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The ground-to-satellite image matching/retrieval was initially proposed for city-scale ground camera localization. This work addresses the problem of improving camera pose accuracy by ground-to-satellite image matching after a coarse…

Computer Vision and Pattern Recognition · Computer Science 2024-09-11 Yujiao Shi , Hongdong Li , Akhil Perincherry , Ankit Vora

Weakly supervised semantic segmentation (WSSS) trains dense pixel-level segmentation models from partial or coarse annotations such as bounding boxes, scribbles, or image-level tags. While recent work leverages foundation models such as the…

Computer Vision and Pattern Recognition · Computer Science 2026-05-14 Stefano Colamonaco , Andrei-Bogdan Florea , Jaron Maene

Phrase grounding, the problem of associating image regions to caption words, is a crucial component of vision-language tasks. We show that phrase grounding can be learned by optimizing word-region attention to maximize a lower bound on…

Computer Vision and Pattern Recognition · Computer Science 2020-08-07 Tanmay Gupta , Arash Vahdat , Gal Chechik , Xiaodong Yang , Jan Kautz , Derek Hoiem

Weakly Supervised Semantic Segmentation (WSSS) with image level labels aims to produce pixel level predictions without requiring dense annotations. While recent approaches have leveraged generative models to augment existing data, they…

Computer Vision and Pattern Recognition · Computer Science 2025-12-18 Wangyu Wu , Zhenhong Chen , Xiaowei Huang , Fei Ma , Jimin Xiao

We consider weakly supervised segmentation where only a fraction of pixels have ground truth labels (scribbles) and focus on a self-labeling approach optimizing relaxations of the standard unsupervised CRF/Potts loss on unlabeled pixels.…

Computer Vision and Pattern Recognition · Computer Science 2025-07-03 Zhongwen Zhang , Yuri Boykov

Region proposal mechanisms are essential for existing deep learning approaches to object detection in images. Although they can generally achieve a good detection performance under normal circumstances, their recall in a scene with extreme…

Computer Vision and Pattern Recognition · Computer Science 2019-05-28 Zehua Cheng , Yuxiang Wu , Zhenghua Xu , Thomas Lukasiewicz , Weiyang Wang

In the weakly supervised localization setting, supervision is given as an image-level label. We propose to employ an image classifier $f$ and to train a generative network $g$ that outputs, given the input image, a per-pixel weight map that…

Computer Vision and Pattern Recognition · Computer Science 2021-11-30 Tal Shaharabany , Lior Wolf

Though image-level weakly supervised semantic segmentation (WSSS) has achieved great progress with Class Activation Maps (CAMs) as the cornerstone, the large supervision gap between classification and segmentation still hampers the model to…

Computer Vision and Pattern Recognition · Computer Science 2022-03-15 Ye Du , Zehua Fu , Qingjie Liu , Yunhong Wang

In this work, we focus on the task of weakly supervised affordance grounding, where a model is trained to identify affordance regions on objects using human-object interaction images and egocentric object images without dense labels.…

Computer Vision and Pattern Recognition · Computer Science 2025-06-02 Peiran Xu , Yadong Mu

Currently, existing efforts in Weakly Supervised Semantic Segmentation (WSSS) based on Convolutional Neural Networks (CNNs) have predominantly focused on enhancing the multi-label classification network stage, with limited attention given…

Computer Vision and Pattern Recognition · Computer Science 2023-10-25 Jia Zhang , Bo Peng , Xi Wu

Weakly supervised semantic segmentation (WSSS) based on image-level labels is challenging since it is hard to obtain complete semantic regions. To address this issue, we propose a self-training method that utilizes fused multi-scale…

Computer Vision and Pattern Recognition · Computer Science 2023-05-11 Guoqing Yang , Chuang Zhu , Yu Zhang

This work aims to leverage pre-trained foundation models, such as contrastive language-image pre-training (CLIP) and segment anything model (SAM), to address weakly supervised semantic segmentation (WSSS) using image-level labels. To this…

Computer Vision and Pattern Recognition · Computer Science 2023-12-12 Xiaobo Yang , Xiaojin Gong

Recently proposed methods for weakly-supervised semantic segmentation have achieved impressive performance in predicting pixel classes despite being trained with only image labels which lack positional information. Because image annotations…

Computer Vision and Pattern Recognition · Computer Science 2020-10-20 Lyndon Chan , Mahdi S. Hosseini , Konstantinos N. Plataniotis

We propose a weakly-supervised framework for the semantic segmentation of circular-scan synthetic-aperture-sonar (CSAS) imagery. The first part of our framework is trained in a supervised manner, on image-level labels, to uncover a set of…

Image-level weakly-supervised semantic segmentation (WSSS) reduces the usually vast data annotation cost by surrogate segmentation masks during training. The typical approach involves training an image classification network using global…

Computer Vision and Pattern Recognition · Computer Science 2024-06-10 Arvi Jonnarth , Yushan Zhang , Michael Felsberg

Video Paragraph Grounding (VPG) is an emerging task in video-language understanding, which aims at localizing multiple sentences with semantic relations and temporal order from an untrimmed video. However, existing VPG approaches are…

Computer Vision and Pattern Recognition · Computer Science 2024-05-15 Chaolei Tan , Jianhuang Lai , Wei-Shi Zheng , Jian-Fang Hu

As a computer vision task, automatic object segmentation remains challenging in specialized image domains without massive labeled data, such as synthetic aperture sonar images, remote sensing, biomedical imaging, etc. In any domain,…

Computer Vision and Pattern Recognition · Computer Science 2025-11-05 Hassan Baker , Matthew S. Emigh , Austin J. Brockmeier

Cell shape analysis is important in biomedical research. Deep learning methods may perform to segment individual cells if they use sufficient training data that the boundary of each cell is annotated. However, it is very time-consuming for…

Image and Video Processing · Electrical Eng. & Systems 2020-02-26 Kazuya Nishimura , Dai Fei Elmer Ker , Ryoma Bise

Pixel-level annotations are expensive and time consuming to obtain. Hence, weak supervision using only image tags could have a significant impact in semantic segmentation. Recently, CNN-based methods have proposed to fine-tune pre-trained…

Computer Vision and Pattern Recognition · Computer Science 2016-09-05 Fatemehsadat Saleh , Mohammad Sadegh Ali Akbarian , Mathieu Salzmann , Lars Petersson , Stephen Gould , Jose M. Alvarez

Weakly supervised semantic segmentation (WSSS) must learn dense masks from noisy, under-specified cues. We revisit the SegFormer decoder and show that three small, synergistic changes make weak supervision markedly more effective-without…

Computer Vision and Pattern Recognition · Computer Science 2025-11-26 Ali Torabi , Sanjog Gaihre , Yaqoob Majeed