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Recent advancements in 3D Gaussian Splatting(3DGS) have significantly improved semantic scene understanding, enabling natural language queries to localize objects within a scene. However, existing methods primarily focus on embedding…

Computer Vision and Pattern Recognition · Computer Science 2025-03-07 Xihan Wang , Dianyi Yang , Yu Gao , Yufeng Yue , Yi Yang , Mengyin Fu

Integrating open-vocabulary semantic information into dynamic 3D scene representations is essential for long-term embodied scene understanding. However, existing methods often suffer from fragile instance association due to incomplete…

Computer Vision and Pattern Recognition · Computer Science 2026-05-29 Luzhou Ge , Xiangyu Zhu , Jinyan Liu , Xuesong Li

In this paper, we consider the problem of open-vocabulary semantic segmentation (OVS), which aims to segment objects of arbitrary classes instead of pre-defined, closed-set categories. The main contributions are as follows: First, we…

Computer Vision and Pattern Recognition · Computer Science 2023-03-06 Jilan Xu , Junlin Hou , Yuejie Zhang , Rui Feng , Yi Wang , Yu Qiao , Weidi Xie

Recently, 3D Gaussian Splatting (3DGS) has achieved impressive performance on indoor surface reconstruction and 3D open-vocabulary segmentation. This paper presents GLS, a unified framework of 3D surface reconstruction and open-vocabulary…

Computer Vision and Pattern Recognition · Computer Science 2025-07-01 Jiaxiong Qiu , Liu Liu , Xinjie Wang , Tianwei Lin , Wei Sui , Zhizhong Su

Bridging natural language and 3D geometry is a crucial step toward flexible, language-driven scene understanding. While recent advances in 3D Gaussian Splatting (3DGS) have enabled fast and high-quality scene reconstruction, research has…

Computer Vision and Pattern Recognition · Computer Science 2025-04-18 Shaohui Dai , Yansong Qu , Zheyan Li , Xinyang Li , Shengchuan Zhang , Liujuan Cao

Injecting semantics into 3D Gaussian Splatting (3DGS) has recently garnered significant attention. While current approaches typically distill 3D semantic features from 2D foundational models (e.g., CLIP and SAM) to facilitate novel view…

Computer Vision and Pattern Recognition · Computer Science 2025-05-20 Wenbo Zhang , Lu Zhang , Ping Hu , Liqian Ma , Yunzhi Zhuge , Huchuan Lu

Open-Vocabulary Segmentation (OVS) has drawn increasing attention for its capacity to generalize segmentation beyond predefined categories. However, existing methods typically predict segmentation masks with simple forward inference,…

Computer Vision and Pattern Recognition · Computer Science 2025-08-04 Zongyan Han , Jiale Cao , Shuo Chen , Tong Wang , Jorma Laaksonen , Rao Muhammad Anwer

3D semantic occupancy prediction aims to obtain 3D fine-grained geometry and semantics of the surrounding scene and is an important task for the robustness of vision-centric autonomous driving. Most existing methods employ dense grids such…

Computer Vision and Pattern Recognition · Computer Science 2024-05-28 Yuanhui Huang , Wenzhao Zheng , Yunpeng Zhang , Jie Zhou , Jiwen Lu

Open-vocabulary 3D segmentation is a fundamental yet challenging task, requiring a mutual understanding of both segmentation and language. However, existing Gaussian-splatting-based methods rely either on a single 3D language field, leading…

Computer Vision and Pattern Recognition · Computer Science 2025-10-24 Runsong Zhu , Ka-Hei Hui , Zhengzhe Liu , Qianyi Wu , Weiliang Tang , Shi Qiu , Pheng-Ann Heng , Chi-Wing Fu

Recent advancements in pre-trained vision-language models, such as CLIP, have enabled the segmentation of arbitrary concepts solely from textual inputs, a process commonly referred to as open-vocabulary semantic segmentation (OVS). However,…

Computer Vision and Pattern Recognition · Computer Science 2023-07-18 Kunyang Han , Yong Liu , Jun Hao Liew , Henghui Ding , Yunchao Wei , Jiajun Liu , Yitong Wang , Yansong Tang , Yujiu Yang , Jiashi Feng , Yao Zhao

