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Self-supervised contrastive learning is among the recent representation learning methods that have shown performance gains in several downstream tasks including semantic segmentation. This paper evaluates strong data augmentation, one of…

Image and Video Processing · Electrical Eng. & Systems 2025-12-11 Azeez Idris , Abdurahman Ali Mohammed , Samuel Fanijo

Efficiently capturing the complex spatiotemporal representations from large-scale unlabeled traffic data remains to be a challenging task. In considering of the dilemma, this work employs the advanced contrastive learning and proposes a…

Machine Learning · Computer Science 2023-12-19 Lincan Li , Kaixiang Yang , Fengji Luo , Jichao Bi

Routine clinical imaging of the retina using optical coherence tomography (OCT) is performed with large slice spacing, resulting in highly anisotropic images and a sparsely scanned retina. Most learning-based methods circumvent the problems…

Computer Vision and Pattern Recognition · Computer Science 2026-03-13 Bennet Kahrs , Julia Andresen , Fenja Falta , Monty Santarossa , Heinz Handels , Timo Kepp

Unsupervised Change Detection (UCD) in multimodal Remote Sensing (RS) images remains a difficult challenge due to the inherent spatio-temporal complexity within data, and the heterogeneity arising from different imaging sensors. Inspired by…

Computer Vision and Pattern Recognition · Computer Science 2025-02-19 Lei Ding , Xibing Zuo , Danfeng Hong , Haitao Guo , Jun Lu , Zhihui Gong , Lorenzo Bruzzone

Longitudinal analysis has great potential to reveal developmental trajectories and monitor disease progression in medical imaging. This process relies on consistent and robust joint 4D segmentation. Traditional techniques are dependent on…

Machine Learning · Computer Science 2019-06-19 Malav Bateriwala , Pierrick Bourgeat

Self-supervised learning is a machine learning approach that generates implicit labels by learning underlined patterns and extracting discriminative features from unlabeled data without manual labelling. Contrastive learning introduces the…

Computer Vision and Pattern Recognition · Computer Science 2025-10-13 Asifullah Khan , Laiba Asmatullah , Anza Malik , Shahzaib Khan , Hamna Asif

Ensuring the realism of computer-generated synthetic images is crucial to deep neural network (DNN) training. Due to different semantic distributions between synthetic and real-world captured datasets, there exists semantic mismatch between…

Computer Vision and Pattern Recognition · Computer Science 2023-04-27 Ganning Zhao , Tingwei Shen , Suya You , C. -C. Jay Kuo

While contrastive approaches of self-supervised learning (SSL) learn representations by minimizing the distance between two augmented views of the same data point (positive pairs) and maximizing views from different data points (negative…

Machine Learning · Computer Science 2021-10-11 Yuandong Tian , Xinlei Chen , Surya Ganguli

Due to the scarcity of labeled data, Contrastive Self-Supervised Learning (SSL) frameworks have lately shown great potential in several medical image analysis tasks. However, the existing contrastive mechanisms are sub-optimal for dense…

Computer Vision and Pattern Recognition · Computer Science 2023-03-03 Hritam Basak , Soumitri Chattopadhyay , Rohit Kundu , Sayan Nag , Rammohan Mallipeddi

A new formulation of lateral imaging process of point-scanning optical coherence tomography (OCT) and a new differential contrast method designed by using this formulation are presented. The formulation is based on a mathematical sample…

Long-tailed semi-supervised learning poses a significant challenge in training models with limited labeled data exhibiting a long-tailed label distribution. Current state-of-the-art LTSSL approaches heavily rely on high-quality…

Machine Learning · Computer Science 2024-10-10 Zi-Hao Zhou , Siyuan Fang , Zi-Jing Zhou , Tong Wei , Yuanyu Wan , Min-Ling Zhang

Self-supervised learning (SSL) is now a standard way to pretrain medical image models, but performance is still mostly judged by downstream accuracy. For safety-critical screening tasks such as diabetic retinopathy grading, this is not…

Computer Vision and Pattern Recognition · Computer Science 2026-05-20 Muskaan Chopra , Lorenz Sparrenberg , Jan H. Terheyden , Rafet Sifa

Contrastive learning is commonly applied to self-supervised learning, and has been shown to outperform traditional approaches such as the triplet loss and N-pair loss. However, the requirement of large batch sizes and memory banks has made…

Computer Vision and Pattern Recognition · Computer Science 2022-08-15 Rishab Balasubramanian , Rupashree Dey , Kunal Rathore

Semi-supervised learning (SSL) has shown its effectiveness in learning effective 3D representation from a small amount of labelled data while utilizing large unlabelled data. Traditional semi-supervised approaches rely on the fundamental…

Computer Vision and Pattern Recognition · Computer Science 2024-09-24 Sneha Paul , Zachary Patterson , Nizar Bouguila

Molecular property prediction, crucial for early drug candidate screening and optimization, has seen advancements with deep learning-based methods. While deep learning-based methods have advanced considerably, they often fall short in fully…

Biomolecules · Quantitative Biology 2024-07-01 Taojie Kuang , Yiming Ren , Zhixiang Ren

Given the abundance of unlabeled Satellite Image Time Series (SITS) and the scarcity of labeled data, contrastive self-supervised pretraining emerges as a natural tool to leverage this vast quantity of unlabeled data. However, designing…

Computer Vision and Pattern Recognition · Computer Science 2025-06-24 Antoine Saget , Baptiste Lafabregue , Antoine Cornuéjols , Pierre Gançarski

This paper strives for self-supervised learning of a feature space suitable for skeleton-based action recognition. Our proposal is built upon learning invariances to input skeleton representations and various skeleton augmentations via a…

Computer Vision and Pattern Recognition · Computer Science 2021-08-10 Fida Mohammad Thoker , Hazel Doughty , Cees G. M. Snoek

Self-supervised learning (SSL) has emerged as a powerful technique for learning visual representations. While recent SSL approaches achieve strong results in global image understanding, they are limited in capturing the structured…

Computer Vision and Pattern Recognition · Computer Science 2025-08-28 Oussama Hadjerci , Antoine Letienne , Mohamed Abbas Hedjazi , Adel Hafiane

We present a new approach to instill 4D dynamic object priors into learned 3D representations by unsupervised pre-training. We observe that dynamic movement of an object through an environment provides important cues about its objectness,…

Computer Vision and Pattern Recognition · Computer Science 2022-07-25 Yujin Chen , Matthias Nießner , Angela Dai

Contrastive Learning (CL), a leading paradigm in Self-Supervised Learning (SSL), typically relies on pairs of data views generated through augmentation. While multiple augmentations per instance (more than two) improve generalization in…