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This paper presents Prototypical Contrastive Learning (PCL), an unsupervised representation learning method that addresses the fundamental limitations of instance-wise contrastive learning. PCL not only learns low-level features for the…

Computer Vision and Pattern Recognition · Computer Science 2021-03-31 Junnan Li , Pan Zhou , Caiming Xiong , Steven C. H. Hoi

With the abundance of industrial datasets, imbalanced classification has become a common problem in several application domains. Oversampling is an effective method to solve imbalanced classification. One of the main challenges of the…

Machine Learning · Computer Science 2022-07-18 Min Qian , Yan-Fu Li

Weakly supervised text-based person retrieval seeks to retrieve images of a target person using textual descriptions, without relying on identity annotations and is more challenging and practical. The primary challenge is the intra-class…

Computer Vision and Pattern Recognition · Computer Science 2025-08-19 Xinpeng Zhao , Yanwei Zheng , Chuanlin Lan , Xiaowei Zhang , Bowen Huang , Jibin Yang , Dongxiao Yu

In this paper, we propose an effective knowledge transfer framework to boost the weakly supervised object detection accuracy with the help of an external fully-annotated source dataset, whose categories may not overlap with the target…

Computer Vision and Pattern Recognition · Computer Science 2020-07-17 Yuanyi Zhong , Jianfeng Wang , Jian Peng , Lei Zhang

Deep learning for detecting objects in remotely sensed imagery can enable new technologies for important applications including mitigating climate change. However, these models often require large datasets labeled with bounding box…

Computer Vision and Pattern Recognition · Computer Science 2023-11-30 Ji Hun Wang , Jeremy Irvin , Beri Kohen Behar , Ha Tran , Raghav Samavedam , Quentin Hsu , Andrew Y. Ng

ROI extraction is an active but challenging task in remote sensing because of the complicated landform, the complex boundaries and the requirement of annotations. Weakly supervised learning (WSL) aims at learning a mapping from input image…

Computer Vision and Pattern Recognition · Computer Science 2023-05-11 Lingfeng He , Mengze Xu , Jie Ma

Accurate lesion classification in Wireless Capsule Endoscopy (WCE) images is vital for early diagnosis and treatment of gastrointestinal (GI) cancers. However, this task is confronted with challenges like tiny lesions and background…

Computer Vision and Pattern Recognition · Computer Science 2024-01-12 Kunpeng Qiu , Zhiying Zhou , Yongxin Guo

Weakly Supervised Semantic Segmentation (WSSS) using only image-level labels has gained significant attention due to its cost-effectiveness. The typical framework involves using image-level labels as training data to generate pixel-level…

Computer Vision and Pattern Recognition · Computer Science 2024-11-28 Wangyu Wu , Tianhong Dai , Zhenhong Chen , Xiaowei Huang , Jimin Xiao , Fei Ma , Renrong Ouyang

In this paper, we develop a new weakly-supervised learning algorithm to learn to segment cancerous regions in histopathology images. Our work is under a multiple instance learning framework (MIL) with a new formulation, deep weak…

Computer Vision and Pattern Recognition · Computer Science 2017-08-30 Zhipeng Jia , Xingyi Huang , Eric I-Chao Chang , Yan Xu

This paper presents a DETR-based method for cross-domain weakly supervised object detection (CDWSOD), aiming at adapting the detector from source to target domain through weak supervision. We think DETR has strong potential for CDWSOD due…

Computer Vision and Pattern Recognition · Computer Science 2023-04-17 Zongheng Tang , Yifan Sun , Si Liu , Yi Yang

Developing a robust object tracker is a challenging task due to factors such as occlusion, motion blur, fast motion, illumination variations, rotation, background clutter, low resolution and deformation across the frames. In the literature,…

Computer Vision and Pattern Recognition · Computer Science 2024-06-17 Sandeep Singh Sengar

Pointwise localization allows more precise localization and accurate interpretability, compared to bounding box, in applications where objects are highly unstructured such as in medical domain. In this work, we focus on weakly supervised…

Computer Vision and Pattern Recognition · Computer Science 2021-01-22 Soufiane Belharbi , Jérôme Rony , Jose Dolz , Ismail Ben Ayed , Luke McCaffrey , Eric Granger

Existing studies in weakly supervised semantic segmentation (WSSS) have utilized class activation maps (CAMs) to localize the class objects. However, since a classification loss is insufficient for providing precise object regions, CAMs…

Computer Vision and Pattern Recognition · Computer Science 2021-12-13 Sung-Hoon Yoon , Hyeokjun Kweon , Jaeseok Jeong , Hyeonseong Kim , Shinjeong Kim , Kuk-Jin Yoon

Weakly supervised object localization (WSOL) aims to localize objects using only image-level labels. Recently a new paradigm has emerged by generating a foreground prediction map (FPM) to achieve localization task. Existing FPM-based…

Computer Vision and Pattern Recognition · Computer Science 2022-04-05 Pingyu Wu , Wei Zhai , Yang Cao

While motion has garnered attention in various tasks, its potential as a modality for weakly-supervised object detection (WSOD) in static images remains unexplored. Our study introduces an approach to enhance WSOD methods by integrating…

Computer Vision and Pattern Recognition · Computer Science 2024-09-17 Cagri Gungor , Adriana Kovashka

Weakly Supervised Semantic Segmentation (WSSS) with image-level labels aims to achieve pixel-level predictions using Class Activation Maps (CAMs). Recently, Contrastive Language-Image Pre-training (CLIP) has been introduced in WSSS.…

Computer Vision and Pattern Recognition · Computer Science 2025-04-16 Zhiwei Yang , Yucong Meng , Kexue Fu , Feilong Tang , Shuo Wang , Zhijian Song

Weakly-supervised object localization (WSOL) enables finding an object using a dataset without any localization information. By simply training a classification model using only image-level annotations, the feature map of the model can be…

Computer Vision and Pattern Recognition · Computer Science 2021-07-29 Jeesoo Kim , Junsuk Choe , Sangdoo Yun , Nojun Kwak

Due to the scarcity of sampling data in reality, few-shot object detection (FSOD) has drawn more and more attention because of its ability to quickly train new detection concepts with less data. However, there are still failure…

Computer Vision and Pattern Recognition · Computer Science 2023-12-22 Zeyu Shangguan , Lian Huai , Tong Liu , Xingqun Jiang

Contrastive learning has proven to be highly efficient and adaptable in shaping representation spaces across diverse modalities by pulling similar samples together and pushing dissimilar ones apart. However, two key limitations persist: (1)…

Machine Learning · Computer Science 2025-12-08 Ziwen Wang , Jiajun Fan , Thao Nguyen , Heng Ji , Ge Liu

Weakly-Supervised Camouflaged Object Detection (WSCOD) has gained popularity for its promise to train models with weak labels to segment objects that visually blend into their surroundings. Recently, some methods using sparsely-annotated…

Computer Vision and Pattern Recognition · Computer Science 2025-01-13 Tsui Qin Mok , Shuyong Gao , Haozhe Xing , Miaoyang He , Yan Wang , Wenqiang Zhang