no code implementations • 9 Mar 2024 • Puneet Kumar, Alexander Vedernikov, Xiaobai Li
This survey is the first to simultaneously explore computational methods for analyzing stress, depression, and engagement.
1 code implementation • 12 Feb 2024 • Puneet Kumar, Sarthak Malik, Balasubramanian Raman, Xiaobai Li
It implements an interpretability technique to analyze the contribution of textual and visual features during the generation of uncontrolled and controlled feedback.
1 code implementation • 13 Sep 2023 • Zhaodong Sun, Xiaobai Li
In this paper, we propose Contrast-Phys+, a method that can be trained in both unsupervised and weakly-supervised settings.
no code implementations • 5 Jun 2023 • Puneet Kumar, Xiaobai Li
This paper aims to demonstrate the importance and feasibility of fusing multimodal information for emotion recognition.
1 code implementation • 24 Aug 2022 • Puneet Kumar, Sarthak Malik, Balasubramanian Raman, Xiaobai Li
This paper proposes a multimodal emotion recognition system, VIsual Spoken Textual Additive Net (VISTA Net), to classify emotions reflected by multimodal input containing image, speech, and text into discrete classes.
1 code implementation • 8 Aug 2022 • Zhaodong Sun, Xiaobai Li
However, supervised rPPG methods require face videos and ground truth physiological signals for model training.
no code implementations • 21 Dec 2021 • Zitong Yu, Jukka Komulainen, Xiaobai Li, Guoying Zhao
Face presentation attack detection (PAD) has received increasing attention ever since the vulnerabilities to spoofing have been widely recognized.
no code implementations • 14 Oct 2021 • Zhaodong Sun, Juhani Junttila, Mikko Tulppo, Tapio Seppänen, Xiaobai Li
Results: Our proposed method can accurately extract systolic peaks from face videos for AF detection.
1 code implementation • CVPR 2021 • Xin Liu, Henglin Shi, Haoyu Chen, Zitong Yu, Xiaobai Li, Guoying Zhaoz?
We introduce a new dataset for the emotional artificial intelligence research: identity-free video dataset for Micro-Gesture Understanding and Emotion analysis (iMiGUE).
2 code implementations • 28 Jun 2021 • Zitong Yu, Yunxiao Qin, Xiaobai Li, Chenxu Zhao, Zhen Lei, Guoying Zhao
Face anti-spoofing (FAS) has lately attracted increasing attention due to its vital role in securing face recognition systems from presentation attacks (PAs).
1 code implementation • 4 May 2021 • Zitong Yu, Yunxiao Qin, Hengshuang Zhao, Xiaobai Li, Guoying Zhao
In this paper, we propose two Cross Central Difference Convolutions (C-CDC), which exploit the difference of the center and surround sparse local features from the horizontal/vertical and diagonal directions, respectively.
no code implementations • 15 Apr 2021 • Zitong Yu, Xiaobai Li, Pichao Wang, Guoying Zhao
3D mask face presentation attack detection (PAD) plays a vital role in securing face recognition systems from emergent 3D mask attacks.
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 • 3 Nov 2020 • Zitong Yu, Jun Wan, Yunxiao Qin, Xiaobai Li, Stan Z. Li, Guoying Zhao
Face anti-spoofing (FAS) plays a vital role in securing face recognition systems.
no code implementations • 24 Jul 2020 • Thuong-Khanh Tran, Quang-Nhat Vo, Xiaopeng Hong, Xiaobai Li, Guoying Zhao
Micro-expressions (MEs) are brief and involuntary facial expressions that occur when people are trying to hide their true feelings or conceal their emotions.
