Fingerprint Orientation Estimation Based on Morphological Operation
一种基于形态学运算的指纹方向场计算方法

Fingerprint recognition is one of the most popular methods for biometric authentication. In the process of rc cognition, the ridge orientation estimation is the most important step, since it serves for segmentation, enhancement, mi- nutiae extraction and matching. We proposed a method for orientation estimation based on morphological operation to regulate the orientation field. The experience shows that this method can correctly and robustly estimate the fingerprint orientation field for low cauality images, especially for those with creases.