| 引用本文: | 刘通,谢剑斌,华宏虎,等.手指静脉结构的B样条描述方法.[J].国防科技大学学报,2014,36(5):93-97.[点击复制] |
| LIU Tong,XIE Jianbin,HUA Honghu,et al.Finger-vein structure description method with B-spline[J].Journal of National University of Defense Technology,2014,36(5):93-97[点击复制] |
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| 手指静脉结构的B样条描述方法 |
| 刘通, 谢剑斌, 华宏虎, 闫玮, 卢焕章 |
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(国防科技大学 电子科学与工程学院， 湖南 长沙 410073)
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| 摘要: |
| 针对现有手指静脉结构描述方法无法充分描述手指静脉结构中具有显著性和稳健性的线结构的问题，提出一种基于B样条的手指静脉结构描述方法。对于细化后的手指静脉纹路，采用线段扫描方式获取各静脉分支上目标点的坐标集合，用B样条曲线拟合各条静脉分支，求取各B样条曲线的控制点坐标，用其描述手指静脉的线结构。结果表明，采用本文方法描述手指静脉结构误差小、存储空间占用小，可以有效描述手指静脉线结构，并提高手指静脉的识别率。 |
| 关键词: 手指静脉识别 身份认证 生物特征 B样条 |
| DOI：10.11887/j.cn.201405016 |
| 投稿日期：2014-03-16 |
| 基金项目:国家自然科学基金资助项目（61303188） |
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| Finger-vein structure description method with B-spline |
| LIU Tong, XIE Jianbin, HUA Honghu, YAN Wei, LU Huanzhang |
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(College of Electronic Science and Engineering, National University of Defense Technology,Changsha 410073, China)
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| Abstract: |
| The conventional methods for finger-vein structure description could not fully describe the distinct and steady line-structures of finger-vein. Therefore, a finger-vein structure description method based on B-spline was proposed. The new method obtained the coordinate set of all target points on every finger-vein branch by using line scanning operation on thinned finger-vein images. A B-spline function was used to fit the curves of finger-vein branches. The control-point coordinates of every B-spline curve were gained, and they were used to describe the line-structures of finger-vein. Experiments show that the new method can availably describe line-structures of finger-vein with little description error and small storage space requirements. Furthermore, this method can improve the recognition rates of finger-vein. |
| Keywords: finger-vein recognition personal identification biometric features B-spline |
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