摘要
目前的中心点定位方法对发生旋转的指纹图像处理效果不佳,针对这一缺陷,结合指纹脊线方向特性和结构特性,提出了一种新的基于指纹方向图的中心点定位方法。在此基础上,改进了文献[1]中的指纹编码方法。实验表明该文提出的方法对旋转的指纹图像具有很强的鲁棒性,匹配精确度比原来的方法有一定的改进。
Locating accurately core-point for fingerprint image plays an important role in the fast and precise fingerprint matchlng.But so far,the existed method cannot search accurately core-point for rotated fingerprint image.A novel method which is based on orientation field and structural feature is presented,on the basis,an improved texture-based fingerprint matching method is presented.The matching method combines the direction features with the AAD features to form an orient FingerCode.The experiment shows that the new method works better than the available method.
出处
《计算机工程与应用》
CSCD
北大核心
2006年第32期180-182,共3页
Computer Engineering and Applications
基金
国家自然科学基金资助项目(60475021)。
关键词
指纹图像
中心点
方向图
旋转
指纹编码
fingerprint image
core-point
orientation field
rotation
FingerCode
