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Although supervised learning has enabled high performance for image segmentation, it requires a large amount of labeled training data, which can be difficult to obtain in the medical imaging field. Self-supervised learning (SSL) methods…

Semi-supervised semantic segmentation requires the model to effectively propagate the label information from limited annotated images to unlabeled ones. A challenge for such a per-pixel prediction task is the large intra-class variation,…

Computer Vision and Pattern Recognition · Computer Science 2022-10-11 Hai-Ming Xu , Lingqiao Liu , Qiuchen Bian , Zhen Yang

Deep learning usually requires large amounts of labeled training data, but annotating data is costly and tedious. The framework of semi-supervised learning provides the means to use both labeled data and arbitrary amounts of unlabeled data…

Computer Vision and Pattern Recognition · Computer Science 2019-04-19 Christoph Baur , Shadi Albarqouni , Nassir Navab

This study established a feature-enhanced adversarial semi-supervised semantic segmentation model to automatically annotate pulmonary embolism lesion areas in computed tomography pulmonary angiogram (CTPA) images. In current studies, all of…

Image and Video Processing · Electrical Eng. & Systems 2022-04-12 Ting-Wei Cheng , Jerry Chang , Ching-Chun Huang , Chin Kuo , Yun-Chien Cheng

We present two practical improvement techniques for unsupervised segmentation learning. These techniques address limitations in the resolution and accuracy of predicted segmentation maps of recent state-of-the-art methods. Firstly, we…

Computer Vision and Pattern Recognition · Computer Science 2024-12-02 Alp Eren Sari , Francesco Locatello , Paolo Favaro

The advancement of deep learning has greatly improved supervised image classification. However, labeling data is costly, prompting research into unsupervised learning methods such as contrastive learning. In real-world scenarios, fully…

Artificial Intelligence · Computer Science 2026-01-09 Shogo Nakayama , Masahiro Okuda

This work considers semi-supervised segmentation as a dense prediction problem based on prototype vector correlation and proposes a simple way to represent each segmentation class with multiple prototypes. To avoid degenerate solutions, two…

Computer Vision and Pattern Recognition · Computer Science 2021-11-17 Jizong Peng , Christian Desrosiers , Marco Pedersoli

Semi-supervised learning via learning from limited quantities of labeled data has been investigated as an alternative to supervised counterparts. Maximizing knowledge gains from copious unlabeled data benefit semi-supervised learning…

Computer Vision and Pattern Recognition · Computer Science 2021-04-02 Ayaan Haque , Abdullah-Al-Zubaer Imran , Adam Wang , Demetri Terzopoulos

Training deep convolutional neural networks usually requires a large amount of labeled data. However, it is expensive and time-consuming to annotate data for medical image segmentation tasks. In this paper, we present a novel…

Computer Vision and Pattern Recognition · Computer Science 2019-07-17 Lequan Yu , Shujun Wang , Xiaomeng Li , Chi-Wing Fu , Pheng-Ann Heng

Semantic segmentation is an important and popular research area in computer vision that focuses on classifying pixels in an image based on their semantics. However, supervised deep learning requires large amounts of data to train models and…

Computer Vision and Pattern Recognition · Computer Science 2025-03-19 Lingyan Ran , Yali Li , Guoqiang Liang , Yanning Zhang

In order to leverage and profit from unlabelled data, semi-supervised frameworks for semantic segmentation based on consistency training have been proven to be powerful tools to significantly improve the performance of purely supervised…

Computer Vision and Pattern Recognition · Computer Science 2021-12-09 Max Coenen , Tobias Schack , Dries Beyer , Christian Heipke , Michael Haist

The analysis of carotid arteries, particularly plaques, in multi-sequence Magnetic Resonance Imaging (MRI) data is crucial for assessing the risk of atherosclerosis and ischemic stroke. In order to evaluate metrics and radiomic features,…

Image and Video Processing · Electrical Eng. & Systems 2025-07-11 Marie-Christine Pali , Christina Schwaiger , Malik Galijasevic , Valentin K. Ladenhauf , Stephanie Mangesius , Elke R. Gizewski

Disease diagnosis from medical images via supervised learning is usually dependent on tedious, error-prone, and costly image labeling by medical experts. Alternatively, semi-supervised learning and self-supervised learning offer…

Computer Vision and Pattern Recognition · Computer Science 2023-06-14 Attiano Purpura-Pontoniere , Demetri Terzopoulos , Adam Wang , Abdullah-Al-Zubaer Imran

Automated semantic segmentation of cell nuclei in microscopic images is crucial for disease diagnosis and tissue microenvironment analysis. Nonetheless, this task presents challenges due to the complexity and heterogeneity of cells. While…

Image and Video Processing · Electrical Eng. & Systems 2023-08-10 Zhuchen Shao , Sourya Sengupta , Hua Li , Mark A. Anastasio

For medical image segmentation, contrastive learning is the dominant practice to improve the quality of visual representations by contrasting semantically similar and dissimilar pairs of samples. This is enabled by the observation that…

Computer Vision and Pattern Recognition · Computer Science 2023-10-25 Chenyu You , Weicheng Dai , Yifei Min , Fenglin Liu , David A. Clifton , S Kevin Zhou , Lawrence Hamilton Staib , James S Duncan

Deep learning segmentation relies heavily on labeled data, but manual labeling is laborious and time-consuming, especially for volumetric images such as brain magnetic resonance imaging (MRI). While recent domain-randomization techniques…

Computer Vision and Pattern Recognition · Computer Science 2025-12-05 Bella Specktor-Fadida , Malte Hoffmann

Weakly supervised learning has emerged as an appealing alternative to alleviate the need for large labeled datasets in semantic segmentation. Most current approaches exploit class activation maps (CAMs), which can be generated from…

Computer Vision and Pattern Recognition · Computer Science 2022-01-17 Gaurav Patel , Jose Dolz

Recently, deep neural networks have greatly advanced histopathology image segmentation but usually require abundant annotated data. However, due to the gigapixel scale of whole slide images and pathologists' heavy daily workload, obtaining…

Computer Vision and Pattern Recognition · Computer Science 2023-03-13 Wentao Pan , Jiangpeng Yan , Hanbo Chen , Jiawei Yang , Zhe Xu , Xiu Li , Jianhua Yao

Accurate surgical phase recognition is crucial for computer-assisted interventions and surgical video analysis. Annotating long surgical videos is labor-intensive, driving research toward leveraging unlabeled data for strong performance…

High annotation costs are a major bottleneck for the training of semantic segmentation systems. Therefore, methods working with less annotation effort are of special interest. This paper studies the problem of semi-supervised semantic…

Computer Vision and Pattern Recognition · Computer Science 2021-03-22 Olga Zatsarynna , Johann Sawatzky , Juergen Gall