矢量点积在指纹方向图平滑中的应用  

Application of Vector Dot-product in Fingerprint Orientation Enhancement

作　　者：李虎[1] 徐晓铁[2] 

机构地区：[1]解放军理工大学通信工程学院训练部,江苏南京210007 [2]解放军理工大学通信工程学院院务部,江苏南京210007

出　　处：《军事通信技术》2006年第3期24-26,共3页Journal of Military Communications Technology

摘　　要：块方向图增强是指纹图像预处理过程中很关键的一个步骤。针对块方向图平滑计算过程中运算量过大的问题,文中提出了一种块方向图计算方法,引入矢量点积,通过若干步整数四则运算,较快速地得到块方向图。文中详细介绍了该方法的理论依据,通过程序仿真,对这种计算方法的效果进行了检验。Block orientation enhancement is a very essential step in fingerprint image pretreatment process. In view of the operand oversized problem block orientation smooth computation process, a new block orientation calculating technology was presented. With vector dotproduct and through certain steps of integers mathematical operations, block orientation could be obtained rapidly. The basis of the theory of the algorithm was introduced in detail. The program simulation proves the validity of this algorithm.

关 键 词：指纹图像 方向图增强 矢量点积 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术]