Open-vocabulary querying in 3D space is crucial for enabling more intelligent perception in applications such as robotics, autonomous systems, and augmented reality. However, most existing methods rely on 2D pixel-level parsing, leading to…

Computer Vision and Pattern Recognition · Computer Science 2025-10-28 Yiren Lu , Yunlai Zhou , Yiran Qiao , Chaoda Song , Tuo Liang , Jing Ma , Huan Wang , Yu Yin

Egocentric scenes exhibit frequent occlusions, varied viewpoints, and dynamic interactions compared to typical scene understanding tasks. Occlusions and varied viewpoints can lead to multi-view semantic inconsistencies, while dynamic…

Computer Vision and Pattern Recognition · Computer Science 2025-03-17 Di Li , Jie Feng , Jiahao Chen , Weisheng Dong , Guanbin Li , Guangming Shi , Licheng Jiao

Semantic segmentation in videos has been a focal point of recent research. However, existing models encounter challenges when faced with unfamiliar categories. To address this, we introduce the Open Vocabulary Video Semantic Segmentation…

Multimedia · Computer Science 2024-12-13 Xinhao Li , Yun Liu , Guolei Sun , Min Wu , Le Zhang , Ce Zhu

Achieving unified 3D perception and reasoning across tasks such as segmentation, retrieval, and relation understanding remains challenging, as existing methods are either object-centric or rely on costly training for inter-object reasoning.…

Computer Vision and Pattern Recognition · Computer Science 2026-03-19 Yaxu Xie , Abdalla Arafa , Alireza Javanmardi , Christen Millerdurai , Jia Cheng Hu , Shaoxiang Wang , Alain Pagani , Didier Stricker

Semantic understanding of 3D scenes is essential for robots to operate effectively and safely in complex environments. Existing methods for semantic scene reconstruction and semantic-aware novel view synthesis often rely on dense multi-view…

Computer Vision and Pattern Recognition · Computer Science 2026-03-04 Sheng Ye , Zhen-Hui Dong , Ruoyu Fan , Tian Lv , Yong-Jin Liu

Accurate object segmentation is crucial for high-quality scene understanding in the 3D vision domain. However, 3D segmentation based on 3D Gaussian Splatting (3DGS) struggles with accurately delineating object boundaries, as Gaussian…

Computer Vision and Pattern Recognition · Computer Science 2025-03-27 Jiaxin Zhang , Junjun Jiang , Youyu Chen , Kui Jiang , Xianming Liu

Open-vocabulary 3D Scene Graph (3DSG) can enhance various downstream tasks in robotics by leveraging structured semantic representations, yet current 3DSG construction methods suffer from semantic inconsistencies caused by noisy cross-image…

Computer Vision and Pattern Recognition · Computer Science 2026-03-17 Yue Chang , Rufeng Chen , Zhaofan Zhang , Yi Chen , Yifan Tian , Sihong Xie

Open-vocabulary 3D occupancy is vital for embodied agents, which need to understand complex indoor environments where semantic categories are abundant and evolve beyond fixed taxonomies. While recent work has explored open-vocabulary…

Computer Vision and Pattern Recognition · Computer Science 2026-05-19 Changqing Zhou , Yueru Luo , Han Zhang , Zeyu Jiang , Changhao Chen

Open-vocabulary segmentation enables pixel-level recognition from an open set of textual categories, allowing generalization beyond fixed classes. Despite great potential in remote sensing, progress in this area remains largely limited to…

Computer Vision and Pattern Recognition · Computer Science 2026-03-30 Yimin Wei , Aoran Xiao , Hongruixuan Chen , Junshi Xia , Naoto Yokoya

3D Gaussian Splatting is renowned for its high-fidelity reconstructions and real-time novel view synthesis, yet its lack of semantic understanding limits object-level perception. In this work, we propose ObjectGS, an object-aware framework…

Graphics · Computer Science 2025-07-22 Ruijie Zhu , Mulin Yu , Linning Xu , Lihan Jiang , Yixuan Li , Tianzhu Zhang , Jiangmiao Pang , Bo Dai