Ridge-flow determination in fingerprint images

James H. Beyer; Charles D. Lake; Robert M. Lougheed

doi:10.1117/12.169476

25 February 1994 Ridge-flow determination in fingerprint images

James H. Beyer, Charles D. Lake, Robert M. Lougheed

Proceedings Volume 2103, 22nd AIPR Workshop: Interdisciplinary Computer Vision: Applications and Changing Needs; (1994) https://doi.org/10.1117/12.169476
Event: 22nd Applied Imagery Pattern Recognition Workshop, 1993, Washington, DC, United States

Abstract

The paper describes how, given a ridge-and-valley image of a fingerprint, a flow map can be extracted. The first step is a unique grayscale algorithm based on 3D mathematical morphology to extract the ridge lines under a wide range of conditions. The paper then compares the results of finding the ridge flow using micropatterns, extended templates (on binary and grayscale images), and several well-known, traditional techniques. The question of spatial resolution is also addressed.

Citation Download Citation

James H. Beyer, Charles D. Lake, and Robert M. Lougheed "Ridge-flow determination in fingerprint images", Proc. SPIE 2103, 22nd AIPR Workshop: Interdisciplinary Computer Vision: Applications and Changing Needs, (25 February 1994); https://doi.org/10.1117/12.169476

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