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Automated medical image segmentation using deep neural networks typically requires substantial supervised training. However, these models fail to generalize well across different imaging modalities. This shortcoming, amplified by the…

Image and Video Processing · Electrical Eng. & Systems 2023-08-01 Malo Alefsen de Boisredon d'Assier , Eugene Vorontsov , Samuel Kadoury

Modeling spatiotemporal brain dynamics from high-dimensional data, such as functional Magnetic Resonance Imaging (fMRI), is a formidable task in neuroscience. Existing approaches for fMRI analysis utilize hand-crafted features, but the…

Computer Vision and Pattern Recognition · Computer Science 2023-11-01 Peter Yongho Kim , Junbeom Kwon , Sunghwan Joo , Sangyoon Bae , Donggyu Lee , Yoonho Jung , Shinjae Yoo , Jiook Cha , Taesup Moon

Existing deep learning methods for remote sensing image fusion often suffer from poor generalization when applied to unseen datasets due to the limited availability of real training data and the domain gap between different satellite…

Computer Vision and Pattern Recognition · Computer Science 2025-12-03 Yongchuan Cui , Peng Liu , Yi Zeng

Unsupervised domain adaptation (UDA) aims to learn a model trained on source domain and performs well on unlabeled target domain. In medical image segmentation field, most existing UDA methods depend on adversarial learning to address the…

Computer Vision and Pattern Recognition · Computer Science 2022-11-29 Shaolei Liu , Siqi Yin , Linhao Qu , Manning Wang

In the field of food image processing, efficient semantic segmentation techniques are crucial for industrial applications. However, existing large-scale Transformer-based models (such as FoodSAM) face challenges in meeting practical…

Computer Vision and Pattern Recognition · Computer Science 2025-07-29 Haotian Chen , Zhiyong Xiao

Spatio-temporal action localization is an important problem in computer vision that involves detecting where and when activities occur, and therefore requires modeling of both spatial and temporal features. This problem is typically…

Computer Vision and Pattern Recognition · Computer Science 2020-10-20 Nakul Agarwal , Yi-Ting Chen , Behzad Dariush , Ming-Hsuan Yang

Methods: Nine SSL methods spanning four pretext-task families were pretrained from scratch using the same 10{,}412 3D CT scans (1.89~M 2D axial slices) covering varied disease sites. The pretrained Swin Transformer encoder from each method…

Computer Vision and Pattern Recognition · Computer Science 2026-05-19 Jue Jiang , Harini Veeraraghavan

Data fusion enables powerful and generalizable analyses across multiple sources. However, different data collection capacities across different sources lead to blockwise missingness (BM), which poses challenges in practice. Meanwhile, the…

Methodology · Statistics 2025-12-09 Yiming Li , Ying Wei , Molei Liu

Self-supervised learning (SSL) is an approach to extract useful feature representations from unlabeled data, and enable fine-tuning on downstream tasks with limited labeled examples. Self-pretraining is a SSL approach that uses the curated…

Image and Video Processing · Electrical Eng. & Systems 2024-05-15 Jue Jiang , Aneesh Rangnekar , Harini Veeraraghavan

Recent advances in unsupervised learning have demonstrated the ability of large vision models to achieve promising results on downstream tasks by pre-training on large amount of unlabelled data. Such pre-training techniques have also been…

Computer Vision and Pattern Recognition · Computer Science 2024-03-11 Mubashir Noman , Muzammal Naseer , Hisham Cholakkal , Rao Muhammad Anwar , Salman Khan , Fahad Shahbaz Khan

Unsupervised Domain Adaptation (UDA), a branch of transfer learning where labels for target samples are unavailable, has been widely researched and developed in recent years with the help of adversarially trained models. Although existing…

Computer Vision and Pattern Recognition · Computer Science 2022-01-31 Changwei Xu , Jianfei Yang , Haoran Tang , Han Zou , Cheng Lu , Tianshuo Zhang

In this work, we tackle the problem of unsupervised domain adaptation (UDA) for video action recognition. Our approach, which we call UNITE, uses an image teacher model to adapt a video student model to the target domain. UNITE first…

Computer Vision and Pattern Recognition · Computer Science 2025-03-06 Arun Reddy , William Paul , Corban Rivera , Ketul Shah , Celso M. de Melo , Rama Chellappa

Masked image modeling (MIM) with transformer backbones has recently been exploited as a powerful self-supervised pre-training technique. The existing MIM methods adopt the strategy to mask random patches of the image and reconstruct the…

Computer Vision and Pattern Recognition · Computer Science 2024-02-05 Zhaohu Xing , Lei Zhu , Lequan Yu , Zhiheng Xing , Liang Wan

Domain shift is a common problem in clinical applications, where the training images (source domain) and the test images (target domain) are under different distributions. Unsupervised Domain Adaptation (UDA) techniques have been proposed…

Image and Video Processing · Electrical Eng. & Systems 2023-09-06 Jiajin Zhang , Hanqing Chao , Amit Dhurandhar , Pin-Yu Chen , Ali Tajer , Yangyang Xu , Pingkun Yan

Foundational models are trained on extensive datasets to capture the general trends of a domain. However, in medical imaging, the scarcity of data makes pre-training for every domain, modality, or task challenging. Instead of building…

Computer Vision and Pattern Recognition · Computer Science 2025-11-17 Mohammad Areeb Qazi , Munachiso S Nwadike , Ibrahim Almakky , Mohammad Yaqub , Numan Saeed

Deep learning-based medical image segmentation is increasingly used to support clinical diagnosis and develop new treatment strategies. However, model performance remains limited by the scarcity of high-quality annotated data and…

Computer Vision and Pattern Recognition · Computer Science 2026-05-06 Nathan Molinier , Hendrik Möller , Thomas Dagonneau , Anna Curto-Vilalta , Robert Graf , Matan Atad , Daniel Rueckert , Jan S. Kirschke , Julien Cohen-Adad

Diffusion Policies have become widely used in Imitation Learning, offering several appealing properties, such as generating multimodal and discontinuous behavior. As models are becoming larger to capture more complex capabilities, their…

Machine Learning · Computer Science 2024-12-18 Moritz Reuss , Jyothish Pari , Pulkit Agrawal , Rudolf Lioutikov

Liver segmentation on images acquired using computed tomography (CT) and magnetic resonance imaging (MRI) plays an important role in clinical management of liver diseases. Compared to MRI, CT images of liver are more abundant and readily…

Computer Vision and Pattern Recognition · Computer Science 2022-02-25 Jin Hong , Simon Chun-Ho Yu , Weitian Chen

Deep learning models in computational pathology often fail to generalize across cohorts and institutions due to domain shift. Existing approaches either fail to leverage unlabeled data from the target domain or rely on image-to-image…

Computer Vision and Pattern Recognition · Computer Science 2026-01-27 Tengyue Zhang , Ruiwen Ding , Luoting Zhuang , Yuxiao Wu , Erika F. Rodriguez , William Hsu

Multimodal Image Fusion (MMIF) aims to integrate complementary information from different imaging modalities to overcome the limitations of individual sensors. It enhances image quality and facilitates downstream applications such as remote…

Computer Vision and Pattern Recognition · Computer Science 2025-08-22 Mengyu Wang , Zhenyu Liu , Kun Li , Yu Wang , Yuwei Wang , Yanyan Wei , Fei Wang