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Despite the great success achieved by deep learning methods in face recognition, severe performance drops are observed for large pose variations in unconstrained environments (e.g., in cases of surveillance and photo-tagging). To address…

Computer Vision and Pattern Recognition · Computer Science 2021-07-27 Qiang Meng , Xiaqing Xu , Xiaobo Wang , Yang Qian , Yunxiao Qin , Zezheng Wang , Chenxu Zhao , Feng Zhou , Zhen Lei

Facial forgery methods such as deepfakes can be misused for identity manipulation and spreading misinformation. They have evolved alongside advancements in generative AI, leading to new and more sophisticated forgery techniques that diverge…

Computer Vision and Pattern Recognition · Computer Science 2026-03-30 Nadarasar Bahavan , Sachith Seneviratne , Sanjay Saha , Ken Chen , Sanka Rasnayaka , Saman Halgamuge

In recent years, Face Anti-Spoofing (FAS) has played a crucial role in preserving the security of face recognition technology. With the rise of counterfeit face generation techniques, the challenge posed by digitally edited faces to face…

Computer Vision and Pattern Recognition · Computer Science 2024-04-22 Minzhe Huang , Changwei Nie , Weihong Zhong

As a pioneering work, PointContrast conducts unsupervised 3D representation learning via leveraging contrastive learning over raw RGB-D frames and proves its effectiveness on various downstream tasks. However, the trend of large-scale…

Computer Vision and Pattern Recognition · Computer Science 2023-03-27 Xiaoyang Wu , Xin Wen , Xihui Liu , Hengshuang Zhao

Cutting-edge research in facial expression recognition (FER) currently favors the utilization of convolutional neural networks (CNNs) backbone which is supervisedly pre-trained on face recognition datasets for feature extraction. However,…

Computer Vision and Pattern Recognition · Computer Science 2024-01-17 Fan Zhang , Xiaobao Guo , Xiaojiang Peng , Alex Kot

The COVID-19 pandemic has caused many shutdowns in different industries around the world. Sectors such as infrastructure construction and maintenance projects have not been suspended due to their significant effect on people's routine life.…

Computer Vision and Pattern Recognition · Computer Science 2021-09-30 Moein Razavi , Hamed Alikhani , Vahid Janfaza , Benyamin Sadeghi , Ehsan Alikhani

Open-set face recognition refers to a scenario in which biometric systems have incomplete knowledge of all existing subjects. Therefore, they are expected to prevent face samples of unregistered subjects from being identified as previously…

Computer Vision and Pattern Recognition · Computer Science 2023-08-25 Rafael Henrique Vareto , Manuel Günther , William Robson Schwartz

Pressure-sensitive smart textiles are widely applied in the fields of healthcare, sports monitoring, and intelligent homes. The integration of devices embedded with pressure sensing arrays is expected to enable comprehensive scene coverage…

Signal Processing · Electrical Eng. & Systems 2024-09-13 Yunkang Zhang , Ziyu Wu , Zhen Liang , Fangting Xie , Quan Wan , Mingjie Zhao , Xiaohui Cai

State-of-the-art face recognition methods typically take the multi-classification pipeline and adopt the softmax-based loss for optimization. Although these methods have achieved great success, the softmax-based loss has its limitation from…

Computer Vision and Pattern Recognition · Computer Science 2023-02-13 Lizhe Liu , Mingqiang Chen , Xiaohao Chen , Siyu Zhu , Ping Tan

This paper presents a novel positive and negative set selection strategy for contrastive learning of medical images based on labels that can be extracted from clinical data. In the medical field, there exists a variety of labels for data…

Computer Vision and Pattern Recognition · Computer Science 2022-11-10 Kiran Kokilepersaud , Mohit Prabhushankar , Ghassan AlRegib

Contrastive learning has shown promising potential for learning robust representations by utilizing unlabeled data. However, constructing effective positive-negative pairs for contrastive learning on facial behavior datasets remains…

Computer Vision and Pattern Recognition · Computer Science 2023-08-28 Xiang Zhang , Taoyue Wang , Xiaotian Li , Huiyuan Yang , Lijun Yin

Existing face forgery detection methods usually treat face forgery detection as a binary classification problem and adopt deep convolution neural networks to learn discriminative features. The ideal discriminative features should be only…

Computer Vision and Pattern Recognition · Computer Science 2022-07-11 Wanyi Zhuang , Qi Chu , Haojie Yuan , Changtao Miao , Bin Liu , Nenghai Yu

Deep networks trained on millions of facial images are believed to be closely approaching human-level performance in face recognition. However, open world face recognition still remains a challenge. Although, 3D face recognition has an…

Computer Vision and Pattern Recognition · Computer Science 2020-12-03 Syed Zulqarnain Gilani , Ajmal Mian

The usage of smartphone-collected respiratory sound, trained with deep learning models, for detecting and classifying COVID-19 becomes popular recently. It removes the need for in-person testing procedures especially for rural regions where…

Sound · Computer Science 2021-08-26 Hao Xue , Flora D. Salim

We perform a comprehensive benchmarking of contrastive frameworks for learning multimodal representations in the medical domain. Through this study, we aim to answer the following research questions: (i) How transferable are general-domain…

Computer Vision and Pattern Recognition · Computer Science 2024-06-12 Shuvendu Roy , Yasaman Parhizkar , Franklin Ogidi , Vahid Reza Khazaie , Michael Colacci , Ali Etemad , Elham Dolatabadi , Arash Afkanpour

Modern natural language processing (NLP) methods employ self-supervised pretraining objectives such as masked language modeling to boost the performance of various application tasks. These pretraining methods are frequently extended with…

Computation and Language · Computer Science 2021-02-26 Nils Rethmeier , Isabelle Augenstein

It is well known that deep learning approaches to face recognition and facial landmark detection suffer from biases in modern training datasets. In this work, we propose to use synthetic face images to reduce the negative effects of dataset…

Computer Vision and Pattern Recognition · Computer Science 2019-06-25 Adam Kortylewski , Bernhard Egger , Andreas Morel-Forster , Andreas Schneider , Thomas Gerig , Clemens Blumer , Corius Reyneke , Thomas Vetter

Recent learning-based approaches have made astonishing advances in calibrated medical imaging like computerized tomography (CT), yet they struggle to generalize in uncalibrated modalities -- notably magnetic resonance (MR) imaging, where…

Computer Vision and Pattern Recognition · Computer Science 2024-03-12 Peirong Liu , Oula Puonti , Xiaoling Hu , Daniel C. Alexander , Juan E. Iglesias

Face anti-spoofing (FAS) plays a vital role in securing the face recognition systems from presentation attacks. Most existing FAS methods capture various cues (e.g., texture, depth and reflection) to distinguish the live faces from the…

Computer Vision and Pattern Recognition · Computer Science 2020-07-07 Zitong Yu , Xiaobai Li , Xuesong Niu , Jingang Shi , Guoying Zhao

Face anti-spoofing is crucial to security of face recognition systems. Previous approaches focus on developing discriminative models based on the features extracted from images, which may be still entangled between spoof patterns and real…

Computer Vision and Pattern Recognition · Computer Science 2020-08-20 Ke-Yue Zhang , Taiping Yao , Jian Zhang , Ying Tai , Shouhong Ding , Jilin Li , Feiyue Huang , Haichuan Song , Lizhuang Ma