一种基于手机加速度传感器的三维手势身份认证方法

摘要

Aiming at mobile-phone users’security issues,a gesture identity authentication method based on acceleration sensor is proposed. 3D gesture data are processed by the mean-variance normalization;and the data of the moving gesture are intercepted by using a threshold value to remove interference data;authentication algorithm adopts template matching method. The authenticity of the user can be determined by the average-dynamic time warping( A-DTW)algorithm through comparing reference template with test template. The simulation results show that the proposed algorithm is convenient,feasible and has a good recognition rate.%针对手机用户安全问题，提出一种基于手机加速度传感器的手势身份认证方法。采用均值-方差归一化方式对三维手势数据进行归一化处理；采用门限值方法截取手势动作，去除干扰数据；认证算法采用模板匹配的方式，通过设计的均值-动态时间归整（ A-DTW）算法对参考模板和测试模板进行比较，判断用户的真实性。仿真结果显示：该算法方便可行，具有较高的识别率。