1 code implementation • ECCV 2020 • Xuesong Niu, Zitong Yu, Hu Han, Xiaobai Li, Shiguang Shan, Guoying Zhao
Remote physiological measurements, e. g., remote photoplethysmography (rPPG) based heart rate (HR), heart rate variability (HRV) and respiration frequency (RF) measuring, are playing more and more important roles under the application scenarios where contact measurement is inconvenient or impossible.
no code implementations • ECCV 2020 • Zitong Yu, Xiaobai Li, Xuesong Niu, Jingang Shi, Guoying Zhao
In this paper we rephrase face anti-spoofing as a material recognition problem and combine it with classical human material perception [1], intending to extract discriminative and robust features for FAS.
no code implementations • 26 Apr 2020 • Zitong Yu, Xiaobai Li, Xuesong Niu, Jingang Shi, Guoying Zhao
Remote photoplethysmography (rPPG), which aims at measuring heart activities without any contact, has great potential in many applications (e. g., remote healthcare).
1 code implementation • 17 Apr 2020 • Zitong Yu, Yunxiao Qin, Xiaobai Li, Zezheng Wang, Chenxu Zhao, Zhen Lei, Guoying Zhao
Face anti-spoofing (FAS) plays a vital role in securing face recognition systems from presentation attacks.
no code implementations • 26 Mar 2020 • Xiaobai Li, Hu Han, Hao Lu, Xuesong Niu, Zitong Yu, Antitza Dantcheva, Guoying Zhao, Shiguang Shan
Remote measurement of physiological signals from videos is an emerging topic.
4 code implementations • CVPR 2020 • Zitong Yu, Chenxu Zhao, Zezheng Wang, Yunxiao Qin, Zhuo Su, Xiaobai Li, Feng Zhou, Guoying Zhao
Here we propose a novel frame level FAS method based on Central Difference Convolution (CDC), which is able to capture intrinsic detailed patterns via aggregating both intensity and gradient information.
Ranked #4 on Face Anti-Spoofing on OULU-NPU
no code implementations • 12 Feb 2020 • Mohammad Sabokrou, Masoud Pourreza, Xiaobai Li, Mahmood Fathy, Guoying Zhao
In this paper, we propose a simple yet efficient approach to benefit the advantages of the Deep Neural Network (DNN) by simplifying HR estimation from a complex task to learning from very correlated representation to HR.
no code implementations • 8 Feb 2020 • Muzammil Behzad, Nhat Vo, Xiaobai Li, Guoying Zhao
Importantly, we then present a sparsity-aware deep network to compute the sparse representations of convolutional features over multi-views.
Facial Expression Recognition Facial Expression Recognition (FER)
no code implementations • 11 Oct 2019 • Muzammil Behzad, Nhat Vo, Xiaobai Li, Guoying Zhao
We propose a novel landmarks-assisted collaborative end-to-end deep framework for automatic 4D FER.
Facial Expression Recognition Facial Expression Recognition (FER)
2 code implementations • ICCV 2019 • Zitong Yu, Wei Peng, Xiaobai Li, Xiaopeng Hong, Guoying Zhao
The method includes two parts: 1) a Spatio-Temporal Video Enhancement Network (STVEN) for video enhancement, and 2) an rPPG network (rPPGNet) for rPPG signal recovery.
Heart rate estimation Photoplethysmography (PPG) heart rate estimation +2
2 code implementations • 7 May 2019 • Zitong Yu, Xiaobai Li, Guoying Zhao
Recent studies demonstrated that the average heart rate (HR) can be measured from facial videos based on non-contact remote photoplethysmography (rPPG).
no code implementations • 7 May 2019 • Muzammil Behzad, Nhat Vo, Xiaobai Li, Guoying Zhao
This paper proposes a novel 4D Facial Expression Recognition (FER) method using Collaborative Cross-domain Dynamic Image Network (CCDN).
Facial Expression Recognition Facial Expression Recognition (FER)
no code implementations • 2 Nov 2015 • Xiaobai Li, Xiaopeng Hong, Antti Moilanen, Xiaohua Huang, Tomas Pfister, Guoying Zhao, Matti Pietikäinen
For ME recognition, the performance of previous studies is low.
no code implementations • CVPR 2014 • Xiaobai Li, Jie Chen, Guoying Zhao, Matti Pietikainen
Heart rate is an important indicator of people's physiological state.