reconstruction, particularly for fingerprint analysis, but appears incremental as it builds on existing geometric models.
The authors tackled the problem of globally reconstructing orientation fields by proposing a bisector line field approach, which bypasses the doubling phase step and provides polynomial interpolation, as illustrated with fingerprint analysis examples.
We propose an approach to the problem of global reconstruction of an orientation field. The method is based on a geometric model called "bisector line fields", which maps a pair of vector fields to an orientation field, effectively generalizing the notion of doubling phase vector fields. Endowed with a well chosen energy minimization problem, we provide a polynomial interpolation of a target orientation field while bypassing the doubling phase step. The procedure is then illustrated with examples from fingerprint analysis.