Author

Yongzhao Zhang

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Preprint Aug 2026

UiAs: User-Independent 3D Facial Anti-Spoofing via Multi-modal Wireless Signals

Face authentication is widely deployed in security-sensitive applications, while increasingly realistic 3D spoofing attacks pose growing threats. High-fidelity 3D masks can reproduce facial appearance and geometry but cannot replicate the intrinsic physical responses of living tissue, which can be actively probed by wi...

Zhiwei Chen, Lebin Lyu, Yi-Mo Zhang et al. · 0 citations

Sep 2026

Acoustic-URL: Multisignal-Domain and Multichannel Fusion for Unsupervised Representation Learning in Acoustic Sensing

The proliferation of multimicrophone IoT devices—such as smartphones, smart speakers, and wearables—has enabled diverse acoustic sensing applications. However, scarcely labeled data and poor cross-task transferability continue to limit traditional supervised methods. To address this, we propose acoustic-URL, an unsuper...

Bingzhi Wang, Yongzhao Zhang, Jia-Jun Yu et al. · IEEE Internet of Things Jour... · 1 citation