细化指纹上岛屿的判别和滤除

Identification and Elimination of Islands in Thinned Fingerprints

在细化后的指纹图中 ,常常含有像岛屿这样复杂的伪特征结构。因为这种伪特征结构有许多形态 ,所以想发现并去除它们并不很容易。本文提出了一种可以判别所有形态岛屿的方法 ,基于这种方法发展了一种去除这种伪特征的技术。我们将这种技术用于实际的指纹细化后处理中 ,并给出了实验结果。实践证明 。

In a thinned fingerprint,there often exist some complex pseudo structures,such as islands.And this kind of pseudo structures may have several configurations,so its not easy to find and eliminate them.In this paper,we propose an approach in which all kinds of islands can be identified,and based on the approach,a method to eliminate islands is developed.The approach is applied to thinned fingerprints with lots of islands,and experimental results are given.As can be seen,this approach is effective.