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Test-time alignment (TTA) aims to adapt models to specific rewards during inference. However, existing methods tend to either under-optimise or over-optimise (reward hack) the target reward function. We propose Null-Text Test-Time Alignment…

Computer Vision and Pattern Recognition · Computer Science 2025-11-27 Taehoon Kim , Henry Gouk , Timothy Hospedales

Limited medical imaging datasets challenge deep learning models by increasing risks of overfitting and reduced generalization, particularly in Generative Adversarial Networks (GANs), where discriminators may overfit, leading to training…

Computer Vision and Pattern Recognition · Computer Science 2024-12-05 Adrian B. Chłopowiec , Adam R. Chłopowiec , Krzysztof Galus , Wojciech Cebula , Martin Tabakov

Deep models often suffer from severe performance drop due to the appearance shift in the real clinical setting. Most of the existing learning-based methods rely on images from multiple sites/vendors or even corresponding labels. However,…

Image and Video Processing · Electrical Eng. & Systems 2020-09-28 Xiaoqiong Huang , Zejian Chen , Xin Yang , Zhendong Liu , Yuxin Zou , Mingyuan Luo , Wufeng Xue , Dong Ni

Automatic segmentation of glioma and its subregions is of great significance for diagnosis, treatment and monitoring of disease. In this paper, an augmentation method, called TensorMixup, was proposed and applied to the three dimensional…

Image and Video Processing · Electrical Eng. & Systems 2022-02-21 Yu Wang , Yarong Ji , Hongbing Xiao

Continuous-Time Dynamic Graph (CTDG) precisely models evolving real-world relationships, drawing heightened interest in dynamic graph learning across academia and industry. However, existing CTDG models encounter challenges stemming from…

Machine Learning · Computer Science 2024-07-23 Yuxing Tian , Yiyan Qi , Aiwen Jiang , Qi Huang , Jian Guo

Deep learning-based models in medical imaging often struggle to generalize effectively to new scans due to data heterogeneity arising from differences in hardware, acquisition parameters, population, and artifacts. This limitation presents…

Image and Video Processing · Electrical Eng. & Systems 2023-08-09 Sebastian Nørgaard Llambias , Mads Nielsen , Mostafa Mehdipour Ghazi

Accurate detection and segmentation of brain tumors is critical for medical diagnosis. However, current supervised learning methods require extensively annotated images and the state-of-the-art generative models used in unsupervised methods…

Image and Video Processing · Electrical Eng. & Systems 2023-11-07 Wenxin Wang , Zhuo-Xu Cui , Guanxun Cheng , Chentao Cao , Xi Xu , Ziwei Liu , Haifeng Wang , Yulong Qi , Dong Liang , Yanjie Zhu

Recent text-to-image generation favors various forms of spatial conditions, e.g., masks, bounding boxes, and key points. However, the majority of the prior art requires form-specific annotations to fine-tune the original model, leading to…

Computer Vision and Pattern Recognition · Computer Science 2025-01-03 Z. Zhang , B. Liu , J. Bao , L. Chen , S. Zhu , J. Yu

The usage of medical image data for the training of large-scale machine learning approaches is particularly challenging due to its scarce availability and the costly generation of data annotations, typically requiring the engagement of…

Computer Vision and Pattern Recognition · Computer Science 2024-06-26 Joshua Niemeijer , Jan Ehrhardt , Hristina Uzunova , Heinz Handels

Rapid advancements in medical image segmentation performance have been significantly driven by the development of Convolutional Neural Networks (CNNs) and Vision Transformers (ViTs). These models follow the discriminative pixel-wise…

Image and Video Processing · Electrical Eng. & Systems 2024-08-21 Jiayu Huo , Xi Ouyang , Sébastien Ourselin , Rachel Sparks

Domain adaptation (DA) techniques help deep learning models generalize across data shifts for point cloud semantic segmentation (PCSS). Test-time adaptation (TTA) allows direct adaptation of a pre-trained model to unlabeled data during…

Computer Vision and Pattern Recognition · Computer Science 2024-07-09 Puzuo Wang , Wei Yao , Jie Shao , Zhiyi He

Due to the limitation of available labeled data, medical image segmentation is a challenging task for deep learning. Traditional data augmentation techniques have been shown to improve segmentation network performances by optimizing the…

Image and Video Processing · Electrical Eng. & Systems 2022-11-03 Kevin Ginsburger

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

Biomedical image segmentation is crucial for accurately diagnosing and analyzing various diseases. However, Convolutional Neural Networks (CNNs) and Transformers, the most commonly used architectures for this task, struggle to effectively…

Image and Video Processing · Electrical Eng. & Systems 2024-12-09 Rong Zhou , Zhengqing Yuan , Zhiling Yan , Weixiang Sun , Kai Zhang , Yiwei Li , Yanfang Ye , Xiang Li , Lifang He , Lichao Sun

Large-scale, big-variant, high-quality data are crucial for developing robust and successful deep-learning models for medical applications since they potentially enable better generalization performance and avoid overfitting. However, the…

Computer Vision and Pattern Recognition · Computer Science 2024-12-17 Zheyuan Zhang , Lanhong Yao , Bin Wang , Debesh Jha , Gorkem Durak , Elif Keles , Alpay Medetalibeyoglu , Ulas Bagci

Analyzing medical data to find abnormalities is a time-consuming and costly task, particularly for rare abnormalities, requiring tremendous efforts from medical experts. Artificial intelligence has become a popular tool for the automatic…

Test-time augmentation (TTA) has become a promising approach for mitigating data sparsity in sequential recommendation by improving inference accuracy without requiring costly model retraining. However, existing TTA methods typically rely…

Information Retrieval · Computer Science 2026-04-20 Xibo Li , Liang Zhang

We propose a model-agnostic, progressive test-time energy adaptation approach for medical image segmentation. Maintaining model performance across diverse medical datasets is challenging, as distribution shifts arise from inconsistent…

Computer Vision and Pattern Recognition · Computer Science 2025-03-24 Xiaoran Zhang , Byung-Woo Hong , Hyoungseob Park , Daniel H. Pak , Anne-Marie Rickmann , Lawrence H. Staib , James S. Duncan , Alex Wong

Despite the growing integration of deep models into mobile terminals, the accuracy of these models declines significantly due to various deployment interferences. Test-time adaptation (TTA) has emerged to improve the performance of deep…

Computer Vision and Pattern Recognition · Computer Science 2025-03-27 Ke Ma , Jiaqi Tang , Bin Guo , Fan Dang , Sicong Liu , Zhui Zhu , Lei Wu , Cheng Fang , Ying-Cong Chen , Zhiwen Yu , Yunhao Liu

Medical image segmentation is a fundamental task in numerous medical engineering applications. Recently, language-guided segmentation has shown promise in medical scenarios where textual clinical reports are readily available as semantic…

Computer Vision and Pattern Recognition · Computer Science 2026-01-23 Mingjian Li , Mingyuan Meng , Shuchang Ye , Michael Fulham , Lei Bi , Jinman Kim