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Facial expressions are important cues to observe human emotions. Facial expression recognition has attracted many researchers for years, but it is still a challenging topic since expression features vary greatly with the head poses,…

Computer Vision and Pattern Recognition · Computer Science 2020-09-15 S. D. Lalitha , K. K. Thyagharajan

In this paper, we propose a novel face detection network with three novel contributions that address three key aspects of face detection, including better feature learning, progressive loss design and anchor assign based data augmentation,…

Computer Vision and Pattern Recognition · Computer Science 2019-04-09 Jian Li , Yabiao Wang , Changan Wang , Ying Tai , Jianjun Qian , Jian Yang , Chengjie Wang , Jilin Li , Feiyue Huang

We present a novel deep learning approach to synthesize complete face images in the presence of large ocular region occlusions. This is motivated by recent surge of VR/AR displays that hinder face-to-face communications. Different from the…

Computer Vision and Pattern Recognition · Computer Science 2018-07-25 Yajie Zhao , Weikai Chen , Jun Xing , Xiaoming Li , Zach Bessinger , Fuchang Liu , Wangmeng Zuo , Ruigang Yang

One weakness of machine-learning algorithms is the need to train the models for a new task. This presents a specific challenge for biometric recognition due to the dynamic nature of databases and, in some instances, the reliance on subject…

Computer Vision and Pattern Recognition · Computer Science 2023-07-12 Kevin Hernandez-Diaz , Fernando Alonso-Fernandez , Josef Bigun

Deep neural networks have demonstrated prominent capacities for image classification tasks in a closed set setting, where the test data come from the same distribution as the training data. However, in a more realistic open set scenario,…

Computer Vision and Pattern Recognition · Computer Science 2022-03-17 Feiyang Cai , Zhenkai Zhang , Jie Liu , Xenofon Koutsoukos

Facial expressions convey massive information and play a crucial role in emotional expression. Deep neural network (DNN) accompanied by deep metric learning (DML) techniques boost the discriminative ability of the model in facial expression…

Computer Vision and Pattern Recognition · Computer Science 2023-02-09 Hossein Rajoli , Fatemeh Lotfi , Adham Atyabi , Fatemeh Afghah

Facial expression recognition (FER) models are typically trained on datasets with a fixed number of seven basic classes. However, recent research works point out that there are far more expressions than the basic ones. Thus, when these…

Computer Vision and Pattern Recognition · Computer Science 2024-01-24 Yuhang Zhang , Yue Yao , Xuannan Liu , Lixiong Qin , Wenjing Wang , Weihong Deng

Open set recognition (OSR) is a critical aspect of machine learning, addressing the challenge of detecting novel classes during inference. Within the realm of deep learning, neural classifiers trained on a closed set of data typically…

Computer Vision and Pattern Recognition · Computer Science 2026-05-05 Jiawen Xu , Margret Keuper

The primary assumption of conventional supervised learning or classification is that the test samples are drawn from the same distribution as the training samples, which is called closed set learning or classification. In many practical…

Computer Vision and Pattern Recognition · Computer Science 2022-08-23 Sepideh Esmaeilpour , Lei Shu , Bing Liu

Modern object detectors have achieved impressive progress under the close-set setup. However, open-set object detection (OSOD) remains challenging since objects of unknown categories are often misclassified to existing known classes. In…

Computer Vision and Pattern Recognition · Computer Science 2022-05-10 Jiaming Han , Yuqiang Ren , Jian Ding , Xingjia Pan , Ke Yan , Gui-Song Xia

Deep Neural Network (DNN) has recently achieved outstanding performance in a variety of computer vision tasks, including facial attribute classification. The great success of classifying facial attributes with DNN often relies on a massive…

Computer Vision and Pattern Recognition · Computer Science 2018-05-04 Ni Zhuang , Yan Yan , Si Chen , Hanzi Wang , Chunhua Shen

Many face recognition systems boost the performance using deep learning models, but only a few researches go into the mechanisms for dealing with online registration. Although we can obtain discriminative facial features through the…

Computer Vision and Pattern Recognition · Computer Science 2018-10-29 Hsin-Rung Chou , Jia-Hong Lee , Yi-Ming Chan , Chu-Song Chen

Using the face as a biometric identity trait is motivated by the contactless nature of the capture process and the high accuracy of the recognition algorithms. After the current COVID-19 pandemic, wearing a face mask has been imposed in…

Computer Vision and Pattern Recognition · Computer Science 2021-12-14 Fadi Boutros , Naser Damer , Florian Kirchbuchner , Arjan Kuijper

In 2D+3D facial expression recognition (FER), existing methods generate multi-view geometry maps to enhance the depth feature representation. However, this may introduce false estimations due to local plane fitting from incomplete point…

Computer Vision and Pattern Recognition · Computer Science 2020-11-18 Yang Jiao , Yi Niu , Trac D. Tran , Guangming Shi

Face detection has witnessed significant progress due to the advances of deep convolutional neural networks (CNNs). Its central issue in recent years is how to improve the detection performance of tiny faces. To this end, many recent works…

Computer Vision and Pattern Recognition · Computer Science 2019-05-27 Faen Zhang , Xinyu Fan , Guo Ai , Jianfei Song , Yongqiang Qin , Jiahong Wu

Semi-supervised learning (SSL) methods assume that labeled data, unlabeled data and test data are from the same distribution. Open-set semi-supervised learning (Open-set SSL) considers a more practical scenario, where unlabeled data and…

Machine Learning · Computer Science 2024-04-16 Yang Yu , Danruo Deng , Furui Liu , Yueming Jin , Qi Dou , Guangyong Chen , Pheng-Ann Heng

Face recognition has achieved great progress owing to the fast development of the deep neural network in the past a few years. As an important part of deep neural networks, a number of the loss functions have been proposed which…

Computer Vision and Pattern Recognition · Computer Science 2020-02-05 Xin Wei , Hui Wang , Bryan Scotney , Huan Wan

Face occlusions, covering either the majority or discriminative parts of the face, can break facial perception and produce a drastic loss of information. Biometric systems such as recent deep face recognition models are not immune to…

Computer Vision and Pattern Recognition · Computer Science 2019-06-10 Joe Mathai , Iacopo Masi , Wael AbdAlmageed

Face Recognition is one of the prominent problems in the computer vision domain. Witnessing advances in deep learning, significant work has been observed in face recognition, which touched upon various parts of the recognition framework…

Computer Vision and Pattern Recognition · Computer Science 2020-12-24 Yash Srivastava , Vaishnav Murali , Shiv Ram Dubey

Person re-identification (re-ID) is a task of matching pedestrians under disjoint camera views. To recognise paired snapshots, it has to cope with large cross-view variations caused by the camera view shift. Supervised deep neural networks…

Computer Vision and Pattern Recognition · Computer Science 2019-07-24 Lin Wu , Richang Hong , Yang Wang , Meng Wang