Search Results for author: Wenyuan Xu

Found 11 papers, 3 papers with code

SafeGen: Mitigating Unsafe Content Generation in Text-to-Image Models

1 code implementation10 Apr 2024 Xinfeng Li, Yuchen Yang, Jiangyi Deng, Chen Yan, Yanjiao Chen, Xiaoyu Ji, Wenyuan Xu

The key idea is to eliminate unsafe visual representations from the model regardless of the text input.

CamPro: Camera-based Anti-Facial Recognition

1 code implementation30 Dec 2023 Wenjun Zhu, Yuan Sun, Jiani Liu, Yushi Cheng, Xiaoyu Ji, Wenyuan Xu

The proliferation of images captured from millions of cameras and the advancement of facial recognition (FR) technology have made the abuse of FR a severe privacy threat.

Face Identification Human Detection +1

TPatch: A Triggered Physical Adversarial Patch

1 code implementation30 Dec 2023 Wenjun Zhu, Xiaoyu Ji, Yushi Cheng, Shibo Zhang, Wenyuan Xu

Evaluations with three object detectors, YOLO V3/V5 and Faster R-CNN, and eight image classifiers demonstrate the effectiveness of TPatch in both the simulation and the real world.

Autonomous Vehicles

Catch You and I Can: Revealing Source Voiceprint Against Voice Conversion

no code implementations24 Feb 2023 Jiangyi Deng, Yanjiao Chen, Yinan Zhong, Qianhao Miao, Xueluan Gong, Wenyuan Xu

Voice conversion (VC) techniques can be abused by malicious parties to transform their audios to sound like a target speaker, making it hard for a human being or a speaker verification/identification system to trace the source speaker.

Representation Learning Speaker Verification +1

Private Eye: On the Limits of Textual Screen Peeking via Eyeglass Reflections in Video Conferencing

no code implementations8 May 2022 Yan Long, Chen Yan, Shilin Xiao, Shivan Prasad, Wenyuan Xu, Kevin Fu

Our models and experimental results in a controlled lab setting show it is possible to reconstruct and recognize with over 75% accuracy on-screen texts that have heights as small as 10 mm with a 720p webcam.

4k Multi-Frame Super-Resolution

Rolling Colors: Adversarial Laser Exploits against Traffic Light Recognition

no code implementations6 Apr 2022 Chen Yan, Zhijian Xu, Zhanyuan Yin, Xiaoyu Ji, Wenyuan Xu

By exploiting the rolling shutter of CMOS sensors, we manage to inject a color stripe overlapped on the traffic light in the image, which can cause a red light to be recognized as a green light or vice versa.

Autonomous Driving

FakeWake: Understanding and Mitigating Fake Wake-up Words of Voice Assistants

no code implementations21 Sep 2021 Yanjiao Chen, Yijie Bai, Richard Mitev, Kaibo Wang, Ahmad-Reza Sadeghi, Wenyuan Xu

In the area of Internet of Things (IoT) voice assistants have become an important interface to operate smart speakers, smartphones, and even automobiles.

Tips and Tricks for Webly-Supervised Fine-Grained Recognition: Learning from the WebFG 2020 Challenge

no code implementations29 Dec 2020 Xiu-Shen Wei, Yu-Yan Xu, Yazhou Yao, Jia Wei, Si Xi, Wenyuan Xu, Weidong Zhang, Xiaoxin Lv, Dengpan Fu, Qing Li, Baoying Chen, Haojie Guo, Taolue Xue, Haipeng Jing, Zhiheng Wang, Tianming Zhang, Mingwen Zhang

WebFG 2020 is an international challenge hosted by Nanjing University of Science and Technology, University of Edinburgh, Nanjing University, The University of Adelaide, Waseda University, etc.

Channel Pruning Guided by Spatial and Channel Attention for DNNs in Intelligent Edge Computing

no code implementations8 Nov 2020 Mengran Liu, Weiwei Fang, Xiaodong Ma, Wenyuan Xu, Naixue Xiong, Yi Ding

Guided by the scale values generated by SCA for measuring channel importance, we further propose a new channel pruning approach called Channel Pruning guided by Spatial and Channel Attention (CPSCA).

Edge-computing

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