A novel video-based system for in-air signature verification
A novel video-based system for in-air signature verification
复制标题
一种新颖的基于视频的空中签名验证系统
DOI：
10.1016/j.compeleceng.2016.11.010
复制
发表时间：
2017-01-01
影响因子：
4.3
通讯作者：
Tang, Lei
中科院分区：
文献类型：
--
作者：
Fang, Yuxun;Kang, Wenxiong;Tang, Lei
目前常见的在线签名验证系统均采用在平板电脑或手机屏幕上签名的接触式模式，对设备有很大的依赖性。针对生物识别技术向远距离、非接触方式发展的趋势，提出了一种基于视频的空中签名验证系统。首先，指尖跟踪用于从空中签名视频生成独特的签名轨迹。结合对位改进的动态时间规整(DTW)方法、快速傅立叶变换(FFT)和签名长度分析，提出一种基于高斯分布的空中签名验证融合算法。最后，在由 560 个签名组成的自建数据库上进行了综合实验，得到了 2.86% 的错误拒绝率（FRR）和 1.90% 的错误接受率（FAR），平均匹配时间仅为 24 ms，这证明了我们提出的系统的有效性。 (C) 2016 Elsevier Ltd. 保留所有权利。
At present, the common online signature verification systems adopt the contacted model of signing on a tablet or a phone screen, which have a great dependence on the device. Considering that the development of biometrics tends to the long distance and non-contact mode, a novel video-based system for in-air signature verification is proposed. First, the fingertip tracking is used for generating unique signature trajectory from the in-air signing videos. In combination of contrapuntally improved dynamic time warping (DTW) method, the Fast Fourier Transform (FFT) and the analysis on the signature length, a Gaussian distribution-based fusion algorithm is proposed for in-air signature verification. Finally, comprehensive experiments are conducted on a self-built database consisting of 560 signatures, then a false rejection rate (FRR) of 2.86% and a false acceptance rate (FAR) of 1.90% are achieved with an average matching time of only 24 ms, which have demonstrated the effectiveness of our proposed system. (C) 2016 Elsevier Ltd. All rights reserved.