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This paper seeks to address the dense labeling problems where a significant fraction of the dataset can be pruned without sacrificing much accuracy. We observe that, on standard medical image segmentation benchmarks, the loss gradient…

Computer Vision and Pattern Recognition · Computer Science 2023-08-03 Yongkang He , Mingjin Chen , Zhijing Yang , Yongyi Lu

Dynamic contrast-enhanced magnetic resonance imaging (DCE-MRI) is essential for breast cancer diagnosis due to its ability to characterize tissue through contrast agent kinetics. However, traditional DCE-MRI protocols require multiple…

Computer Vision and Pattern Recognition · Computer Science 2025-01-28 Ruben D. Fonnegra , Maria Liliana Hernández , Juan C. Caicedo , Gloria M. Díaz

Recent years have witnessed the remarkable success of applying Graph machine learning (GML) to node/graph classification and link prediction. However, edge classification task that enjoys numerous real-world applications such as social…

Machine Learning · Computer Science 2024-06-19 Xueqi Cheng , Yu Wang , Yunchao Liu , Yuying Zhao , Charu C. Aggarwal , Tyler Derr

Deep convolutional neural networks have achieved remarkable progress on a variety of medical image computing tasks. A common problem when applying supervised deep learning methods to medical images is the lack of labeled data, which is very…

Computer Vision and Pattern Recognition · Computer Science 2020-05-12 Xiaomeng Li , Lequan Yu , Hao Chen , Chi-Wing Fu , Lei Xing , Pheng-Ann Heng

Data imbalance between common and rare diseases during model training often causes intelligent diagnosis systems to have biased predictions towards common diseases. The state-of-the-art approaches apply a two-stage learning framework to…

Computer Vision and Pattern Recognition · Computer Science 2022-07-15 Chenghua Zeng , Huijuan Lu , Kanghao Chen , Ruixuan Wang , Wei-Shi Zheng

The scarcity of labeled data often limits the application of supervised deep learning techniques for medical image segmentation. This has motivated the development of semi-supervised techniques that learn from a mixture of labeled and…

Computer Vision and Pattern Recognition · Computer Science 2019-11-05 Gerda Bortsova , Florian Dubost , Laurens Hogeweg , Ioannis Katramados , Marleen de Bruijne

Medical image segmentation is fundamental for computer-aided diagnostics, providing accurate delineation of anatomical structures and pathological regions. While common metrics such as Accuracy, DSC, IoU, and HD primarily quantify spatial…

Image and Video Processing · Electrical Eng. & Systems 2025-06-16 Wenhao Liang , Wei Zhang , Lin Yue , Miao Xu , Olaf Maennel , Weitong Chen

Medical image segmentation is crucial for clinical applications, but it is frequently disrupted by noisy annotations and ambiguous anatomical boundaries, limiting its application in real-world scenarios. Existing methods often directly…

Computer Vision and Pattern Recognition · Computer Science 2026-05-28 Chenyu Mu , Guihai Chen , Xun Yang , Erkun Yang , Cheng Deng

Deep learning algorithms can fare poorly when the training dataset suffers from heavy class-imbalance but the testing criterion requires good generalization on less frequent classes. We design two novel methods to improve performance in…

Machine Learning · Computer Science 2019-10-29 Kaidi Cao , Colin Wei , Adrien Gaidon , Nikos Arechiga , Tengyu Ma

Medical image segmentation has been widely recognized as a pivot procedure for clinical diagnosis, analysis, and treatment planning. However, the laborious and expensive annotation process lags down the speed of further advances.…

Computer Vision and Pattern Recognition · Computer Science 2022-05-02 Zhuowei Li , Zihao Liu , Zhiqiang Hu , Qing Xia , Ruiqin Xiong , Shaoting Zhang , Dimitris Metaxas , Tingting Jiang

Ensuring fairness in medical image segmentation is critical due to biases in imbalanced clinical data acquisition caused by demographic attributes (e.g., age, sex, race) and clinical factors (e.g., disease severity). To address these…

Image and Video Processing · Electrical Eng. & Systems 2025-05-29 Yujin Oh , Pengfei Jin , Sangjoon Park , Sekeun Kim , Siyeop Yoon , Kyungsang Kim , Jin Sung Kim , Xiang Li , Quanzheng Li

We propose a new loss formulation to further advance the multiclass segmentation of cluttered cells under weakly supervised conditions. We improve the separation of touching and immediate cells, obtaining sharp segmentation boundaries with…

Computer Vision and Pattern Recognition · Computer Science 2019-10-23 Fidel A. Guerrero Peña , Pedro D. Marrero Fernandez , Paul T. Tarr , Tsang Ing Ren , Elliot M. Meyerowitz , Alexandre Cunha

Imbalanced data distributions are prevalent in real-world scenarios, posing significant challenges in both imbalanced classification and imbalanced regression tasks. They often cause deep learning models to overfit in areas of high sample…

Machine Learning · Computer Science 2025-03-31 Guangkun Nie , Gongzheng Tang , Shenda Hong

Automated analysis of tissue sections allows a better understanding of disease biology and may reveal biomarkers that could guide prognosis or treatment selection. In digital pathology, less abundant cell types can be of biological…

Image and Video Processing · Electrical Eng. & Systems 2021-02-24 Yeman Brhane Hagos , Catherine SY Lecat , Dominic Patel , Lydia Lee , Thien-An Tran , Manuel Rodriguez- Justo , Kwee Yong , Yinyin Yuan

Recovering true signals from noisy measurements is a central challenge in inverse problems spanning medical imaging, geophysics, and signal processing. Current methods balance prior signal priors (regularization) with agreement with noisy…

Machine Learning · Computer Science 2026-03-18 George Webber , Andrew J. Reader

Recently, substantial research efforts in Deep Metric Learning (DML) focused on designing complex pairwise-distance losses, which require convoluted schemes to ease optimization, such as sample mining or pair weighting. The standard…

Machine Learning · Computer Science 2021-11-29 Malik Boudiaf , Jérôme Rony , Imtiaz Masud Ziko , Eric Granger , Marco Pedersoli , Pablo Piantanida , Ismail Ben Ayed

Contrastive learning is a major studied topic in metric learning. However, sampling effective contrastive pairs remains a challenge due to factors such as limited batch size, imbalanced data distribution, and the risk of overfitting. In…

Computer Vision and Pattern Recognition · Computer Science 2023-08-02 Bolun Cai , Pengfei Xiong , Shangxuan Tian

The development of deep convolutional neural network architecture is critical to the improvement of image classification task performance. A lot of studies of image classification based on deep convolutional neural network focus on the…

Computer Vision and Pattern Recognition · Computer Science 2019-08-02 Ke Zhang , Xinsheng Wang , Yurong Guo , Zhenbing Zhao , Zhanyu Ma , Tony X. Han

Recent methods for deep metric learning have been focusing on designing different contrastive loss functions between positive and negative pairs of samples so that the learned feature embedding is able to pull positive samples of the same…

Computer Vision and Pattern Recognition · Computer Science 2022-11-08 Shichao Kan , Zhiquan He , Yigang Cen , Yang Li , Vladimir Mladenovic , Zhihai He

In real-world clinical settings, data distributions evolve over time, with a continuous influx of new, limited disease cases. Therefore, class incremental learning is of great significance, i.e., deep learning models are required to learn…

Computer Vision and Pattern Recognition · Computer Science 2024-09-13 Yifei Yao , Hanrong Zhang