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Unsupervised domain adaptation is one of the challenging problems in computer vision. This paper presents a novel approach to unsupervised domain adaptations based on the optimal transport-based distance. Our approach allows aligning target…

Computer Vision and Pattern Recognition · Computer Science 2022-05-24 Thanh-Dat Truong , Naga Venkata Sai Raviteja Chappa , Xuan Bac Nguyen , Ngan Le , Ashley Dowling , Khoa Luu

Deep learning models in medical imaging often encounter challenges when adapting to new clinical settings unseen during training. Test-time adaptation offers a promising approach to optimize models for these unseen domains, yet its…

Machine Learning · Computer Science 2024-10-28 Sameer Ambekar , Julia A. Schnabel , Cosmin I. Bercea

The success of large language models has inspired the computer vision community to explore image segmentation foundation model that is able to zero/few-shot generalize through prompt engineering. Segment-Anything(SAM), among others, is the…

Computer Vision and Pattern Recognition · Computer Science 2024-04-11 Haojie Zhang , Yongyi Su , Xun Xu , Kui Jia

Transfer learning of diffusion models to smaller target domains is challenging, as naively fine-tuning the model often results in poor generalization. Test-time guidance methods help mitigate this by offering controllable improvements in…

Graphics · Computer Science 2026-01-21 Yara Bahram , Mohammadhadi Shateri , Eric Granger

It is a well-known fact that the performance of deep learning models deteriorates when they encounter a distribution shift at test time. Test-time adaptation (TTA) algorithms have been proposed to adapt the model online while inferring test…

Computer Vision and Pattern Recognition · Computer Science 2023-12-15 Jayeon Yoo , Dongkwan Lee , Inseop Chung , Donghyun Kim , Nojun Kwak

Deep neural networks (DNNs) trained on one set of medical images often experience severe performance drop on unseen test images, due to various domain discrepancy between the training images (source domain) and the test images (target…

Computer Vision and Pattern Recognition · Computer Science 2021-07-13 Shaohua Li , Xiuchao Sui , Jie Fu , Huazhu Fu , Xiangde Luo , Yangqin Feng , Xinxing Xu , Yong Liu , Daniel Ting , Rick Siow Mong Goh

Deploying deep models in real-world scenarios remains challenging due to significant performance drops under distribution shifts between training and deployment environments. Test-Time Adaptation (TTA) has recently emerged as a promising…

Machine Learning · Computer Science 2025-12-01 Zixian Su , Jingwei Guo , Xi Yang , Qiufeng Wang , Kaizhu Huang

Often, constraints arise in deployment settings where even lightweight parameter updates e.g. parameter-efficient fine-tuning could induce model shift or tuning instability. We study test-time adaptation of foundation models for few-shot…

Machine Learning · Statistics 2026-02-04 Tahir Qasim Syed , Behraj Khan

In many real-world applications, continuous machine learning (ML) systems are crucial but prone to data drift, a phenomenon where discrepancies between historical training data and future test data lead to significant performance…

Machine Learning · Computer Science 2024-11-26 Vennela Yarabolu , Govind Waghmare , Sonia Gupta , Siddhartha Asthana

Real-world systems often encounter new data over time, which leads to experiencing target domain shifts. Existing Test-Time Adaptation (TTA) methods tend to apply computationally heavy and memory-intensive backpropagation-based approaches…

Computer Vision and Pattern Recognition · Computer Science 2024-04-26 Yanshuo Wang , Ali Cheraghian , Zeeshan Hayder , Jie Hong , Sameera Ramasinghe , Shafin Rahman , David Ahmedt-Aristizabal , Xuesong Li , Lars Petersson , Mehrtash Harandi

An unresolved problem in Deep Learning is the ability of neural networks to cope with domain shifts during test-time, imposed by commonly fixing network parameters after training. Our proposed method Meta Test-Time Training (MT3), however,…

Computer Vision and Pattern Recognition · Computer Science 2022-01-21 Alexander Bartler , Andre Bühler , Felix Wiewel , Mario Döbler , Bin Yang

Domain adaptation (DA) has drawn high interest for its capacity to adapt a model trained on labeled source data to perform well on unlabeled or weakly labeled target data from a different domain. Most common DA techniques require concurrent…

Computer Vision and Pattern Recognition · Computer Science 2022-05-18 Mathilde Bateson , Hoel Kervadec , Jose Dolz , Hervé Lombaert , Ismail Ben Ayed

3D Vision-Language Foundation Models (VLFMs) have shown strong generalization and zero-shot recognition capabilities in open-world point cloud processing tasks. However, these models often underperform in practical scenarios where data are…

Computer Vision and Pattern Recognition · Computer Science 2025-11-24 Mehran Tamjidi , Hamidreza Dastmalchi , Mohammadreza Alimoradijazi , Ali Cheraghian , Aijun An , Morteza Saberi

Cross-modal image translation remains brittle and inefficient. Standard diffusion approaches often rely on a single, global linear transfer between domains. We find that this shortcut forces the sampler to traverse off-manifold, high-cost…

Computer Vision and Pattern Recognition · Computer Science 2026-02-03 Zihao Wang , Yuzhou Chen , Shaogang Ren

Distributed tensor decomposition (DTD) is a fundamental data-analytics technique that extracts latent important properties from high-dimensional multi-attribute datasets distributed over edge devices. Conventionally its wireless…

Distributed, Parallel, and Cluster Computing · Computer Science 2023-05-16 Xu Chen , Erik G. Larsson , Kaibin Huang

Affordable 3D scanners often produce sparse and non-uniform point clouds that negatively impact downstream applications in robotic systems. While existing point cloud upsampling architectures have demonstrated promising results on standard…

Computer Vision and Pattern Recognition · Computer Science 2023-09-06 Ahmed Hatem , Yiming Qian , Yang Wang

As deep neural networks are increasingly deployed in dynamic, real-world environments, relying on a single static model is often insufficient. Changes in input data distributions caused by sensor drift or lighting variations necessitate…

Machine Learning · Computer Science 2025-09-26 Matteo Cardoni , Sam Leroux

Generalisation of deep neural networks becomes vulnerable when distribution shifts are encountered between train (source) and test (target) domain data. Few-shot domain adaptation mitigates this issue by adapting deep neural networks…

Computer Vision and Pattern Recognition · Computer Science 2023-08-10 Youssef Dawoud , Gustavo Carneiro , Vasileios Belagiannis

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

The domain discrepancy existed between medical images acquired in different situations renders a major hurdle in deploying pre-trained medical image segmentation models for clinical use. Since it is less possible to distribute training data…

Computer Vision and Pattern Recognition · Computer Science 2022-11-22 Shishuai Hu , Zehui Liao , Yong Xia