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Facial recognition and verification is a widely used biometric technology in security system. Unfortunately, face biometrics is vulnerable to spoofing attacks using photographs or videos. In this paper, we present an anisotropic…

Computer Vision and Pattern Recognition · Computer Science 2017-07-11 Changyong Yu , Yunde Jia

Face recognition is still a very demanding area of research. This problem becomes more challenging in unconstrained environment and in the presence of several variations like pose, illumination, expression, etc. Local descriptors are widely…

Computer Vision and Pattern Recognition · Computer Science 2019-07-04 Shiv Ram Dubey

In the recent past, different researchers have proposed privacy-enhancing face recognition systems designed to conceal soft-biometric attributes at feature level. These works have reported impressive results, but generally did not consider…

Computer Vision and Pattern Recognition · Computer Science 2022-05-18 Dailé Osorio-Roig , Christian Rathgeb , Pawel Drozdowski , Philipp Terhörst , Vitomir Štruc , Christoph Busch

Describable visual facial attributes are now commonplace in human biometrics and affective computing, with existing algorithms even reaching a sufficient point of maturity for placement into commercial products. These algorithms model…

Computer Vision and Pattern Recognition · Computer Science 2017-05-12 Mel McCurrie , Fernando Beletti , Lucas Parzianello , Allen Westendorp , Samuel Anthony , Walter Scheirer

Recent years have witnessed tremendous progress in single image super-resolution (SISR) owing to the deployment of deep convolutional neural networks (CNNs). For most existing methods, the computational cost of each SISR model is irrelevant…

Image and Video Processing · Electrical Eng. & Systems 2020-04-09 Ming Liu , Zhilu Zhang , Liya Hou , Wangmeng Zuo , Lei Zhang

Wearable computing and context awareness are the focuses of study in the field of artificial intelligence recently. One of the most appealing as well as challenging applications is the Human Activity Recognition (HAR) utilizing smart…

Machine Learning · Computer Science 2018-10-26 Mingtao Dong , Jindong Han

Background/Aim. This study aims to predict Amyloid Positron Emission Tomography (AmyloidPET) status with multimodal retinal imaging and convolutional neural networks (CNNs) and to improve the performance through pretraining with synthetic…

Image and Video Processing · Electrical Eng. & Systems 2024-06-27 I. R. Slootweg , M. Thach , K. R. Curro-Tafili , F. D. Verbraak , F. H. Bouwman , Y. A. L. Pijnenburg , J. F. Boer , J. H. P. de Kwisthout , L. Bagheriye , P. J. González

Recurrent Neural Networks are powerful machine learning frameworks that allow for data to be saved and referenced in a temporal sequence. This opens many new possibilities in fields such as handwriting analysis and speech recognition. This…

Machine Learning · Computer Science 2021-09-14 Joseph M. Ackerson , Dave Rushit , Seliya Jim

A deep convolutional neural network (CNN) has been widely used in image classification and gives better classification accuracy than the other techniques. The softmax cross-entropy loss function is often used for classification tasks. There…

Computer Vision and Pattern Recognition · Computer Science 2020-04-20 Motoshi Abe , Junichi Miyao , Takio Kurita

This paper describes an effective and efficient image classification framework nominated distributed deep representation learning model (DDRL). The aim is to strike the balance between the computational intensive deep learning approaches…

Computer Vision and Pattern Recognition · Computer Science 2016-07-05 Le Dong , Na Lv , Qianni Zhang , Shanshan Xie , Ling He , Mengdie Mao

Electrocardiogram (ECG)-based biometric recognition has emerged as a promising solution for secure authentication and liveness detection. However, most existing methods rely on unimodal deep learning architectures that independently process…

Computer Vision and Pattern Recognition · Computer Science 2026-05-19 Arioua , Islameddine , Benzaoui , Amir , Zeroual , Abdelhafid , Houam , Lotfi

Identity recognition from ear images is an active field of research within the biometric community. The ability to capture ear images from a distance and in a covert manner makes ear recognition technology an appealing choice for…

Computer Vision and Pattern Recognition · Computer Science 2019-02-04 Žiga Emeršič , Dejan Štepec , Vitomir Štruc , Peter Peer

Deep facial expression recognition faces two challenges that both stem from the large number of trainable parameters: long training times and a lack of interpretability. We propose a novel method based on evolutionary algorithms, that deals…

Neural and Evolutionary Computing · Computer Science 2020-10-14 Emmanuel Dufourq , Bruce A. Bassett

Cross-resolution face recognition (CRFR), which is important in intelligent surveillance and biometric forensics, refers to the problem of matching a low-resolution (LR) probe face image against high-resolution (HR) gallery face images.…

Computer Vision and Pattern Recognition · Computer Science 2021-03-26 Guangwei Gao , Yi Yu , Jian Yang , Guo-Jun Qi , Meng Yang

We propose a novel attention model that can accurately attends to target objects of various scales and shapes in images. The model is trained to gradually suppress irrelevant regions in an input image via a progressive attentive process…

Computer Vision and Pattern Recognition · Computer Science 2018-08-08 Paul Hongsuck Seo , Zhe Lin , Scott Cohen , Xiaohui Shen , Bohyung Han

Convolutional neural network (CNN) slides a kernel over the whole image to produce an output map. This kernel scheme reduces the number of parameters with respect to a fully connected neural network (NN). While CNN has proven to be an…

Computer Vision and Pattern Recognition · Computer Science 2025-04-29 Ihsan Ullah , Alfredo Petrosino

Facial expression recognition has been an active research area over the past few decades, and it is still challenging due to the high intra-class variation. Traditional approaches for this problem rely on hand-crafted features such as SIFT,…

Computer Vision and Pattern Recognition · Computer Science 2019-02-05 Shervin Minaee , Amirali Abdolrashidi

This paper introduces a novel approach that combines unsupervised active contour models with deep learning for robust and adaptive image segmentation. Indeed, traditional active contours, provide a flexible framework for contour evolution…

Computer Vision and Pattern Recognition · Computer Science 2024-07-16 Antoine Habis , Vannary Meas-Yedid , Elsa Angelini , Jean-Christophe Olivo-Marin

Deep learning methods based on Convolutional Neural Networks (CNNs) have shown great potential to improve early and accurate diagnosis of Alzheimer's disease (AD) dementia based on imaging data. However, these methods have yet to be widely…

Computer Vision and Pattern Recognition · Computer Science 2025-01-22 Wenjie Kang , Lize Jiskoot , Peter De Deyn , Geert Biessels , Huiberdina Koek , Jurgen Claassen , Huub Middelkoop , Wiesje Flier , Willemijn J. Jansen , Stefan Klein , Esther Bron

Feature attribution methods, which explain an individual prediction made by a model as a sum of attributions for each input feature, are an essential tool for understanding the behavior of complex deep learning models. However, ensuring…

Machine Learning · Computer Science 2020-10-28 Ethan Weinberger , Joseph Janizek , Su-In Lee