摘要
OPTA方法是一个经典的指纹图像细化方法,针对OPTA法的不足提出改进的OPTA方法能够得到完全细化的指纹图像,细化后图像纹线扭曲小。但是改进的OPTA方法还存在细化后的图像容易产生毛刺的不足,为此提出一组改进模板,即在改进的OPTA模板的基础上增加一组去除毛刺的模板。实验表明,通过该算法得到的细化指纹图像在保持连通性的基础上光滑无毛刺,取得了更为理想的细化结果。
OPTA method is a classical thinning method for fingerprint image. Improved OPTA method,which is proposed to overcome the insufficiency of the OPTA method, can obtain a complete thinning result, and can eliminate the distortion of the skeleton. But the improved OPTA thinning algorithm has a deficiency of being easy to get burrs after thinning. To deal with this problem,a set of ameliorative templates is added in this paper. Experimental results show that the new algorithm can not only keep connective, but also keep smooth without burrs. More ideal thinning result is obtained,
出处
《现代电子技术》
2008年第18期143-145,148,共4页
Modern Electronics Technique
基金
国家自然科学基金资助项目(60572133)
关键词
图像处理
细化
模板
毛刺
image processing
thinning
template
burr
