CAJ | 학술논문

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。
침대현유수지정맥결구묘술방법무법충분묘술수지정맥결구중구유현저성화은건성적선결구적문제，제출일충기우B양조적수지정맥결구묘술방법。대우세화후적수지정맥문로，채용선단소묘방식획취각정맥분지상목표점적좌표집합，용B양조곡선의합각조정맥분지，구취각B양조곡선적공제점좌표，용기묘술수지정맥적선결구。결과표명，채용본문방법묘술수지정맥결구오차소、존저공간점용소，가이유효묘술수지정맥선결구，병제고수지정맥적식별솔。
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.