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Self-supervised instance discrimination is an effective contrastive pretext task to learn feature representations and address limited medical image annotations. The idea is to make features of transformed versions of the same images similar…

Computer Vision and Pattern Recognition · Computer Science 2022-11-17 Yejia Zhang , Xinrong Hu , Nishchal Sapkota , Yiyu Shi , Danny Z. Chen

Foundation models have recently gained attention within the field of machine learning thanks to its efficiency in broad data processing. While researchers had attempted to extend this success to time series models, the main challenge is…

Machine Learning · Computer Science 2023-11-22 Trang H. Tran , Lam M. Nguyen , Kyongmin Yeo , Nam Nguyen , Roman Vaculin

Despite recent progress in video and language representation learning, the weak or sparse correspondence between the two modalities remains a bottleneck in the area. Most video-language models are trained via pair-level loss to predict…

Machine Learning · Computer Science 2022-10-12 Zixu Wang , Yujie Zhong , Yishu Miao , Lin Ma , Lucia Specia

We address the problem of unsupervised classification of players in a team sport according to their team affiliation, when jersey colours and design are not known a priori. We adopt a contrastive learning approach in which an embedding…

Computer Vision and Pattern Recognition · Computer Science 2021-05-05 Maria Koshkina , Hemanth Pidaparthy , James H. Elder

We present a new self-supervised pre-training of Vision Transformers for dense prediction tasks. It is based on a contrastive loss across views that compares pixel-level representations to global image representations. This strategy…

Computer Vision and Pattern Recognition · Computer Science 2022-06-08 Jaonary Rabarisoa , Valentin Belissen , Florian Chabot , Quoc-Cuong Pham

Unsupervised learning methods for feature extraction are becoming more and more popular. We combine the popular contrastive learning method (prototypical contrastive learning) and the classic representation learning method (autoencoder) to…

Computer Vision and Pattern Recognition · Computer Science 2022-05-11 Zeyu Cao , Xiaorun Li , Liaoying Zhao

Recent multimodal models such as Contrastive Language-Image Pre-training (CLIP) have shown remarkable ability to align visual and linguistic representations. However, domains where small visual differences carry large semantic significance,…

Computer Vision and Pattern Recognition · Computer Science 2026-03-03 Hiroshi Sasaki

Upscaled video detection is a helpful tool in multimedia forensics, but it is a challenging task that involves various upscaling and compression algorithms. There are many resolution-enhancement methods, including interpolation and…

Computer Vision and Pattern Recognition · Computer Science 2022-05-24 Viacheslav Meshchaninov , Ivan Molodetskikh , Dmitriy Vatolin

In this work, we address the challenging video scene parsing problem by developing effective representation learning methods given limited parsing annotations. In particular, we contribute two novel methods that constitute a unified parsing…

Computer Vision and Pattern Recognition · Computer Science 2016-12-14 Xiaojie Jin , Xin Li , Huaxin Xiao , Xiaohui Shen , Zhe Lin , Jimei Yang , Yunpeng Chen , Jian Dong , Luoqi Liu , Zequn Jie , Jiashi Feng , Shuicheng Yan

Given a collection of untrimmed and unsegmented videos, video corpus moment retrieval (VCMR) is to retrieve a temporal moment (i.e., a fraction of a video) that semantically corresponds to a given text query. As video and text are from two…

Computation and Language · Computer Science 2021-05-14 Hao Zhang , Aixin Sun , Wei Jing , Guoshun Nan , Liangli Zhen , Joey Tianyi Zhou , Rick Siow Mong Goh

Contrastive learning has moved the state of the art for many tasks in computer vision and information retrieval in recent years. This poster is the first work that applies supervised contrastive learning to the task of product matching in…

Machine Learning · Computer Science 2022-05-03 Ralph Peeters , Christian Bizer

While supervised learning has enabled great progress in many applications, unsupervised learning has not seen such widespread adoption, and remains an important and challenging endeavor for artificial intelligence. In this work, we propose…

Machine Learning · Computer Science 2019-01-23 Aaron van den Oord , Yazhe Li , Oriol Vinyals

Contrastive learning has demonstrated great success in representation learning, especially for image classification tasks. However, there is still a shortage in studies targeting regression tasks, and more specifically applications on…

Computer Vision and Pattern Recognition · Computer Science 2026-02-12 Mohamad Dhaini , Paul Honeine , Maxime Berar , Antonin Van Exem

This work presents an unsupervised learning based approach to the ubiquitous computer vision problem of image matching. We start from the insight that the problem of frame-interpolation implicitly solves for inter-frame correspondences.…

Computer Vision and Pattern Recognition · Computer Science 2016-03-30 Gucan Long , Laurent Kneip , Jose M. Alvarez , Hongdong Li

Semantic representation is of great benefit to the video text tracking(VTT) task that requires simultaneously classifying, detecting, and tracking texts in the video. Most existing approaches tackle this task by appearance similarity in…

Computer Vision and Pattern Recognition · Computer Science 2022-08-22 Zhuang Li , Weijia Wu , Mike Zheng Shou , Jiahong Li , Size Li , Zhongyuan Wang , Hong Zhou

Unsupervised learning has recently made exceptional progress because of the development of more effective contrastive learning methods. However, CNNs are prone to depend on low-level features that humans deem non-semantic. This dependency…

Computer Vision and Pattern Recognition · Computer Science 2022-01-04 Songwei Ge , Shlok Mishra , Haohan Wang , Chun-Liang Li , David Jacobs

This paper addresses the challenges in representation learning of 3D shape features by investigating state-of-the-art backbones paired with both contrastive supervised and self-supervised learning objectives. Computer vision methods…

Computer Vision and Pattern Recognition · Computer Science 2025-10-24 Márcus Vinícius Lobo Costa , Sherlon Almeida da Silva , Bárbara Caroline Benato , Leo Sampaio Ferraz Ribeiro , Moacir Antonelli Ponti

Self-supervised contrastive representation learning has proved incredibly successful in the vision and natural language domains, enabling state-of-the-art performance with orders of magnitude less labeled data. However, such methods are…

Machine Learning · Computer Science 2022-03-17 Dara Bahri , Heinrich Jiang , Yi Tay , Donald Metzler

Prior works on action representation learning mainly focus on designing various architectures to extract the global representations for short video clips. In contrast, many practical applications such as video alignment have strong demand…

Computer Vision and Pattern Recognition · Computer Science 2022-03-29 Minghao Chen , Fangyun Wei , Chong Li , Deng Cai

Object Detection, a fundamental computer vision problem, has paramount importance in smart camera systems. However, a truly reliable camera system could be achieved if and only if the underlying object detection component is robust enough…

Computer Vision and Pattern Recognition · Computer Science 2022-08-23 Ujjal Kr Dutta