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We target at the task of weakly-supervised video object grounding (WSVOG), where only video-sentence annotations are available during model learning. It aims to localize objects described in the sentence to visual regions in the video,…

Computer Vision and Pattern Recognition · Computer Science 2021-12-02 Wei Wang , Junyu Gao , Changsheng Xu

Cross-view geo-localization (CVGL) between drone and satellite imagery remains challenging due to severe viewpoint gaps and the presence of hard negatives, which are visually similar but geographically mismatched samples. Existing mining or…

Computer Vision and Pattern Recognition · Computer Science 2025-11-05 Guozheng Zheng , Jian Guan , Mingjie Xie , Xuanjia Zhao , Congyi Fan , Shiheng Zhang , Pengming Feng

Cross-view localization (CVL) matches ground-level images with aerial references to determine the geo-position of a camera, enabling smart vehicles to self-localize offline in GNSS-denied environments. However, most CVL methods output only…

Computer Vision and Pattern Recognition · Computer Science 2025-08-08 Yongjun Zhang , Mingtao Xiong , Yi Wan , Gui-Song Xia

The 3D weakly-supervised visual grounding task aims to localize oriented 3D boxes in point clouds based on natural language descriptions without requiring annotations to guide model learning. This setting presents two primary challenges:…

Computer Vision and Pattern Recognition · Computer Science 2025-05-06 Xiaoqi Li , Jiaming Liu , Nuowei Han , Liang Heng , Yandong Guo , Hao Dong , Yang Liu

Given an object of interest, visual navigation aims to reach the object's location based on a sequence of partial observations. To this end, an agent needs to 1) learn a piece of certain knowledge about the relations of object categories in…

Computer Vision and Pattern Recognition · Computer Science 2023-12-07 Xiaobo Hu , Youfang Lin , HeHe Fan , Shuo Wang , Zhihao Wu , Kai Lv

Video copy localization aims to precisely localize all the copied segments within a pair of untrimmed videos in video retrieval applications. Previous methods typically start from frame-to-frame similarity matrix generated by cosine…

Computer Vision and Pattern Recognition · Computer Science 2022-11-28 Sifeng He , Yue He , Minlong Lu , Chen Jiang , Xudong Yang , Feng Qian , Xiaobo Zhang , Lei Yang , Jiandong Zhang

This paper introduces a novel approach to enhancing cross-view localization, focusing on the fine-grained, sequential localization of street-view images within a single known satellite image patch, a significant departure from traditional…

Computer Vision and Pattern Recognition · Computer Science 2024-08-29 Dong Yuan , Frederic Maire , Feras Dayoub

Weakly Supervised Object Localization (WSOL), which aims to localize objects by only using image-level labels, has attracted much attention because of its low annotation cost in real applications. Recent studies leverage the advantage of…

Computer Vision and Pattern Recognition · Computer Science 2023-03-13 Haotian Bai , Ruimao Zhang , Jiong Wang , Xiang Wan

Although recent advances in deep learning accelerated an improvement in a weakly supervised object localization (WSOL) task, there are still challenges to identify the entire body of an object, rather than only discriminative parts. In this…

Computer Vision and Pattern Recognition · Computer Science 2021-04-13 Junghyo Sohn , Eunjin Jeon , Wonsik Jung , Eunsong Kang , Heung-Il Suk

Camouflaged object detection (COD) aims to identify the objects that conceal themselves in natural scenes. Accurate COD suffers from a number of challenges associated with low boundary contrast and the large variation of object appearances,…

Computer Vision and Pattern Recognition · Computer Science 2022-07-28 Geng Chen , Si-Jie Liu , Yu-Jia Sun , Ge-Peng Ji , Ya-Feng Wu , Tao Zhou

Image retrieval has been employed as a robust complementary technique to address the challenge of Unmanned Aerial Vehicles (UAVs) self-positioning. However, most existing methods primarily focus on localizing objects captured by UAVs…

Computer Vision and Pattern Recognition · Computer Science 2025-02-18 Yuanze Xu , Ming Dai , Wenxiao Cai , Wankou Yang

3D visual grounding aims to identify the target object within a 3D point cloud scene referred to by a natural language description. Previous works usually require significant data relating to point color and their descriptions to exploit…

Computer Vision and Pattern Recognition · Computer Science 2025-02-25 Tung-Yu Wu , Sheng-Yu Huang , Yu-Chiang Frank Wang

Zero-shot recognition aims to classify an image by selecting the most compatible label description from a set of candidate classes without any task-specific supervision. In fine-grained settings, however, the relevant evidence often lies in…

Computer Vision and Pattern Recognition · Computer Science 2026-05-12 Junyi Hu , Qiji Zhou , Lei Zhang , Yue Zhang

3D visual grounding aims to identify objects in 3D point cloud scenes that match specific natural language descriptions. This requires the model to not only focus on the target object itself but also to consider the surrounding environment…

Computer Vision and Pattern Recognition · Computer Science 2024-09-04 Chenshu Hou , Liang Peng , Xiaopei Wu , Xiaofei He , Wenxiao Wang

The problem of localization on a geo-referenced satellite map given a query ground view image is useful yet remains challenging due to the drastic change in viewpoint. To this end, in this paper we work on the extension of our earlier work…

Computer Vision and Pattern Recognition · Computer Science 2019-06-04 Sixing Hu , Gim Hee Lee

Drone-view Geo-Localization (DVGL) aims to achieve accurate localization of drones by retrieving the most relevant GPS-tagged satellite images. However, most existing methods heavily rely on strictly pre-paired drone-satellite images for…

Computer Vision and Pattern Recognition · Computer Science 2025-11-27 Zhongwei Chen , Zhao-Xu Yang , Hai-Jun Rong , Guoqi Li

Recent advances in cross-view geo-localization (CVGL) methods have shown strong potential for supporting unmanned aerial vehicle (UAV) navigation in GNSS-denied environments. However, existing work predominantly focuses on matching UAV…

Computer Vision and Pattern Recognition · Computer Science 2026-04-14 Kejia Liu , Haoyang Zhou , Ruoyu Xu , Peicheng Wang , Mingli Song , Haofei Zhang

Remarkable progress has been made in self-supervised monocular depth estimation (SS-MDE) by exploring cross-view consistency, e.g., photometric consistency and 3D point cloud consistency. However, they are very vulnerable to illumination…

Computer Vision and Pattern Recognition · Computer Science 2024-03-19 Haimei Zhao , Jing Zhang , Zhuo Chen , Bo Yuan , Dacheng Tao

Recent advances in image understanding have enabled methods that leverage large language models for multimodal reasoning in remote sensing. However, existing approaches still struggle to steer models to the user-relevant regions when only…

Computer Vision and Pattern Recognition · Computer Science 2025-12-15 Xu Zhang , Jiabin Fang , Zhuoming Ding , Jin Yuan , Xuan Liu , Qianjun Zhang , Zhiyong Li

This paper proposes a fine-grained self-localization method for outdoor robotics that utilizes a flexible number of onboard cameras and readily accessible satellite images. The proposed method addresses limitations in existing cross-view…

Computer Vision and Pattern Recognition · Computer Science 2023-08-17 Shan Wang , Yanhao Zhang , Akhil Perincherry , Ankit Vora , Hongdong Li