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Mitochondria segmentation in electron microscopy images is essential in neuroscience. However, due to the image degradation during the imaging process, the large variety of mitochondrial structures, as well as the presence of noise,…

Computer Vision and Pattern Recognition · Computer Science 2021-09-28 Zhili Li , Xuejin Chen , Jie Zhao , Zhiwei Xiong

Correlation exploitation is essential for efficient multi-user channel estimation (MUCE) in massive MIMO systems. However, the existing works either rely on presumed strong correlation or learn the correlation through large amount of…

Signal Processing · Electrical Eng. & Systems 2023-03-07 Yihan Xu , Lixiang Lian

State-of-the-art pre-trained image models predominantly adopt a two-stage approach: initial unsupervised pre-training on large-scale datasets followed by task-specific fine-tuning using Cross-Entropy loss~(CE). However, it has been…

Computer Vision and Pattern Recognition · Computer Science 2024-11-18 Zijun Long , George Killick , Lipeng Zhuang , Gerardo Aragon-Camarasa , Zaiqiao Meng , Richard Mccreadie

Accurate segmentation of multiple organs in Computed Tomography (CT) images plays a vital role in computer-aided diagnosis systems. While various supervised learning approaches have been proposed recently, these methods heavily depend on a…

Computer Vision and Pattern Recognition · Computer Science 2025-03-21 Yongzhi Huang , Fengjun Xi , Liyun Tu , Jinxin Zhu , Haseeb Hassan , Liyilei Su , Yun Peng , Jingyu Li , Jun Ma , Bingding Huang

Deep learning has potential to automate screening, monitoring and grading of disease in medical images. Pretraining with contrastive learning enables models to extract robust and generalisable features from natural image datasets,…

Obtaining annotations for 3D medical images is expensive and time-consuming, despite its importance for automating segmentation tasks. Although multi-task learning is considered an effective method for training segmentation models using…

Computer Vision and Pattern Recognition · Computer Science 2020-09-24 Junichiro Iwasawa , Yuichiro Hirano , Yohei Sugawara

Supervised deep learning-based methods yield accurate results for medical image segmentation. However, they require large labeled datasets for this, and obtaining them is a laborious task that requires clinical expertise.…

Computer Vision and Pattern Recognition · Computer Science 2021-12-20 Krishna Chaitanya , Ertunc Erdil , Neerav Karani , Ender Konukoglu

Foundational vision models, such as the Segment Anything Model (SAM), have achieved significant breakthroughs through extensive pre-training on large-scale visual datasets. Despite their general success, these models may fall short in…

Computer Vision and Pattern Recognition · Computer Science 2024-08-13 Ke Zhou , Zhongwei Qiu , Dongmei Fu

In this paper, we propose a novel selection strategy for contrastive learning for medical images. On natural images, contrastive learning uses augmentations to select positive and negative pairs for the contrastive loss. However, in the…

Computer Vision and Pattern Recognition · Computer Science 2026-02-24 Kiran Kokilepersaud , Mohit Prabhushankar , Ghassan AlRegib , Stephanie Trejo Corona , Charles Wykoff

Recent advancements in self-supervised learning have demonstrated that effective visual representations can be learned from unlabeled images. This has led to increased interest in applying self-supervised learning to the medical domain,…

Computer Vision and Pattern Recognition · Computer Science 2023-04-10 Xiangyi Yan , Junayed Naushad , Chenyu You , Hao Tang , Shanlin Sun , Kun Han , Haoyu Ma , James Duncan , Xiaohui Xie

The success of deep learning heavily depends on the availability of large labeled training sets. However, it is hard to get large labeled datasets in medical image domain because of the strict privacy concern and costly labeling efforts.…

Computer Vision and Pattern Recognition · Computer Science 2021-09-30 Dewen Zeng , Yawen Wu , Xinrong Hu , Xiaowei Xu , Haiyun Yuan , Meiping Huang , Jian Zhuang , Jingtong Hu , Yiyu Shi

In multi-label learning, leveraging contrastive learning to learn better representations faces a key challenge: selecting positive and negative samples and effectively utilizing label information. Previous studies selected positive and…

Machine Learning · Computer Science 2025-02-03 Ning Chen , Shen-Huan Lyu , Tian-Shuang Wu , Yanyan Wang , Bin Tang

Medical image segmentation is a fundamental yet challenging task due to the arduous process of acquiring large volumes of high-quality labeled data from experts. Contrastive learning offers a promising but still problematic solution to this…

Computer Vision and Pattern Recognition · Computer Science 2025-02-14 Shuang Zeng , Lei Zhu , Xinliang Zhang , Micky C Nnamdi , Wenqi Shi , J Ben Tamo , Qian Chen , Hangzhou He , Lujia Jin , Zifeng Tian , Qiushi Ren , Zhaoheng Xie , Yanye Lu

Dynamic contrast enhanced computed tomography (CT) is an imaging technique that provides critical information on the relationship of vascular structure and dynamics in the context of underlying anatomy. A key challenge for image processing…

For more clinical applications of deep learning models for medical image segmentation, high demands on labeled data and computational resources must be addressed. This study proposes a coarse-to-fine framework with two teacher models and a…

Image and Video Processing · Electrical Eng. & Systems 2022-11-14 Jae Won Choi

Deep anomaly detection methods learn representations that separate between normal and anomalous images. Although self-supervised representation learning is commonly used, small dataset sizes limit its effectiveness. It was previously shown…

Computer Vision and Pattern Recognition · Computer Science 2022-11-29 Tal Reiss , Yedid Hoshen

The task of labeling multiple organs for segmentation is a complex and time-consuming process, resulting in a scarcity of comprehensively labeled multi-organ datasets while the emergence of numerous partially labeled datasets. Current…

Computer Vision and Pattern Recognition · Computer Science 2024-07-18 Xiaoyu Liu , Linhao Qu , Ziyue Xie , Yonghong Shi , Zhijian Song

Imbalanced datasets pose a considerable challenge in training deep learning (DL) models for medical diagnostics, particularly for segmentation tasks. Imbalance may be associated with annotation quality limited annotated datasets, rare…

Image and Video Processing · Electrical Eng. & Systems 2025-04-08 Bashir Alam , Masa Cirkovic , Mete Harun Akcay , Md Kaf Shahrier , Sebastien Lafond , Hergys Rexha , Kurt Benke , Sepinoud Azimi , Janan Arslan

Semantic overlap among land-cover categories, highly imbalanced label distributions, and complex inter-class co-occurrence patterns constitute significant challenges for multi-label remote-sensing image retrieval. In this article,…

Computer Vision and Pattern Recognition · Computer Science 2026-04-07 Amna Amir , Erchan Aptoula

While contrast-enhanced CT (CECT) is standard for assessing abdominal aortic aneurysms (AAA), the required iodinated contrast agents pose significant risks, including nephrotoxicity, patient allergies, and environmental harm. To reduce…

Computer Vision and Pattern Recognition · Computer Science 2025-12-08 Yuxuan Ou , Ning Bi , Jiazhen Pan , Jiancheng Yang , Boliang Yu , Usama Zidan , Regent Lee , Vicente Grau