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While the design of blind image quality assessment (IQA) algorithms has improved significantly, the distribution shift between the training and testing scenarios often leads to a poor performance of these methods at inference time. This…

Computer Vision and Pattern Recognition · Computer Science 2023-09-27 Subhadeep Roy , Shankhanil Mitra , Soma Biswas , Rajiv Soundararajan

Supervised deep learning methods for segmentation require large amounts of labelled training data, without which they are prone to overfitting, not generalizing well to unseen images. In practice, obtaining a large number of annotations…

Computer Vision and Pattern Recognition · Computer Science 2019-03-01 Krishna Chaitanya , Neerav Karani , Christian Baumgartner , Olivio Donati , Anton Becker , Ender Konukoglu

The objective of this study was to develop a PET tumor-segmentation framework that addresses the challenges of limited spatial resolution, high image noise, and lack of clinical training data with ground-truth tumor boundaries in PET…

Atrial fibrillation (AF) detection from electrocardiogram (ECG) signals is crucial for early diagnosis and management of cardiovascular diseases. However, deploying robust AF detection models across different datasets with significant…

Signal Processing · Electrical Eng. & Systems 2025-03-19 Majid Soleimani , Maedeh H. Toosi , Siamak Mohammadi , Babak Hossein Khalaj

Transferable Targeted Attacks (TTAs) face significant challenges due to severe overfitting to surrogate models. Recent breakthroughs heavily rely on large-scale training data of victim models, while data-free solutions, \textit{i.e.}, image…

Cryptography and Security · Computer Science 2026-04-06 Yongxiang Liu , Bowen Peng , Li Liu , Xiang Li

Medical image segmentation, particularly in the context of ultrasound data, is a crucial aspect of computer vision and medical imaging. This paper delves into the complexities of uncertainty in the segmentation process, focusing on fetal…

Image and Video Processing · Electrical Eng. & Systems 2024-01-19 Shuge Lei

Deep learning models have shown great promise in diverse remote sensing applications. However, they often struggle to generalize across geographic regions unseen during training due to domain shifts. Domain shifts occur when data…

Computer Vision and Pattern Recognition · Computer Science 2026-04-07 Sofiane Bouaziz , Adel Hafiane , Raphael Canals , Rachid Nedjai

Test-time adaptation (TTA) refers to adapting a classifier for the test data when the probability distribution of the test data slightly differs from that of the training data of the model. To the best of our knowledge, most of the existing…

Machine Learning · Computer Science 2026-01-19 Sravan Danda , Aditya Challa , Shlok Mehendale , Snehanshu Saha

Test-time adaptation with pre-trained vision-language models (VLMs) has attracted increasing attention for tackling the issue of distribution shift during the test phase. While prior methods have shown effectiveness in addressing…

Computer Vision and Pattern Recognition · Computer Science 2024-11-26 Baoshun Tong , Kaiyu Song , Hanjiang Lai

Automatic brain tumor segmentation plays an important role for diagnosis, surgical planning and treatment assessment of brain tumors. Deep convolutional neural networks (CNNs) have been widely used for this task. Due to the relatively small…

Computer Vision and Pattern Recognition · Computer Science 2019-02-26 Guotai Wang , Wenqi Li , Sebastien Ourselin , Tom Vercauteren

Electroencephalography (EEG) foundation models have shown strong potential for learning generalizable representations from large-scale neural data, yet their clinical deployment is hindered by distribution shifts across clinical settings,…

Machine Learning · Computer Science 2026-04-21 Gabriel Jason Lee , Jathurshan Pradeepkumar , Jimeng Sun

Deep neural networks have useful applications in many different tasks, however their performance can be severely affected by changes in the data distribution. For example, in the biomedical field, their performance can be affected by…

Computer Vision and Pattern Recognition · Computer Science 2024-05-30 Pedro Vianna , Muawiz Chaudhary , Paria Mehrbod , An Tang , Guy Cloutier , Guy Wolf , Michael Eickenberg , Eugene Belilovsky

Test-time adaptation (TTA) has emerged as a promising paradigm for vision-language models (VLMs) to bridge the distribution gap between pre-training and test data. Recent works have focused on backpropagation-free TTA methods that rely on…

Computer Vision and Pattern Recognition · Computer Science 2026-05-14 Zhaohong Huang , Yuxin Zhang , Wenjing Liu , Fei Chao , Rongrong Ji

Test-time adaptation (TTA) is an effective approach to mitigate performance degradation of trained models when encountering input distribution shifts at test time. However, existing TTA methods often suffer significant performance drops…

Machine Learning · Computer Science 2025-02-06 Minguk Jang , Hye Won Chung

Test-Time Adaptation (TTA) has emerged as a promising paradigm for enhancing the generalizability of models. However, existing mainstream TTA methods, predominantly operating at batch level, often exhibit suboptimal performance in complex…

Machine Learning · Computer Science 2024-10-15 Yige Yuan , Bingbing Xu , Teng Xiao , Liang Hou , Fei Sun , Huawei Shen , Xueqi Cheng

In this work, we propose a novel complementary learning approach to enhance test-time adaptation (TTA), which has been proven to exhibit good performance on testing data with distribution shifts such as corruptions. In test-time adaptation…

Computer Vision and Pattern Recognition · Computer Science 2024-05-01 Jiayi Han , Longbin Zeng , Liang Du , Weiyang Ding , Jianfeng Feng

Vision-language models (VLMs), despite their extraordinary zero-shot capabilities, are vulnerable to distribution shifts. Test-time adaptation (TTA) emerges as a predominant strategy to adapt VLMs to unlabeled test data on the fly. However,…

Computer Vision and Pattern Recognition · Computer Science 2026-01-14 Zhichen Zeng , Wenxuan Bao , Xiao Lin , Ruizhong Qiu , Tianxin Wei , Xuying Ning , Yuchen Yan , Chen Luo , Monica Xiao Cheng , Jingrui He , Hanghang Tong

Test-Time Adaptation (TTA) adapts pre-trained models using only unlabeled test streams, requiring real-time inference and update without access to source data. We propose StructuralTest-time Alignment of Gradients (STAG), a lightweight…

Computer Vision and Pattern Recognition · Computer Science 2026-02-09 Juhyeon Shin , Yujin Oh , Jonghyun Lee , Saehyung Lee , Minjun Park , Dongjun Lee , Uiwon Hwang , Sungroh Yoon

Deep learning models usually require sufficient training data to achieve high accuracy, but obtaining labeled data can be time-consuming and labor-intensive. Here we introduce a template-based training method to train a 3D U-Net model from…

Image and Video Processing · Electrical Eng. & Systems 2023-08-07 Fang-Cheng Yeh

Single-source domain generalization (SDG) in medical image segmentation is a challenging yet essential task as domain shifts are quite common among clinical image datasets. Previous attempts most conduct global-only/random augmentation.…

Computer Vision and Pattern Recognition · Computer Science 2022-11-29 Zixian Su , Kai Yao , Xi Yang , Qiufeng Wang , Jie Sun , Kaizhu Huang