摘要
提出了一种新的带阻滤波二值化处理方法。首先,用带阻滤波和高斯低通滤波算法分别处理原始图像;然后,在高斯低通滤波图像中,用区域增长方法提取指纹的轮廓;最后,用轮廓线对带阻滤波指纹图像进行背景填充,把二值化处理限定在纹线区域内。通过实验证明,提出的二值化处理方法可以有效解决二值化处理方法中指纹的特征点丢失问题。
This article proposed one new fingerprint image band-elimination filter binarization processing method. Firstly, using band-elimination filter algorithm and the Gaussian low-pass filter algorithm processing the original image respectively. And then using region growth algorithm to extract the contour of fingerprint in Gaussian low-pass filter image. Finally, the contour was used to fill the background region of the image filtered by band-elimination filter, and binary processing the foreground in the contour regions. Confirmed through the experiment, this article proposed the binarization processing method that can solve the fingerprint characteristic points lose question availably in binarization processing method.
出处
《计算机应用研究》
CSCD
北大核心
2007年第9期284-286,289,共4页
Application Research of Computers
基金
国家自然科学基金(60175001)
关键词
指纹
带阻滤波
区域增长
二值化
fingerprint
band-elimination filter
region growing
binarization
