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We introduce Ilov3Splat, a novel framework for instance-level open-vocabulary 3D scene understanding built on 3D Gaussian Splatting (3D-GS). Most prior work depends on 2D rendering-based matching or point-level semantic association, which…

Computer Vision and Pattern Recognition · Computer Science 2026-05-14 Binh Long Nguyen , Kien Nguyen , Sridha Sridharan , Clinton Fookes , Peyman Moghadam

This paper presents a novel 3D semantic segmentation method for large-scale point cloud data that does not require annotated 3D training data or paired RGB images. The proposed approach projects 3D point clouds onto 2D images using virtual…

Computer Vision and Pattern Recognition · Computer Science 2026-01-06 Toshihiko Nishimura , Hirofumi Abe , Kazuhiko Murasaki , Taiga Yoshida , Ryuichi Tanida

Instance segmentation is an important problem in computer vision, with applications in autonomous driving, drone navigation and robotic manipulation. However, most existing methods are not real-time, complicating their deployment in…

Computer Vision and Pattern Recognition · Computer Science 2019-07-31 Laurynas Miksys , Saumya Jetley , Michael Sapienza , Stuart Golodetz , Philip H. S. Torr

Tooth point cloud segmentation is a fundamental task in many orthodontic applications. Current research mainly focuses on fully supervised learning which demands expensive and tedious manual point-wise annotation. Although recent…

Computer Vision and Pattern Recognition · Computer Science 2024-09-04 Yifan Liu , Wuyang Li , Cheng Wang , Hui Chen , Yixuan Yuan

Semantic segmentation of 3D LiDAR point clouds, essential for autonomous driving and infrastructure management, is best achieved by supervised learning, which demands extensive annotated datasets and faces the problem of domain shifts. We…

Computer Vision and Pattern Recognition · Computer Science 2025-05-07 Andrew Caunes , Thierry Chateau , Vincent Frémont

Instance segmentation is a fundamental research in computer vision, especially in autonomous driving. However, manual mask annotation for instance segmentation is quite time-consuming and costly. To address this problem, some prior works…

Computer Vision and Pattern Recognition · Computer Science 2023-12-19 Guangfeng Jiang , Jun Liu , Yuzhi Wu , Wenlong Liao , Tao He , Pai Peng

Pixel-level segmentation is essential in remote sensing, where foundational vision models like CLIP and Segment Anything Model(SAM) have demonstrated significant capabilities in zero-shot segmentation tasks. Despite their advances,…

Multimedia · Computer Science 2025-03-12 Xing Zi , Kairui Jin , Xian Tao , Jun Li , Ali Braytee , Rajiv Ratn Shah , Mukesh Prasad

Open-vocabulary video instance segmentation strives to segment and track instances belonging to an open set of categories in a videos. The vision-language model Contrastive Language-Image Pre-training (CLIP) has shown robust zero-shot…

Computer Vision and Pattern Recognition · Computer Science 2024-10-10 Wenqi Zhu , Jiale Cao , Jin Xie , Shuangming Yang , Yanwei Pang

We tackle the problem of learning an implicit scene representation for 3D instance segmentation from a sequence of posed RGB images. Towards this, we introduce 3DIML, a novel framework that efficiently learns a neural label field which can…

Computer Vision and Pattern Recognition · Computer Science 2024-11-26 George Tang , Krishna Murthy Jatavallabhula , Antonio Torralba

We propose a new approach for 3D instance segmentation based on sparse convolution and point affinity prediction, which indicates the likelihood of two points belonging to the same instance. The proposed network, built upon submanifold…

Computer Vision and Pattern Recognition · Computer Science 2019-02-13 Chen Liu , Yasutaka Furukawa

Whilst the availability of 3D LiDAR point cloud data has significantly grown in recent years, annotation remains expensive and time-consuming, leading to a demand for semi-supervised semantic segmentation methods with application domains…

Computer Vision and Pattern Recognition · Computer Science 2023-03-29 Li Li , Hubert P. H. Shum , Toby P. Breckon

Medical image segmentation remains challenging due to limited annotations for training, ambiguous anatomical features, and domain shifts. While vision-language models such as CLIP offer strong cross-modal representations, their potential…

Computer Vision and Pattern Recognition · Computer Science 2026-02-25 Taha Koleilat , Hojat Asgariandehkordi , Omid Nejati Manzari , Berardino Barile , Yiming Xiao , Hassan Rivaz

Co-part segmentation is an important problem in computer vision for its rich applications. We propose an unsupervised learning approach for co-part segmentation from images. For the training stage, we leverage motion information embedded in…

Computer Vision and Pattern Recognition · Computer Science 2021-06-11 Qingzhe Gao , Bin Wang , Libin Liu , Baoquan Chen

Semantic segmentation of 3D point cloud scenes is a crucial task for various applications. In real-world scenarios, training segmentation models often faces three concurrent forms of data insufficiency: scarcity of training scenes, scarcity…

Computer Vision and Pattern Recognition · Computer Science 2026-04-14 Takahiko Furuya

3D scene understanding is crucial for facilitating seamless interaction between digital devices and the physical world. Real-time capturing and processing of the 3D scene are essential for achieving this seamless integration. While existing…

Computer Vision and Pattern Recognition · Computer Science 2024-10-04 Remco Royen , Kostas Pataridis , Ward van der Tempel , Adrian Munteanu

Open-set 3D segmentation represents a major point of interest for multiple downstream robotics and augmented/virtual reality applications. We present a decoupled 3D segmentation pipeline to ensure modularity and adaptability to novel 3D…

Computer Vision and Pattern Recognition · Computer Science 2025-04-10 Luis Wiedmann , Luca Wiehe , David Rozenberszki

Accurate 3D object detection in LiDAR point clouds is crucial for autonomous driving systems. To achieve state-of-the-art performance, the supervised training of detectors requires large amounts of human-annotated data, which is expensive…

Computer Vision and Pattern Recognition · Computer Science 2024-08-08 Christian Fruhwirth-Reisinger , Wei Lin , Dušan Malić , Horst Bischof , Horst Possegger

This paper introduces VolMap, a real-time approach for the semantic segmentation of a 3D LiDAR surrounding view system in autonomous vehicles. We designed an optimized deep convolution neural network that can accurately segment the point…

Computer Vision and Pattern Recognition · Computer Science 2019-07-01 Hager Radi , Waleed Ali

Monocular 3D scene understanding tasks, such as object size estimation, heading angle estimation and 3D localization, is challenging. Successful modern day methods for 3D scene understanding require the use of a 3D sensor. On the other…

Computer Vision and Pattern Recognition · Computer Science 2019-09-04 Xinshuo Weng , Kris Kitani

In the field of 3D perception using 3D LiDAR sensors, ground segmentation is an essential task for various purposes, such as traversable area detection and object recognition. Under these circumstances, several ground segmentation methods…

Robotics · Computer Science 2022-09-28 Seungjae Lee , Hyungtae Lim , Hyun Myung