arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1608.05461cs.CV
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我们可以通过Wi-Fi“看到”您-通过基于视觉的方法进行WiFi动作识别

We Can "See" You via Wi-Fi - WiFi Action Recognition via Vision-based Methods

National Taiwan University(台湾大学);National Chiao Tung University(台湾交通大学)

Jen-Yin Chang, Kuan-Ying Lee, Yu-Lin Wei, Kate Ching-Ju Lin, Winston Hsu

摘要:

最近,Wi-Fi因其无处不在而引起了极大的关注,并且,受Wi-Fi的低成本和隐私保护的激励,研究人员一直在对其在动作识别甚至个人身份识别方面的潜力进行大量研究。在本文中,我们对Wi-Fi中的这两个主题进行了全面的概述。此外,通过从前所未有的角度看待这两个主题,我们可以实现通用性,而不是为每个场景设计特定的ad-hoc功能。鉴于信道状态信息(CSI,从接收到的Wi-Fi信号中获取的细粒度信息)与纹理的高度相似性,提出了一种全新的基于计算机视觉方法的纹理检测框架。为了最大限度地减少CSI中位置相关性的影响,提出了一种基于奇异值分解(SVD)的去噪方法,以消除背景能量,有效地提取人体反射信号的信道信息。从实验中,我们证明了所提出的方法的可行性和有效性。此外,我们总结了影响性能的因素,并强调了一些有前途的问题,需要进一步审议。

英文摘要:

Recently, Wi-Fi has caught tremendous attention for its ubiquity, and, motivated by Wi-Fi's low cost and privacy preservation, researchers have been putting lots of investigation into its potential on action recognition and even person identification. In this paper, we offer an comprehensive overview on these two topics in Wi-Fi. Also, through looking at these two topics from an unprecedented perspective, we could achieve generality instead of designing specific ad-hoc features for each scenario. Observing the great resemblance of Channel State Information (CSI, a fine-grained information captured from the received Wi-Fi signal) to texture, we proposed a brand-new framework based on computer vision methods. To minimize the effect of location dependency embedded in CSI, we propose a novel de-noising method based on Singular Value Decomposition (SVD) to eliminate the background energy and effectively extract the channel information of signals reflected by human bodies. From the experiments conducted, we demonstrate the feasibility and efficacy of the proposed methods. Also, we conclude factors that would affect the performance and highlight a few promising issues that require further deliberation.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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