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Received:January 29, 2019 Revised:February 27, 2019
Received:January 29, 2019 Revised:February 27, 2019
中文摘要: 针对DTW算法在手势身份认证中存在的问题，提出了一种基于约束多维DTW算法（Constraints Multi-dimension Dynamic Time Wrapping，CM-DTW）的智能手机动态手势身份认证方法.该方法利用手机内置传感器获取代表用户生物行为特征的手势数据，通过Sakoe-Chiba窗约束下的DTW算法选择合法用户的候选模板集，采用线性升降采样归一化候选模板得到一个标准模板.该方法与DTW算法相比，不仅提高了身份认证的时间效率，并且保证了用户身份认证的准确率.
Abstract:Aiming at the problems of DTW algorithm in gesture authentication, the dynamic gesture authentication method for smartphones based on CM-DTW (Constraints Multi-dimensional Dynamic Time Wrapping) is proposed. The method uses smartphone built-in sensors to obtain gesture data which representing users' biological behavior characteristics. The candidate template set of legitimate users is selected by DTW algorithm with Sakoe-Chiba window constraints, and a standard template is obtained by normalizing the candidate template with linear up-down sampling. Compared with DTW algorithm, the proposed method not only improves the time efficiency of user identity authentica-tion but also maintains the accuracy.
keywords: DTW algorithm identity authentication biological behavior characteristics standard template dynamic gesture
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基金项目:国家自然科学基金海峡联合项目（U1405255）；福州市科技重大项目（榕科（2017）325号）；福建省教育厅中青年科研项目（JZ180628）
引用文本：
李翔宇,许力,李瑞兴.基于CM-DTW算法的智能手机动态手势身份认证.计算机系统应用,2019,28(8):17-23
LI Xiang-Yu,XU Li,LI Rui-Xing.Dynamic Gesture Identity Authentication of Smart Phone Based on CM-DTW Algorithms.COMPUTER SYSTEMS APPLICATIONS,2019,28(8):17-23
李翔宇,许力,李瑞兴.基于CM-DTW算法的智能手机动态手势身份认证.计算机系统应用,2019,28(8):17-23
LI Xiang-Yu,XU Li,LI Rui-Xing.Dynamic Gesture Identity Authentication of Smart Phone Based on CM-DTW Algorithms.COMPUTER SYSTEMS APPLICATIONS,2019,28(8):17-23
