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Supervised contour detection methods usually require many labeled training images to obtain satisfactory performance. However, a large set of annotated data might be unavailable or extremely labor intensive. In this paper, we investigate…

Computer Vision and Pattern Recognition · Computer Science 2016-05-18 Zizhao Zhang , Fuyong Xing , Xiaoshuang Shi , Lin Yang

We present a weakly supervised deep learning method to perform instance segmentation of cells present in microscopy images. Annotation of biomedical images in the lab can be scarce, incomplete, and inaccurate. This is of concern when…

Computer Vision and Pattern Recognition · Computer Science 2019-08-28 Fidel A. Guerrero-Peña , Pedro D. Marrero Fernandez , Tsang Ing Ren , Alexandre Cunha

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

We present two techniques to improve landmark localization in images from partially annotated datasets. Our primary goal is to leverage the common situation where precise landmark locations are only provided for a small data subset, but…

Computer Vision and Pattern Recognition · Computer Science 2018-10-30 Sina Honari , Pavlo Molchanov , Stephen Tyree , Pascal Vincent , Christopher Pal , Jan Kautz

Weakly-supervised Temporal Action Localization (WS-TAL) methods learn to localize temporal starts and ends of action instances in a video under only video-level supervision. Existing WS-TAL methods rely on deep features learned for action…

Computer Vision and Pattern Recognition · Computer Science 2021-03-31 Ziyi Liu , Le Wang , Wei Tang , Junsong Yuan , Nanning Zheng , Gang Hua

Visual localization has traditionally been formulated as a pair-wise pose regression problem. Existing approaches mainly estimate relative poses between two images and employ a late-fusion strategy to obtain absolute pose estimates.…

Computer Vision and Pattern Recognition · Computer Science 2025-12-29 Tianchen Deng , Wenhua Wu , Kunzhen Wu , Guangming Wang , Siting Zhu , Shenghai Yuan , Xun Chen , Guole Shen , Zhe Liu , Hesheng Wang

In this paper, we present SPVLoc, a global indoor localization method that accurately determines the six-dimensional (6D) camera pose of a query image and requires minimal scene-specific prior knowledge and no scene-specific training. Our…

Computer Vision and Pattern Recognition · Computer Science 2025-03-18 Niklas Gard , Anna Hilsmann , Peter Eisert

Visual (re)localization addresses the problem of estimating the 6-DoF (Degree of Freedom) camera pose of a query image captured in a known scene, which is a key building block of many computer vision and robotics applications. Recent…

Computer Vision and Pattern Recognition · Computer Science 2022-08-16 Siyan Dong , Shuzhe Wang , Yixin Zhuang , Juho Kannala , Marc Pollefeys , Baoquan Chen

Visual place recognition techniques based on deep learning, which have imposed themselves as the state-of-the-art in recent years, do not generalize well to environments visually different from the training set. Thus, to achieve top…

Computer Vision and Pattern Recognition · Computer Science 2023-03-15 Pierre-Yves Lajoie , Giovanni Beltrame

Although various visual localization approaches exist, such as scene coordinate regression and camera pose regression, these methods often struggle with optimization complexity or limited accuracy. To address these challenges, we explore…

Computer Vision and Pattern Recognition · Computer Science 2025-03-21 Gennady Sidorov , Malik Mohrat , Denis Gridusov , Ruslan Rakhimov , Sergey Kolyubin

Weakly-supervised semantic segmentation (WSSS) performs pixel-wise classification given only image-level labels for training. Despite the difficulty of this task, the research community has achieved promising results over the last five…

Computer Vision and Pattern Recognition · Computer Science 2023-09-26 Cheolhyun Mun , Sanghuk Lee , Youngjung Uh , Junsuk Choe , Hyeran Byun

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

Camera relocalization, a cornerstone capability of modern computer vision, accurately determines a camera's position and orientation (6-DoF) from images and is essential for applications in augmented reality (AR), mixed reality (MR),…

Computer Vision and Pattern Recognition · Computer Science 2025-07-08 Zhendong Xiao , Wu Wei , Shujie Ji , Shan Yang , Changhao Chen

Self-supervised vision transformers (SSTs) have shown great potential to yield rich localization maps that highlight different objects in an image. However, these maps remain class-agnostic since the model is unsupervised. They often tend…

Computer Vision and Pattern Recognition · Computer Science 2023-10-20 Shakeeb Murtaza , Soufiane Belharbi , Marco Pedersoli , Aydin Sarraf , Eric Granger

Weakly supervised visual recognition using inexact supervision is a critical yet challenging learning problem. It significantly reduces human labeling costs and traditionally relies on multi-instance learning and pseudo-labeling. This paper…

Computer Vision and Pattern Recognition · Computer Science 2024-08-20 Lianghui Zhu , Junwei Zhou , Yan Liu , Xin Hao , Wenyu Liu , Xinggang Wang

Machine unlearning, the efficient deletion of the impact of specific data in a trained model, remains a challenging problem. Current machine unlearning approaches that focus primarily on data-centric or weight-based strategies frequently…

Machine Learning · Computer Science 2025-08-07 Thang Duc Tran , Thai Hoang Le

Generating precise class-aware pseudo ground-truths, a.k.a, class activation maps (CAMs), is essential for weakly-supervised semantic segmentation. The original CAM method usually produces incomplete and inaccurate localization maps. To…

Computer Vision and Pattern Recognition · Computer Science 2022-09-21 Jinlong Li , Zequn Jie , Xu Wang , Xiaolin Wei , Lin Ma

Object counting is a fundamental task in computer vision, with broad applicability in many real-world scenarios. Fully-supervised counting methods require costly point-level annotations per object. Few weakly-supervised methods leverage…

Computer Vision and Pattern Recognition · Computer Science 2026-02-16 Xiaowen Zhang , Zijie Yue , Yong Luo , Cairong Zhao , Qijun Chen , Miaojing Shi

We consider the problem of relative pose regression in visual relocalization. Recently, several promising approaches have emerged in this area. We claim that even though they demonstrate on the same datasets using the same split to train…

Computer Vision and Pattern Recognition · Computer Science 2020-09-25 Amir Shalev , Omer Achrack , Brian Fulkerson , Ben-Zion Bobrovsky

This work addresses the task of completely weakly supervised class-incremental learning for semantic segmentation to learn segmentation for both base and additional novel classes using only image-level labels. While class-incremental…

Computer Vision and Pattern Recognition · Computer Science 2025-05-19 David Minkwan Kim , Soeun Lee , Byeongkeun Kang
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