摘要
深入研究改进的OPTA细化算法,针对已有算法中存在细化后毛刺较多的问题,提出了一个新的改进OPTA细化算法。该算法在原有细化算法的基础上,根据纹线角度和弯曲方向的不同采用不同的细化顺序,并修改了消除模板,改进了保留模板的去除情况。大量实验表明,该算法在继承原有算法优点的基础上显著地减少了细化后的毛刺,是一种较为理想的细化算法。
The improved OPTA thinning algorithm for fingerprint images was studied deeply. A new improved OPTA thinning algorithm was proposed to solve the problem that there is much spur in the after-thinning fingerprint images. In the new algorithm, various thinning orders were used for various line-angle and curve-direction, the remove templates were modified, and the reserve templates were improved. Through lots of experiments, the algorithm has been proved to be a better thinning algorithm, which inherits the advantages and can significantly reduce the spur in the thinning process.
出处
《计算机应用》
CSCD
北大核心
2008年第10期2639-2642,共4页
journal of Computer Applications
关键词
指纹
细化
模板
二值化
毛刺
fingerprint
thinning
template
binarization
spur
