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Medical image segmentation is a critical yet challenging task, primarily due to the difficulty of obtaining extensive datasets of high-quality, expert-annotated images. Contrastive learning presents a potential but still problematic…

Computer Vision and Pattern Recognition · Computer Science 2025-04-22 Shuang Zeng , Lei Zhu , Xinliang Zhang , Hangzhou He , Yanye Lu

Long-tailed recognition with imbalanced class distribution naturally emerges in practical machine learning applications. Existing methods such as data reweighing, resampling, and supervised contrastive learning enforce the class balance…

Computer Vision and Pattern Recognition · Computer Science 2023-09-12 Chengkai Hou , Jieyu Zhang , Haonan Wang , Tianyi Zhou

In this work we present point-level region contrast, a self-supervised pre-training approach for the task of object detection. This approach is motivated by the two key factors in detection: localization and recognition. While accurate…

Computer Vision and Pattern Recognition · Computer Science 2022-04-20 Yutong Bai , Xinlei Chen , Alexander Kirillov , Alan Yuille , Alexander C. Berg

This paper targets the problem of multi-task dense prediction which aims to achieve simultaneous learning and inference on a bunch of multiple dense prediction tasks in a single framework. A core objective in design is how to effectively…

Computer Vision and Pattern Recognition · Computer Science 2023-07-18 Siwei Yang , Hanrong Ye , Dan Xu

The pre-training for language models captures general language understanding but fails to distinguish the affective impact of a particular context to a specific word. Recent works have sought to introduce contrastive learning (CL) for…

Computation and Language · Computer Science 2024-05-06 Jin Wang , Liang-Chih Yu , Xuejie Zhang

As a pioneering work, PointContrast conducts unsupervised 3D representation learning via leveraging contrastive learning over raw RGB-D frames and proves its effectiveness on various downstream tasks. However, the trend of large-scale…

Computer Vision and Pattern Recognition · Computer Science 2023-03-27 Xiaoyang Wu , Xin Wen , Xihui Liu , Hengshuang Zhao

Contrastive Language Image Pre-training (CLIP) has recently demonstrated success across various tasks due to superior feature representation empowered by image-text contrastive learning. However, the instance discrimination method used by…

Computer Vision and Pattern Recognition · Computer Science 2024-11-07 Xiang An , Kaicheng Yang , Xiangzi Dai , Ziyong Feng , Jiankang Deng

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

Contrastive learning methods in self-supervised settings have primarily focused on pre-training encoders, while decoders are typically introduced and trained separately for downstream dense prediction tasks. However, this conventional…

Computer Vision and Pattern Recognition · Computer Science 2026-03-05 Sébastien Quetin , Tapotosh Ghosh , Farhad Maleki

Exemplar-based image translation establishes dense correspondences between a conditional input and an exemplar (from two different domains) for leveraging detailed exemplar styles to achieve realistic image translation. Existing work builds…

Computer Vision and Pattern Recognition · Computer Science 2022-04-04 Fangneng Zhan , Yingchen Yu , Rongliang Wu , Jiahui Zhang , Shijian Lu , Changgong Zhang

We tackle open-world semantic segmentation, which aims at learning to segment arbitrary visual concepts in images, by using only image-text pairs without dense annotations. Existing open-world segmentation methods have shown impressive…

Computer Vision and Pattern Recognition · Computer Science 2023-03-28 Junbum Cha , Jonghwan Mun , Byungseok Roh

Unsupervised contrastive learning achieves great success in learning image representations with CNN. Unlike most recent methods that focused on improving accuracy of image classification, we present a novel contrastive learning approach,…

Computer Vision and Pattern Recognition · Computer Science 2021-07-26 Enze Xie , Jian Ding , Wenhai Wang , Xiaohang Zhan , Hang Xu , Peize Sun , Zhenguo Li , Ping Luo

Multi-domain learning (MDL) refers to simultaneously constructing a model or a set of models on datasets collected from different domains. Conventional approaches emphasize domain-shared information extraction and domain-private information…

Machine Learning · Computer Science 2023-07-31 Rui He , Shengcai Liu , Jiahao Wu , Shan He , Ke Tang

Contrastive learning has shown great potential in video representation learning. However, existing approaches fail to sufficiently exploit short-term motion dynamics, which are crucial to various down-stream video understanding tasks. In…

Computer Vision and Pattern Recognition · Computer Science 2022-08-15 Jingcheng Ni , Nan Zhou , Jie Qin , Qian Wu , Junqi Liu , Boxun Li , Di Huang

Multimodal contrastive learning (MCL) aims to embed data from different modalities in a shared embedding space. However, empirical evidence shows that representations from different modalities occupy completely separate regions of embedding…

Machine Learning · Computer Science 2025-10-09 Lingjie Yi , Raphael Douady , Chao Chen

Contrastive learning has emerged as a powerful method in deep learning, excelling at learning effective representations through contrasting samples from different distributions. However, dimensional collapse, where embeddings converge into…

Machine Learning · Computer Science 2025-12-10 Huanran Li , Manh Nguyen , Daniel Pimentel-Alarcón

Robot manipulation relying on learned object-centric descriptors became popular in recent years. Visual descriptors can easily describe manipulation task objectives, they can be learned efficiently using self-supervision, and they can…

Computer Vision and Pattern Recognition · Computer Science 2024-06-19 David B. Adrian , Andras Gabor Kupcsik , Markus Spies , Heiko Neumann

Matrix completion is a widely adopted framework in recommender systems, as predicting the missing entries in the user-item rating matrix enables a comprehensive understanding of user preferences. However, current graph neural network…

Information Retrieval · Computer Science 2025-06-13 Narges Nemati , Mostafa Haghir Chehreghani

Multi-task learning promises better model generalization on a target task by jointly optimizing it with an auxiliary task. However, the current practice requires additional labeling efforts for the auxiliary task, while not guaranteeing…

Computer Vision and Pattern Recognition · Computer Science 2022-10-14 Menelaos Kanakis , Thomas E. Huang , David Bruggemann , Fisher Yu , Luc Van Gool

Motion, as the most distinct phenomenon in a video to involve the changes over time, has been unique and critical to the development of video representation learning. In this paper, we ask the question: how important is the motion…

Computer Vision and Pattern Recognition · Computer Science 2022-01-12 Rui Li , Yiheng Zhang , Zhaofan Qiu , Ting Yao , Dong Liu , Tao Mei