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The 3D point cloud representation plays a crucial role in preserving the geometric fidelity of the physical world, enabling more accurate complex 3D environments. While humans naturally comprehend the intricate relationships between objects…

Computer Vision and Pattern Recognition · Computer Science 2025-01-31 Vishal Thengane , Xiatian Zhu , Salim Bouzerdoum , Son Lam Phung , Yunpeng Li

3D Visual Grounding (3DVG) aims to localize the referent of natural language referring expressions through two core tasks: Referring Expression Comprehension (3DREC) and Segmentation (3DRES). While existing methods achieve high accuracy in…

Computer Vision and Pattern Recognition · Computer Science 2026-03-19 Wenbin Tan , Jiawen Lin , Fangyong Wang , Yuan Xie , Yong Xie , Yachao Zhang , Yanyun Qu

3D Visual Grounding (3DVG) aims at localizing 3D object based on textual descriptions. Conventional supervised methods for 3DVG often necessitate extensive annotations and a predefined vocabulary, which can be restrictive. To address this…

Computer Vision and Pattern Recognition · Computer Science 2024-03-26 Zhihao Yuan , Jinke Ren , Chun-Mei Feng , Hengshuang Zhao , Shuguang Cui , Zhen Li

Precise object placement remains underexplored in aerial manipulation, where most systems rely on predefined target coordinates and focus primarily on grasping and control. Specifying exact placement poses, however, is cumbersome in…

Robotics · Computer Science 2026-03-10 Sarthak Mishra , Rishabh Dev Yadav , Naveen Nair , Wei Pan , Spandan Roy

Multi-modal large language models have demonstrated impressive performance across various tasks in different modalities. However, existing multi-modal models primarily emphasize capturing global information within each modality while…

Computer Vision and Pattern Recognition · Computer Science 2024-03-06 Zhaowei Li , Qi Xu , Dong Zhang , Hang Song , Yiqing Cai , Qi Qi , Ran Zhou , Junting Pan , Zefeng Li , Van Tu Vu , Zhida Huang , Tao Wang

In this paper, we present a neat yet effective transformer-based framework for visual grounding, namely TransVG, to address the task of grounding a language query to the corresponding region onto an image. The state-of-the-art methods,…

Computer Vision and Pattern Recognition · Computer Science 2022-01-17 Jiajun Deng , Zhengyuan Yang , Tianlang Chen , Wengang Zhou , Houqiang Li

Root cause analysis in modern cloud infrastructure demands sophisticated understanding of heterogeneous data sources, particularly time-series performance metrics that involve core failure signatures. While large language models demonstrate…

Artificial Intelligence · Computer Science 2026-01-09 Gijun Park

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

Grounding object properties and relations in 3D scenes is a prerequisite for a wide range of artificial intelligence tasks, such as visually grounded dialogues and embodied manipulation. However, the variability of the 3D domain induces two…

Computer Vision and Pattern Recognition · Computer Science 2023-03-24 Joy Hsu , Jiayuan Mao , Jiajun Wu

3D Visual Grounding (3DVG) seeks to locate target objects in 3D scenes using natural language descriptions, enabling downstream applications such as augmented reality and robotics. Existing approaches typically rely on labeled 3D data and…

Computer Vision and Pattern Recognition · Computer Science 2025-05-29 Rong Li , Shijie Li , Lingdong Kong , Xulei Yang , Junwei Liang

In this paper, we address the challenging problem of 3D concept grounding (i.e. segmenting and learning visual concepts) by looking at RGBD images and reasoning about paired questions and answers. Existing visual reasoning approaches…

Computer Vision and Pattern Recognition · Computer Science 2022-07-14 Yining Hong , Yilun Du , Chunru Lin , Joshua B. Tenenbaum , Chuang Gan

3D affordance reasoning, the task of associating human instructions with the functional regions of 3D objects, is a critical capability for embodied agents. Current methods based on 3D Gaussian Splatting (3DGS) are fundamentally limited to…

Computer Vision and Pattern Recognition · Computer Science 2025-08-01 Di Li , Jie Feng , Jiahao Chen , Weisheng Dong , Guanbin Li , Yuhui Zheng , Mingtao Feng , Guangming Shi

Temporal sentence grounding (TSG) aims to locate a specific moment from an untrimmed video with a given natural language query. Recently, weakly supervised methods still have a large performance gap compared to fully supervised ones, while…

Computer Vision and Pattern Recognition · Computer Science 2023-08-09 Hanjun Li , Xiujun Shu , Sunan He , Ruizhi Qiao , Wei Wen , Taian Guo , Bei Gan , Xing Sun

A key solution to temporal sentence grounding (TSG) exists in how to learn effective alignment between vision and language features extracted from an untrimmed video and a sentence description. Existing methods mainly leverage vanilla soft…

Computer Vision and Pattern Recognition · Computer Science 2021-09-15 Daizong Liu , Xiaoye Qu , Pan Zhou

Localizing objects in 3D scenes according to the semantics of a given natural language is a fundamental yet important task in the field of multimedia understanding, which benefits various real-world applications such as robotics and…

Computer Vision and Pattern Recognition · Computer Science 2023-09-06 Wencan Huang , Daizong Liu , Wei Hu

We study the problem of self-supervised 3D scene flow estimation from real large-scale raw point cloud sequences, which is crucial to various tasks like trajectory prediction or instance segmentation. In the absence of ground truth scene…

Computer Vision and Pattern Recognition · Computer Science 2024-08-14 Patrik Vacek , David Hurych , Tomáš Svoboda , Karel Zimmermann

We propose TerraFlow, a novel approach to multimodal, multitemporal learning for Earth observation. TerraFlow builds on temporal training objectives that enable sequence-aware learning across space, time, and modality, while remaining…

Computer Vision and Pattern Recognition · Computer Science 2026-03-16 Nazar Puriy , Johannes Jakubik , Benedikt Blumenstiel , Konrad Schindler

Open-vocabulary 3D scene understanding is crucial for robotics applications, such as natural language-driven manipulation, human-robot interaction, and autonomous navigation. Existing methods for querying 3D Gaussian Splatting often…

Computer Vision and Pattern Recognition · Computer Science 2025-09-29 Hairong Yin , Huangying Zhan , Yi Xu , Raymond A. Yeh

Flow-matching models have recently emerged as a powerful framework for continuous generative modeling, including 3D point cloud synthesis. However, their deployment is limited by the need for multiple sequential sampling steps at inference…

Machine Learning · Computer Science 2026-03-20 Elaheh Akbari , Shansita Sharma , Ping He , Ahmadreza Moradipari , Kyungtae Han , Hamed Pirsiavash , Yikun Bai , Soheil Kolouri

Due to the scarcity of annotated scene flow data, self-supervised scene flow learning in point clouds has attracted increasing attention. In the self-supervised manner, establishing correspondences between two point clouds to approximate…

Computer Vision and Pattern Recognition · Computer Science 2021-05-19 Ruibo Li , Guosheng Lin , Lihua Xie