摘要
针对一类背景分层的指纹图像,提出一种新的指纹图像分割方法分层分割算法.该方法将指纹图像的背景分为两层:外层黑色背景区域和内层浅色背景区域.首先将外层黑色区域的灰度值设定为与内层浅色背景区域相近,这样原指纹图像的背景即变成比较均匀的浅色区域,然后根据其灰度特性将其去除.通过仿真结果可以看出,此种方法分割的效果可靠、精确.
Aiming at a kind of fingerprint image whose background is delaminated, a new algorithm for fingerprint image segmentation is presented. The method divides the background of fingerprint image into two layers: outboard black area and inboard tint area. First of all, the outboard black area was treated by fixing its gray value similar to the inboard tint area, thus the back ground was consistent wit tint area, then according to its gray character, the background was wiped off. The emulation results show that the method is reliable and precious.
出处
《沈阳化工学院学报》
2005年第1期47-49,共3页
Journal of Shenyang Institute of Chemical Technolgy
关键词
指纹
分割
阈值
fingerprint
segmentation
threshold
