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For black-box attacks, the gap between the substitute model and the victim model is usually large, which manifests as a weak attack performance. Motivated by the observation that the transferability of adversarial examples can be improved…

Computer Vision and Pattern Recognition · Computer Science 2022-07-13 Yuyang Long , Qilong Zhang , Boheng Zeng , Lianli Gao , Xianglong Liu , Jian Zhang , Jingkuan Song

With the development of deep neural networks, the performance of crowd counting and pixel-wise density estimation are continually being refreshed. Despite this, there are still two challenging problems in this field: 1) current supervised…

Computer Vision and Pattern Recognition · Computer Science 2020-10-28 Junyu Gao , Yuan Yuan , Qi Wang

In many manufacturing settings, annotating data for machine learning and computer vision is costly, but synthetic data can be generated at significantly lower cost. Substituting the real-world data with synthetic data is therefore appealing…

Machine Learning · Computer Science 2024-06-28 Lukas Malte Kemeter , Rasmus Hvingelby , Paulina Sierak , Tobias Schön , Bishwajit Gosswam

This paper presents a novel unsupervised domain adaptation framework, called Synergistic Image and Feature Adaptation (SIFA), to effectively tackle the problem of domain shift. Domain adaptation has become an important and hot topic in…

Computer Vision and Pattern Recognition · Computer Science 2019-06-19 Cheng Chen , Qi Dou , Hao Chen , Jing Qin , Pheng-Ann Heng

Monitoring the growth of subcortical regions of the fetal brain in ultrasound (US) images can help identify the presence of abnormal development. Manually segmenting these regions is a challenging task, but recent work has shown that it can…

Computer Vision and Pattern Recognition · Computer Science 2025-02-14 Joshua Omolegan , Pak Hei Yeung , Madeleine K. Wyburd , Linde Hesse , Monique Haak , Intergrowth-21st Consortium , Ana I. L. Namburete , Nicola K. Dinsdale

Machine learning models often struggle with generalization in small, heterogeneous datasets due to domain shifts caused by variations in data collection and population differences. This challenge is particularly pronounced in biological…

Machine Learning · Computer Science 2025-02-14 Cem Ata Baykara , Ali Burak Ünal , Nico Pfeifer , Mete Akgün

Deep learning techniques for medical image analysis usually suffer from the domain shift between source and target data. Most existing works focus on unsupervised domain adaptation (UDA). However, in practical applications, privacy issues…

Computer Vision and Pattern Recognition · Computer Science 2023-07-25 Yixin Chen , Yan Wang

Unsupervised Domain Adaptation (UDA) can improve a perception model's generalization to an unlabeled target domain starting from a labeled source domain. UDA using Vision Foundation Models (VFMs) with synthetic source data can achieve…

Computer Vision and Pattern Recognition · Computer Science 2025-04-28 Brunó B. Englert , Tommie Kerssies , Gijs Dubbelman

Domain adaptation (DA) aims to transfer knowledge from a label-rich source domain to a related but label-scarce target domain. The conventional DA strategy is to align the feature distributions of the two domains. Recently, increasing…

Computer Vision and Pattern Recognition · Computer Science 2022-03-08 Yixin Zhang , Junjie Li , Zilei Wang

Unsupervised domain adaptation (UDA) plays a crucial role in addressing distribution shifts in machine learning. In this work, we improve the theoretical foundations of UDA proposed in Acuna et al. (2021) by refining their…

Machine Learning · Statistics 2024-10-29 Ziqiao Wang , Yongyi Mao

Deep learning has been used extensively for medical image analysis applications, assuming the training and test data adhere to the same probability distributions. However, a common challenge arises when dealing with medical images generated…

Image and Video Processing · Electrical Eng. & Systems 2024-07-09 Mohd Usama , Emma Nyman , Ulf Naslund , Christer Gronlund

Object detection is essential in space applications targeting Space Domain Awareness and also applications involving relative navigation scenarios. Current deep learning models for Object Detection in space applications are often trained on…

Computer Vision and Pattern Recognition · Computer Science 2025-09-23 Samet Hicsonmez , Abd El Rahman Shabayek , Arunkumar Rathinam , Djamila Aouada

The application of deep machine learning methods in astronomy has exploded in the last decade, with new models showing remarkably improved performance on benchmark tasks. Not nearly enough attention is given to understanding the models'…

Instrumentation and Methods for Astrophysics · Physics 2025-10-14 Michelle Ntampaka , A. Ciprijanovic , Ana Maria Delgado , John Soltis , John F. Wu , Mikaeel Yunus , John ZuHone

Face anti-spoofing (FAS) approaches based on unsupervised domain adaption (UDA) have drawn growing attention due to promising performances for target scenarios. Most existing UDA FAS methods typically fit the trained models to the target…

Computer Vision and Pattern Recognition · Computer Science 2022-11-24 Qianyu Zhou , Ke-Yue Zhang , Taiping Yao , Ran Yi , Kekai Sheng , Shouhong Ding , Lizhuang Ma

In this paper, we tackle the unsupervised domain adaptation (UDA) for semantic segmentation, which aims to segment the unlabeled real data using labeled synthetic data. The main problem of UDA for semantic segmentation relies on reducing…

Computer Vision and Pattern Recognition · Computer Science 2020-12-24 Suhyeon Lee , Junhyuk Hyun , Hongje Seong , Euntai Kim

In recent years, numerous domain adaptive strategies have been proposed to help deep learning models overcome the challenges posed by domain shift. However, even unsupervised domain adaptive strategies still require a large amount of target…

Image and Video Processing · Electrical Eng. & Systems 2024-07-11 Sumayya Inayat , Nimra Dilawar , Waqas Sultani , Mohsen Ali

The insertion of deep learning in medical image analysis had lead to the development of state-of-the art strategies in several applications such a disease classification, as well as abnormality detection and segmentation. However, even the…

Image and Video Processing · Electrical Eng. & Systems 2022-02-24 Mauricio Orbes-Arteaga , Thomas Varsavsky , Lauge Sorensen , Mads Nielsen , Akshay Pai , Sebastien Ourselin , Marc Modat , M Jorge Cardoso

Unsupervised domain adaptation (UDA) methods for learning domain invariant representations have achieved remarkable progress. However, most of the studies were based on direct adaptation from the source domain to the target domain and have…

Computer Vision and Pattern Recognition · Computer Science 2021-03-26 Jaemin Na , Heechul Jung , Hyung Jin Chang , Wonjun Hwang

Source-free domain adaptation (SFDA) aims to adapt a well-trained source model to an unlabelled target domain without accessing the source dataset, making it applicable in a variety of real-world scenarios. Existing SFDA methods ONLY assess…

Computer Vision and Pattern Recognition · Computer Science 2023-10-10 Longxiang Tang , Kai Li , Chunming He , Yulun Zhang , Xiu Li

Standard Unsupervised Domain Adaptation (UDA) aims to transfer knowledge from a labeled source domain to an unlabeled target but usually requires simultaneous access to both source and target data. Moreover, UDA approaches commonly assume…

Computer Vision and Pattern Recognition · Computer Science 2024-04-17 Mattia Litrico , Davide Talon , Sebastiano Battiato , Alessio Del Bue , Mario Valerio Giuffrida , Pietro Morerio