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The diversity of retinal imaging devices poses a significant challenge: domain shift, which leads to performance degradation when applying the deep learning models trained on one domain to new testing domains. In this paper, we propose a…

Image and Video Processing · Electrical Eng. & Systems 2021-10-07 Peng Liu , Charlie T. Tran , Bin Kong , Ruogu Fang

Lack of generalization to unseen domains/attacks is the Achilles heel of most face presentation attack detection (FacePAD) algorithms. Existing attempts to enhance the generalizability of FacePAD solutions assume that data from multiple…

Computer Vision and Pattern Recognition · Computer Science 2023-08-23 Naif Alkhunaizi , Koushik Srivatsan , Faris Almalik , Ibrahim Almakky , Karthik Nandakumar

Recently, considerable effort has been devoted to deep domain adaptation in computer vision and machine learning communities. However, most of existing work only concentrates on learning shared feature representation by minimizing the…

Machine Learning · Computer Science 2019-04-24 Chao Chen , Zhihong Chen , Boyuan Jiang , Xinyu Jin

Although face recognition systems have seen a massive performance enhancement in recent years, they are still targeted by threats such as presentation attacks, leading to the need for generalizable presentation attack detection (PAD)…

Computer Vision and Pattern Recognition · Computer Science 2025-01-07 Guray Ozgur , Eduarda Caldeira , Tahar Chettaoui , Fadi Boutros , Raghavendra Ramachandra , Naser Damer

Addressing the challenge of domain shift between datasets is vital in maintaining model performance. In the context of cross-domain object detection, the teacher-student framework, a widely-used semi-supervised model, has shown significant…

Computer Vision and Pattern Recognition · Computer Science 2024-09-19 Runou Yang , Tian Tian , Jinwen Tian

Currently, the divergence in distributions of design and operational data, and large computational complexity are limiting factors in the adoption of CNNs in real-world applications. For instance, person re-identification systems typically…

Machine Learning · Computer Science 2020-05-19 Le Thanh Nguyen-Meidine , Eric Granger , Madhu Kiran , Jose Dolz , Louis-Antoine Blais-Morin

The paper addresses face presentation attack detection in the challenging conditions of an unseen attack scenario where the system is exposed to novel presentation attacks that were not present in the training step. For this purpose, a pure…

Computer Vision and Pattern Recognition · Computer Science 2020-01-01 Shervin Rahimzadeh Arashloo

In Generalized Category Discovery (GCD), we cluster unlabeled samples of known and novel classes, leveraging a training dataset of known classes. A salient challenge arises due to domain shifts between these datasets. To address this, we…

Computer Vision and Pattern Recognition · Computer Science 2024-04-09 Sai Bhargav Rongali , Sarthak Mehrotra , Ankit Jha , Mohamad Hassan N C , Shirsha Bose , Tanisha Gupta , Mainak Singha , Biplab Banerjee

Object detectors encounter challenges in handling domain shifts. Cutting-edge domain adaptive object detection methods use the teacher-student framework and domain adversarial learning to generate domain-invariant pseudo-labels for…

Computer Vision and Pattern Recognition · Computer Science 2024-08-20 Kaiwen Wang , Yinzhe Shen , Martin Lauer

A large number of deep neural network based techniques have been developed to address the challenging problem of face presentation attack detection (PAD). Whereas such techniques' focus has been on improving PAD performance in terms of…

Computer Vision and Pattern Recognition · Computer Science 2021-11-11 Hengameh Mirzaalian , Mohamed E. Hussein , Leonidas Spinoulas , Jonathan May , Wael Abd-Almageed

Knowledge Distillation (KD) aims to learn a compact student network using knowledge from a large pre-trained teacher network, where both networks are trained on data from the same distribution. However, in practical applications, the…

Machine Learning · Computer Science 2024-01-17 Jialiang Tang , Shuo Chen , Gang Niu , Hongyuan Zhu , Joey Tianyi Zhou , Chen Gong , Masashi Sugiyama

Domain adaptation (DA) aims to generalize a learning model across training and testing data despite the mismatch of their data distributions. In light of a theoretical estimation of upper error bound, we argue in this paper that an…

Computer Vision and Pattern Recognition · Computer Science 2018-01-01 Lingkun Luo , Liming Chen , Shiqiang Hu , Ying Lu , Xiaofang Wang

In this paper, we propose a framework capable of generating face images that fall into the same distribution as that of a given one-shot example. We leverage a pre-trained StyleGAN model that already learned the generic face distribution.…

Computer Vision and Pattern Recognition · Computer Science 2020-03-31 Chao Yang , Ser-Nam Lim

Diffusion models (DMs) produce high-quality images, yet their sampling remains costly when adapted to new domains. Distilled DMs are faster but typically remain confined within their teacher's domain. Thus, fast and high-quality generation…

Computer Vision and Pattern Recognition · Computer Science 2026-03-26 Yara Bahram , Mélodie Desbos , Mohammadhadi Shateri , Eric Granger

Domain adaptation (DA) is transfer learning which aims to learn an effective predictor on target data from source data despite data distribution mismatch between source and target. We present in this paper a novel unsupervised DA method for…

Computer Vision and Pattern Recognition · Computer Science 2018-02-23 Lingkun Luo , Liming Chen , Ying lu , Shiqiang Hu

Deep learning has emerged as a leading approach for Automatic Modulation Classification (AMC), demonstrating superior performance over traditional methods. However, vulnerability to adversarial attacks and susceptibility to data…

Machine Learning · Computer Science 2025-11-04 Ali Owfi , Amirmohammad Bamdad , Tolunay Seyfi , Fatemeh Afghah

Background: Image classification can be considered one of the key pillars of medical image analysis. Deep learning (DL) faces challenges that prevent its practical applications despite the remarkable improvement in medical image…

Image and Video Processing · Electrical Eng. & Systems 2026-02-19 Shahabedin Nabavi , Kian Anvari Hamedani , Mohsen Ebrahimi Moghaddam , Ahmad Ali Abin , Alejandro F. Frangi

The vulnerability of automated fingerprint recognition systems to presentation attacks (PA), i.e., spoof or altered fingers, has been a growing concern, warranting the development of accurate and efficient presentation attack detection…

Computer Vision and Pattern Recognition · Computer Science 2020-04-08 Steven A. Grosz , Tarang Chugh , Anil K. Jain

Although a significant progress has been witnessed in supervised person re-identification (re-id), it remains challenging to generalize re-id models to new domains due to the huge domain gaps. Recently, there has been a growing interest in…

Computer Vision and Pattern Recognition · Computer Science 2020-07-21 Yang Zou , Xiaodong Yang , Zhiding Yu , B. V. K. Vijaya Kumar , Jan Kautz

Fingerprint capture systems can be fooled by widely accessible methods to spoof the system using fake fingers, known as presentation attacks. As biometric recognition systems become more extensively relied upon at international borders and…

Image and Video Processing · Electrical Eng. & Systems 2021-04-09 Richard Plesh , Keivan Bahmani , Ganghee Jang , David Yambay , Ken Brownlee , Timothy Swyka , Peter Johnson , Arun Ross , Stephanie Schuckers