no code implementations • 14 Jun 2024 • Zhang Chen, Luca Demetrio, Srishti Gupta, Xiaoyi Feng, Zhaoqiang Xia, Antonio Emanuele Cinà, Maura Pintor, Luca Oneto, Ambra Demontis, Battista Biggio, Fabio Roli
Relevant literature has claimed contradictory remarks in support of and against the robustness of over-parameterized networks.
no code implementations • 2 May 2024 • Zixun Jiao, Xihan Wang, Zhaoqiang Xia, Lianhe Shao, Quanli Gao
Reconstructing the hand mesh from one single RGB image is a challenging task because hands are often occluded by other objects.
no code implementations • 13 Sep 2023 • Yang Zheng, Luca Demetrio, Antonio Emanuele Cinà, Xiaoyi Feng, Zhaoqiang Xia, Xiaoyue Jiang, Ambra Demontis, Battista Biggio, Fabio Roli
We empirically show that this defense improves the performances of RGB-D systems against adversarial examples even when they are computed ad-hoc to circumvent this detection mechanism, and that is also more effective than adversarial training.
no code implementations • 26 Aug 2021 • Yang Zheng, Xiaoyi Feng, Zhaoqiang Xia, Xiaoyue Jiang, Ambra Demontis, Maura Pintor, Battista Biggio, Fabio Roli
Adversarial reprogramming allows repurposing a machine-learning model to perform a different task.
1 code implementation • 24 Nov 2020 • Zitong Yu, Xiaobai Li, Jingang Shi, Zhaoqiang Xia, Guoying Zhao
Face anti-spoofing (FAS) plays a vital role in securing face recognition systems from the presentation attacks (PAs).
no code implementations • 30 Jul 2020 • Wei Peng, Jingang Shi, Zhaoqiang Xia, Guoying Zhao
In human action recognition, current works introduce a dynamic graph generation mechanism to better capture the underlying semantic skeleton connections and thus improves the performance.
Ranked #57 on
Skeleton Based Action Recognition
on NTU RGB+D 120
no code implementations • 17 Jun 2020 • Zhaoqiang Xia, Wei Peng, Huai-Qian Khor, Xiaoyi Feng, Guoying Zhao
In this paper, we analyze the influence of learning complexity, including the input complexity and model complexity, and discover that the lower-resolution input data and shallower-architecture model are helpful to ease the degradation of deep models in composite-database task.
Micro Expression Recognition
Micro-Expression Recognition
+1
no code implementations • 27 Mar 2019 • Lei Li, Zhaoqiang Xia, Xiaoyue Jiang, Yupeng Ma, Fabio Roli, Xiaoyi Feng
So, we propose a novel detection method for 3D face mask presentation attack by modeling reflectance differences based on intrinsic image analysis.
no code implementations • 15 Jan 2019 • Zhaoqiang Xia, Xiaopeng Hong, Xingyu Gao, Xiaoyi Feng, Guoying Zhao
To exploit the merits of deep learning, we propose a novel deep recurrent convolutional networks based micro-expression recognition approach, capturing the spatial-temporal deformations of micro-expression sequence.
no code implementations • 31 Oct 2018 • Lei Li, Zhaoqiang Xia, Xiaoyue Jiang, Fabio Roli, Xiaoyi Feng
Face presentation attack detection (PAD) has become a thorny problem for biometric systems and numerous countermeasures have been proposed to address it.
Face Presentation Attack Detection
Generative Adversarial Network
+1
no code implementations • 31 Jan 2016 • Zhaoqiang Xia, Xiaoyi Feng, Jinye Peng, Abdenour Hadid
Learning based hashing plays a pivotal role in large-scale visual search.