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Real-world data often have a long-tailed distribution, where the number of samples per class is not equal over training classes. The imbalanced data form a biased feature space, which deteriorates the performance of the recognition model.…

计算机视觉与模式识别 · 计算机科学 2022-11-23 Minki Jeong , Changick Kim

Lesion detection is a fundamental problem in the computer-aided diagnosis scheme for mammography. The advance of deep learning techniques have made a remarkable progress for this task, provided that the training data are large and…

图像与视频处理 · 电气工程与系统科学 2021-11-23 Zheren Li , Zhiming Cui , Sheng Wang , Yuji Qi , Xi Ouyang , Qitian Chen , Yuezhi Yang , Zhong Xue , Dinggang Shen , Jie-Zhi Cheng

Accurate segmentation of maxillary sinus in panoramic X-ray images is essential for dental diagnosis and surgical planning; however, this task remains relatively underexplored in dental imaging research. Structural overlap, ambiguous…

计算机视觉与模式识别 · 计算机科学 2026-04-23 Juha Park , Jiho Choi , Jong Pil Yun , Yong Chan Park , Han-Gyeol Yeom , Byung Do Lee , Sang Jun Lee

In recent years, self-supervised representation learning for skeleton-based action recognition has been developed with the advance of contrastive learning methods. The existing contrastive learning methods use normal augmentations to…

计算机视觉与模式识别 · 计算机科学 2021-12-08 Tianyu Guo , Hong Liu , Zhan Chen , Mengyuan Liu , Tao Wang , Runwei Ding

This study addresses the challenge of self-supervised learning for 3D mesh analysis. It presents an new approach that uses random walks as a form of data augmentation to generate diverse representations of mesh surfaces. Furthermore, it…

图形学 · 计算机科学 2025-03-04 Gal Yefet , Ayellet Tal

Semi-supervised learning via teacher-student network can train a model effectively on a few labeled samples. It enables a student model to distill knowledge from the teacher's predictions of extra unlabeled data. However, such knowledge…

计算机视觉与模式识别 · 计算机科学 2023-05-29 Hongkuan Shi , Zhiwei Wang , Ying Zhou , Dun Li , Xin Yang , Qiang Li

Large-scale volumetric medical images with annotation are rare, costly, and time prohibitive to acquire. Self-supervised learning (SSL) offers a promising pre-training and feature extraction solution for many downstream tasks, as it only…

计算机视觉与模式识别 · 计算机科学 2023-03-16 Ke Yu , Li Sun , Junxiang Chen , Max Reynolds , Tigmanshu Chaudhary , Kayhan Batmanghelich

The essence of unsupervised anomaly detection is to learn the compact distribution of normal samples and detect outliers as anomalies in testing. Meanwhile, the anomalies in real-world are usually subtle and fine-grained in a…

计算机视觉与模式识别 · 计算机科学 2022-07-20 Ye Zheng , Xiang Wang , Rui Deng , Tianpeng Bao , Rui Zhao , Liwei Wu

Self-supervised deep learning has accelerated 2D natural image analysis but remains difficult to translate into 3D MRI, where data are scarce and pre-trained 2D backbones cannot capture volumetric context. We present a…

计算机视觉与模式识别 · 计算机科学 2025-07-30 Liam Chalcroft , Jenny Crinion , Cathy J. Price , John Ashburner

Magnetic Resonance (MR) imaging allows the acquisition of images with different contrast properties depending on the acquisition protocol and the magnetic properties of tissues. Many MR brain image processing techniques, such as tissue…

计算机视觉与模式识别 · 计算机科学 2018-04-18 Samuel Remedios , Dzung L. Pham , John A. Butman , Snehashis Roy

Convolutional neural networks (CNN) for multi-class segmentation of medical images are widely used today. Especially models with multiple outputs that can separately predict segmentation classes (regions) without relying on a probabilistic…

计算机视觉与模式识别 · 计算机科学 2025-12-22 Denis Mikhailapov , Vladimir Berikov

A key feature of magnetic resonance (MR) imaging is its ability to manipulate how the intrinsic tissue parameters of the anatomy ultimately contribute to the contrast properties of the final, acquired image. This flexibility, however, can…

计算机视觉与模式识别 · 计算机科学 2018-11-20 Dzung L. Pham , Snehashis Roy

Self-supervised learning has proven to be an effective way to learn representations in domains where annotated labels are scarce, such as medical imaging. A widely adopted framework for this purpose is contrastive learning and it has been…

计算机视觉与模式识别 · 计算机科学 2024-02-23 Hugo Figueiras , Helena Aidos , Nuno Cruz Garcia

Contrastive learning has demonstrated promising performance in image and text domains either in a self-supervised or a supervised manner. In this work, we extend the supervised contrastive learning framework to clinical risk prediction…

机器学习 · 计算机科学 2021-10-12 Chengxi Zang , Fei Wang

Deep approaches to anomaly detection have recently shown promising results over shallow methods on large and complex datasets. Typically anomaly detection is treated as an unsupervised learning problem. In practice however, one may…

How can neural networks trained by contrastive learning extract features from the unlabeled data? Why does contrastive learning usually need much stronger data augmentations than supervised learning to ensure good representations? These…

机器学习 · 计算机科学 2021-07-06 Zixin Wen , Yuanzhi Li

While image data starts to enjoy the simple-but-effective self-supervised learning scheme built upon masking and self-reconstruction objective thanks to the introduction of tokenization procedure and vision transformer backbone,…

计算机视觉与模式识别 · 计算机科学 2024-06-11 Zhi-Yi Chin , Chieh-Ming Jiang , Ching-Chun Huang , Pin-Yu Chen , Wei-Chen Chiu

Contrastive learning has gained popularity and pushes state-of-the-art performance across numerous large-scale benchmarks. In contrastive learning, the contrastive loss function plays a pivotal role in discerning similarities between…

计算机视觉与模式识别 · 计算机科学 2025-12-03 Haojin Deng , Yimin Yang

Collecting large-scale medical datasets with fully annotated samples for training of deep networks is prohibitively expensive, especially for 3D volume data. Recent breakthroughs in self-supervised learning (SSL) offer the ability to…

计算机视觉与模式识别 · 计算机科学 2022-12-06 Duy M. H. Nguyen , Hoang Nguyen , Mai T. N. Truong , Tri Cao , Binh T. Nguyen , Nhat Ho , Paul Swoboda , Shadi Albarqouni , Pengtao Xie , Daniel Sonntag

The purpose of this study is to develop a computer-aided diagnosis system for classifying benign and malignant lung lesions, and to assist physicians in real-time analysis of radial probe endobronchial ultrasound (EBUS) videos. During the…

图像与视频处理 · 电气工程与系统科学 2023-05-09 Ching-Kai Lin , Chin-Wen Chen , Yun-Chien Cheng