摘要
提出一种基于方向图的、具有动态阈值的指纹图像二值化方法 .该方法充分利用了指纹图像本身方向和灰度变化的特点 ,在保持指纹特征基本不丢失的情况下 ,可直接从指纹源图像中得到二值化图像 ,一次性完成一般图像处理中的平滑、增强、二值化的过程 .实验表明 。
A new binarization method of fingerprint images is proposed, which is based on the orientation and the dynamic threshold, and it has the excellent capability of noise resistance. This method makes full use of the orientation and the characteristics of grayscale change, gets the binarized images from the primitive fingerprint images directly, instead of the series of processing such as smoothness, enhancement and binarization. Experimental results show that this algorithm can retain the majority of minutiae and can be applied to the images which have different qualities.
出处
《大连理工大学学报》
CAS
CSCD
北大核心
2002年第5期626-628,共3页
Journal of Dalian University of Technology
