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Open-vocabulary segmentation of 3D scenes is a fundamental function of human perception and thus a crucial objective in computer vision research. However, this task is heavily impeded by the lack of large-scale and diverse 3D…

Computer Vision and Pattern Recognition · Computer Science 2024-01-10 Kunhao Liu , Fangneng Zhan , Jiahui Zhang , Muyu Xu , Yingchen Yu , Abdulmotaleb El Saddik , Christian Theobalt , Eric Xing , Shijian Lu

Coarse-to-fine 3D instance segmentation methods show weak performances compared to recent Grouping-based, Kernel-based and Transformer-based methods. We argue that this is due to two limitations: 1) Instance size overestimation by…

Computer Vision and Pattern Recognition · Computer Science 2024-07-08 Sangyun Shin , Kaichen Zhou , Madhu Vankadari , Andrew Markham , Niki Trigoni

Accurate interpretation of street-level imagery is essential for large-scale urban mapping and the creation of Spatial Digital Twin (SDT) environments. This work presents a unified framework for joint 2D-3D segmentation and association that…

Computer Vision and Pattern Recognition · Computer Science 2026-05-27 Amir Melnikov , Masayuki Tanaka , Yusuke Monno , Masatoshi Okutomi

Understanding and reasoning about complex 3D environments requires structured scene representations that capture not only objects but also their semantic and spatial relationships. While recent works on 3D scene graph generation have…

Computer Vision and Pattern Recognition · Computer Science 2025-10-27 Pranav Saxena , Jimmy Chiun

This paper presents an approach for applying camera perception techniques to spinning LiDAR data. To improve the robustness of long-term change detection from a 3D LiDAR, range and intensity information are rendered into virtual…

Robotics · Computer Science 2024-05-01 Alexander Krawciw , Sven Lilge , Timothy D. Barfoot

Anti-spoofing detection has become a necessity for face recognition systems due to the security threat posed by spoofing attacks. Despite great success in traditional attacks, most deep-learning-based methods perform poorly in 3D masks,…

Computer Vision and Pattern Recognition · Computer Science 2023-10-26 Yuxin Cao , Yian Li , Yumeng Zhu , Derui Wang , Minhui Xue

Microscopy imaging techniques are instrumental for characterization and analysis of biological structures. As these techniques typically render 3D visualization of cells by stacking 2D projections, issues such as out-of-plane excitation and…

Image and Video Processing · Electrical Eng. & Systems 2023-02-16 Amirkoushyar Ziabari , Derek C. Rose , Abbas Shirinifard , David Solecki

Real-time holistic scene understanding would allow machines to interpret their surrounding in a much more detailed manner than is currently possible. While panoptic image segmentation methods have brought image segmentation closer to this…

Computer Vision and Pattern Recognition · Computer Science 2022-04-04 Leevi Raivio , Esa Rahtu

The deficiency of 3D segmentation labels is one of the main obstacles to effective point cloud segmentation, especially for scenes in the wild with varieties of different objects. To alleviate this issue, we propose a novel deep graph…

Computer Vision and Pattern Recognition · Computer Science 2020-05-19 Haiyan Wang , Xuejian Rong , Liang Yang , Jinglun Feng , Jizhong Xiao , Yingli Tian

In this technical study, we introduce VFusedSeg3D, an innovative multi-modal fusion system created by the VisionRD team that combines camera and LiDAR data to significantly enhance the accuracy of 3D perception. VFusedSeg3D uses the rich…

Computer Vision and Pattern Recognition · Computer Science 2024-08-29 Osama Amjad , Ammad Nadeem

We propose UniSeg3D, a unified 3D scene understanding framework that achieves panoptic, semantic, instance, interactive, referring, and open-vocabulary segmentation tasks within a single model. Most previous 3D segmentation approaches are…

Computer Vision and Pattern Recognition · Computer Science 2024-11-28 Wei Xu , Chunsheng Shi , Sifan Tu , Xin Zhou , Dingkang Liang , Xiang Bai

This paper presents a novel approach for segmenting moving objects in unconstrained environments using guided convolutional neural networks. This guiding process relies on foreground masks from independent algorithms (i.e. state-of-the-art…

Computer Vision and Pattern Recognition · Computer Science 2019-04-26 Diego Ortego , Kevin McGuinness , Juan C. SanMiguel , Eric Arazo , José M. Martínez , Noel E. O'Connor

LiDAR-camera fusion can enhance the performance of 3D object detection by utilizing complementary information between depth-aware LiDAR points and semantically rich images. Existing voxel-based methods face significant challenges when…

Computer Vision and Pattern Recognition · Computer Science 2025-03-05 Ziying Song , Guoxin Zhang , Jun Xie , Lin Liu , Caiyan Jia , Shaoqing Xu , Zhepeng Wang

Unsupervised domain adaptation (UDA) is vital for alleviating the workload of labeling 3D point cloud data and mitigating the absence of labels when facing a newly defined domain. Various methods of utilizing images to enhance the…

Computer Vision and Pattern Recognition · Computer Science 2024-03-18 Jingyi Xu , Weidong Yang , Lingdong Kong , Youquan Liu , Rui Zhang , Qingyuan Zhou , Ben Fei

Uniform downsampling remains the de facto standard for reducing spatial resolution in vision backbones. In this work, we propose an alternative design built around a content-aware spatial grouping layer, that dynamically assigns tokens to a…

Computer Vision and Pattern Recognition · Computer Science 2025-05-23 Guillem Brasó , Aljoša Ošep , Laura Leal-Taixé

Recognizing the sounding objects in scenes is a longstanding objective in embodied AI, with diverse applications in robotics and AR/VR/MR. To that end, Audio-Visual Segmentation (AVS), taking as condition an audio signal to identify the…

Computer Vision and Pattern Recognition · Computer Science 2025-10-22 Artem Sokolov , Swapnil Bhosale , Xiatian Zhu

Most existing instance segmentation methods only focus on improving performance and are not suitable for real-time scenes such as autonomous driving. This paper proposes a real-time framework that segmenting and detecting 3D objects by…

Computer Vision and Pattern Recognition · Computer Science 2020-10-27 Shengjie Li , Caiyi Xu , Jianping Xing , Yafei Ning , Yonghong Chen

A fast and accurate panoptic segmentation system for LiDAR point clouds is crucial for autonomous driving vehicles to understand the surrounding objects and scenes. Existing approaches usually rely on proposals or clustering to segment…

Computer Vision and Pattern Recognition · Computer Science 2023-02-06 Enxu Li , Ryan Razani , Yixuan Xu , Bingbing Liu

Unlike closed-vocabulary 3D instance segmentation that is often trained end-to-end, open-vocabulary 3D instance segmentation (OV-3DIS) often leverages vision-language models (VLMs) to generate 3D instance proposals and classify them. While…

Computer Vision and Pattern Recognition · Computer Science 2025-08-01 Sanghun Jung , Jingjing Zheng , Ke Zhang , Nan Qiao , Albert Y. C. Chen , Lu Xia , Chi Liu , Yuyin Sun , Xiao Zeng , Hsiang-Wei Huang , Byron Boots , Min Sun , Cheng-Hao Kuo

In recent years, video instance segmentation (VIS) has been largely advanced by offline models, while online models gradually attracted less attention possibly due to their inferior performance. However, online methods have their inherent…

Computer Vision and Pattern Recognition · Computer Science 2022-07-22 Junfeng Wu , Qihao Liu , Yi Jiang , Song Bai , Alan Yuille , Xiang Bai