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Today's open vocabulary scene graph generation (OVSGG) extends traditional SGG by recognizing novel objects and relationships beyond predefined categories, leveraging the knowledge from pre-trained large-scale models. Most existing methods…

Computer Vision and Pattern Recognition · Computer Science 2025-02-07 Lin Li , Chuhan Zhang , Dong Zhang , Chong Sun , Chen Li , Long Chen

Group Activity Scene Graph (GASG) generation is a challenging task in computer vision, aiming to anticipate and describe relationships between subjects and objects in video sequences. Traditional Video Scene Graph Generation (VidSGG)…

Computer Vision and Pattern Recognition · Computer Science 2024-10-23 Naga VS Raviteja Chappa , Pha Nguyen , Thi Hoang Ngan Le , Khoa Luu

In this paper, in order to pursue high-efficiency robotic arc welding tasks, we propose a method based on point cloud acquired by an RGB-D sensor. The method consists of two parts: welding groove detection and 3D welding trajectory…

Robotics · Computer Science 2020-04-28 Rui Peng , David Navarro-Alarcon , Victor Wu , Wen Yang

In recent years, the challenge of 3D shape analysis within point cloud data has gathered significant attention in computer vision. Addressing the complexities of effective 3D information representation and meaningful feature extraction for…

Computer Vision and Pattern Recognition · Computer Science 2024-12-05 Md Meraz , Md Afzal Ansari , Mohammed Javed , Pavan Chakraborty

Despite recent advances in retrieval-augmented generation (RAG) for video understanding, effectively understanding long-form video content remains underexplored due to the vast scale and high complexity of video data. Current RAG approaches…

Computer Vision and Pattern Recognition · Computer Science 2025-06-10 Nianbo Zeng , Haowen Hou , Fei Richard Yu , Si Shi , Ying Tiffany He

The temporal lag between actions and their long-term consequences makes credit assignment a challenge when learning goal-directed behaviors from data. Generative world models capture the distribution of future states an agent may visit,…

Machine Learning · Computer Science 2026-04-23 Aravind Venugopal , Jiayu Chen , Xudong Wu , Chongyi Zheng , Benjamin Eysenbach , Jeff Schneider

Training 3D object detectors for autonomous driving has been limited to small datasets due to the effort required to generate annotations. Reducing both task complexity and the amount of task switching done by annotators is key to reducing…

Machine Learning · Computer Science 2018-07-18 Jungwook Lee , Sean Walsh , Ali Harakeh , Steven L. Waslander

We propose a new task, dataset and model for grounded video caption generation. This task unifies captioning and object grounding in video, where the objects in the caption are grounded in the video via temporally consistent bounding boxes.…

Computer Vision and Pattern Recognition · Computer Science 2024-11-13 Evangelos Kazakos , Cordelia Schmid , Josef Sivic

Occupancy prediction tasks focus on the inference of both geometry and semantic labels for each voxel, which is an important perception mission. However, it is still a semantic segmentation task without distinguishing various instances.…

Computer Vision and Pattern Recognition · Computer Science 2023-07-13 Zichao Dong , Hang Ji , Weikun Zhang , Xufeng Huang , Junbo Chen

The primary goal of Visual Analytics (VA) is to enable user-guided knowledge generation. Theoretical VA works to explain how the different aspects of a VA tool bring forth new insights through user interactivity, which itself can be…

Human-Computer Interaction · Computer Science 2023-10-30 Leonardo Christino , Sima Rezaeipourfarsangi , Evangelos Milios , Fernando V. Paulovich

Recent trends in Video Instance Segmentation (VIS) have seen a growing reliance on online methods to model complex and lengthy video sequences. However, the degradation of representation and noise accumulation of the online methods,…

Computer Vision and Pattern Recognition · Computer Science 2023-05-29 Tanveer Hannan , Rajat Koner , Maximilian Bernhard , Suprosanna Shit , Bjoern Menze , Volker Tresp , Matthias Schubert , Thomas Seidl

We address key limitations in existing datasets and models for task-oriented hand-object interaction video generation, a critical approach of generating video demonstrations for robotic imitation learning. Current datasets, such as Ego4D,…

Computer Vision and Pattern Recognition · Computer Science 2025-06-09 Hongxiang Zhao , Xingchen Liu , Mutian Xu , Yiming Hao , Weikai Chen , Xiaoguang Han

Humans possess the cognitive ability to comprehend scenes in a compositional manner. To empower AI systems with similar capabilities, object-centric learning aims to acquire representations of individual objects from visual scenes without…

Computer Vision and Pattern Recognition · Computer Science 2023-09-07 Yinxuan Huang , Tonglin Chen , Zhimeng Shen , Jinghao Huang , Bin Li , Xiangyang Xue

Acquiring knowledge about object interactions and affordances can facilitate scene understanding and human-robot collaboration tasks. As humans tend to use objects in many different ways depending on the scene and the objects' availability,…

Artificial Intelligence · Computer Science 2023-04-13 Alexia Toumpa , Anthony G. Cohn

Audio-Visual Segmentation (AVS) aims to segment sound-producing objects in video frames based on the associated audio signal. Prevailing AVS methods typically adopt an audio-centric Transformer architecture, where object queries are derived…

Computer Vision and Pattern Recognition · Computer Science 2025-07-01 Shaofei Huang , Rui Ling , Tianrui Hui , Hongyu Li , Xu Zhou , Shifeng Zhang , Si Liu , Richang Hong , Meng Wang

Human Activity Recognition using wearable inertial sensors is foundational to healthcare monitoring, fitness analytics, and context-aware computing, yet its deployment is hindered by cross-user variability arising from heterogeneous…

Machine Learning · Computer Science 2026-03-18 Xiaozhou Ye , Feng Jiang , Zihan Wang , Xiulai Wang , Yutao Zhang , Kevin I-Kai Wang

In this paper, we study the problem of 3D object segmentation from raw point clouds. Unlike all existing methods which usually require a large amount of human annotations for full supervision, we propose the first unsupervised method,…

Computer Vision and Pattern Recognition · Computer Science 2022-10-11 Ziyang Song , Bo Yang

Character animation in real-world scenarios necessitates a variety of constraints, such as trajectories, key-frames, interactions, etc. Existing methodologies typically treat single or a finite set of these constraint(s) as separate control…

Computer Vision and Pattern Recognition · Computer Science 2024-05-30 Hanchao Liu , Xiaohang Zhan , Shaoli Huang , Tai-Jiang Mu , Ying Shan

Delving into the realm of egocentric vision, the advancement of referring video object segmentation (RVOS) stands as pivotal in understanding human activities. However, existing RVOS task primarily relies on static attributes such as object…

Computer Vision and Pattern Recognition · Computer Science 2024-07-11 Liangyang Ouyang , Ruicong Liu , Yifei Huang , Ryosuke Furuta , Yoichi Sato

3D point cloud segmentation aims to assign semantic labels to individual points in a scene for fine-grained spatial understanding. Existing methods typically adopt data augmentation to alleviate the burden of large-scale annotation.…

Computer Vision and Pattern Recognition · Computer Science 2025-07-31 Hongbin Lin , Yifan Jiang , Juangui Xu , Jesse Jiaxi Xu , Yi Lu , Zhengyu Hu , Ying-Cong Chen , Hao Wang