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In this paper, we propose a genuine group-level contrastive visual representation learning method whose linear evaluation performance on ImageNet surpasses the vanilla supervised learning. Two mainstream unsupervised learning schemes are…

计算机视觉与模式识别 · 计算机科学 2022-07-14 Bo Pang , Yifan Zhang , Yaoyi Li , Jia Cai , Cewu Lu

Referring Video Object Segmentation (RefVOS) seeks to segment target objects in videos guided by natural language descriptions, demanding both temporal reasoning and fine-grained visual comprehension. Existing sampling strategies for…

计算机视觉与模式识别 · 计算机科学 2025-10-13 Ming Dai , Sen Yang , Boqiang Duan , Wankou Yang , Jingdong Wang

Temporally contrastive representation learning induces a latent structure capable of reducing long-horizon planning to inference in a low-dimensional linear system. However, existing contrastive planning work learns a single latent geometry…

机器学习 · 计算机科学 2026-05-15 Yusuf Syed , Viraj Parimi , Brian Williams

Current top-leading solutions for video object segmentation (VOS) typically follow a matching-based regime: for each query frame, the segmentation mask is inferred according to its correspondence to previously processed and the first…

计算机视觉与模式识别 · 计算机科学 2023-04-14 Yurong Zhang , Liulei Li , Wenguan Wang , Rong Xie , Li Song , Wenjun Zhang

We propose a simple strategy for masking image patches during visual-language contrastive learning that improves the quality of the learned representations and the training speed. During each iteration of training, we randomly mask clusters…

计算机视觉与模式识别 · 计算机科学 2024-05-15 Zihao Wei , Zixuan Pan , Andrew Owens

Spatio-temporal representation learning is critical for video self-supervised representation. Recent approaches mainly use contrastive learning and pretext tasks. However, these approaches learn representation by discriminating sampled…

计算机视觉与模式识别 · 计算机科学 2021-12-21 Yujia Zhang , Lai-Man Po , Xuyuan Xu , Mengyang Liu , Yexin Wang , Weifeng Ou , Yuzhi Zhao , Wing-Yin Yu

Session-based recommendation aims to predict intents of anonymous users based on limited behaviors. With the ability in alleviating data sparsity, contrastive learning is prevailing in the task. However, we spot that existing contrastive…

信息检索 · 计算机科学 2025-06-06 Xiaokun Zhang , Bo Xu , Fenglong Ma , Zhizheng Wang , Liang Yang , Hongfei Lin

Existing contrastive language-image pre-training aims to learn a joint representation by matching abundant image-text pairs. However, the number of image-text pairs in medical datasets is usually orders of magnitude smaller than that in…

计算机视觉与模式识别 · 计算机科学 2024-01-04 Jiarun Liu , Hong-Yu Zhou , Cheng Li , Weijian Huang , Hao Yang , Yong Liang , Shanshan Wang

Contrastive learning has become one of the most impressive approaches for multi-modal representation learning. However, previous multi-modal works mainly focused on cross-modal understanding, ignoring in-modal contrastive learning, which…

机器学习 · 计算机科学 2024-09-17 Zhiyu Zhang , Da Liu , Shengqiang Liu , Anna Wang , Jie Gao , Yali Li

Limited availability of labeled data for machine learning on multimodal time-series extensively hampers progress in the field. Self-supervised learning (SSL) is a promising approach to learning data representations without relying on…

机器学习 · 计算机科学 2024-02-20 Shohreh Deldari , Dimitris Spathis , Mohammad Malekzadeh , Fahim Kawsar , Flora Salim , Akhil Mathur

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…

计算机视觉与模式识别 · 计算机科学 2023-03-27 Xiaoyang Wu , Xin Wen , Xihui Liu , Hengshuang Zhao

Predicting socioeconomic indicators within urban regions is crucial for fostering inclusivity, resilience, and sustainability in cities and human settlements. While pioneering studies have attempted to leverage multi-modal data for…

计算机视觉与模式识别 · 计算机科学 2026-01-30 Xixian Yong , Xiao Zhou

Space-time self-similarity (STSS), which captures visual correspondences across frames, provides an effective way to represent temporal dynamics for video understanding. In this work, we explore higher-order STSS and demonstrate how STSSs…

计算机视觉与模式识别 · 计算机科学 2026-04-23 Manjin Kim , Heeseung Kwon , Karteek Alahari , Minsu Cho

Unsupervised Multi-View Stereo (MVS) methods have achieved promising progress recently. However, previous methods primarily depend on the photometric consistency assumption, which may suffer from two limitations: indistinguishable regions…

计算机视觉与模式识别 · 计算机科学 2025-03-12 Kaiqiang Xiong , Rui Peng , Zhe Zhang , Tianxing Feng , Jianbo Jiao , Feng Gao , Ronggang Wang

Domain generalization is a critical challenge for machine learning systems. Prior domain generalization methods focus on extracting domain-invariant features across several stationary domains to enable generalization to new domains.…

机器学习 · 计算机科学 2024-01-17 Binghui Xie , Yongqiang Chen , Jiaqi Wang , Kaiwen Zhou , Bo Han , Wei Meng , James Cheng

Repurposing pre-trained diffusion models has been proven to be effective for NVS. However, these methods are mostly limited to a single object; directly applying such methods to compositional multi-object scenarios yields inferior results,…

计算机视觉与模式识别 · 计算机科学 2025-03-25 Ruijie Lu , Yixin Chen , Junfeng Ni , Baoxiong Jia , Yu Liu , Diwen Wan , Gang Zeng , Siyuan Huang

A common problem with segmentation of medical images using neural networks is the difficulty to obtain a significant number of pixel-level annotated data for training. To address this issue, we proposed a semi-supervised segmentation…

计算机视觉与模式识别 · 计算机科学 2023-02-23 Ange Lou , Kareem Tawfik , Xing Yao , Ziteng Liu , Jack Noble

In recent years, self-supervised learning has emerged as a promising approach in addressing the issues of label dependency and poor generalization performance in traditional GNNs. However, existing self-supervised methods have limited…

机器学习 · 计算机科学 2023-08-01 Mengyi Yuan , Minjie Chen , Xiang Li

Pretrained visual-language models have made significant advancements in multimodal tasks, including image-text retrieval. However, a major challenge in image-text matching lies in language bias, where models predominantly rely on language…

计算机视觉与模式识别 · 计算机科学 2025-01-22 Jiwan Chung , Seungwon Lim , Sangkyu Lee , Youngjae Yu

Semi-supervised video object segmentation (semi-VOS) is widely used in many applications. This task is tracking class-agnostic objects from a given target mask. For doing this, various approaches have been developed based on…

计算机视觉与模式识别 · 计算机科学 2021-04-06 Hyojin Park , Ganesh Venkatesh , Nojun Kwak