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Instance segmentation in 3D is a challenging task due to the lack of large-scale annotated datasets. In this paper, we show that this task can be addressed effectively by leveraging instead 2D pre-trained models for instance segmentation.…

Computer Vision and Pattern Recognition · Computer Science 2023-12-05 Yash Bhalgat , Iro Laina , João F. Henriques , Andrew Zisserman , Andrea Vedaldi

This paper investigates the indistinguishable points (difficult to predict label) in semantic segmentation for large-scale 3D point clouds. The indistinguishable points consist of those located in complex boundary, points with similar local…

Computer Vision and Pattern Recognition · Computer Science 2021-08-27 Mingye Xu , Zhipeng Zhou , Junhao Zhang , Yu Qiao

While deep learning-based methods have demonstrated outstanding results in numerous domains, some important functionalities are missing. Resolution scalability is one of them. In this work, we introduce a novel architecture, dubbed…

Computer Vision and Pattern Recognition · Computer Science 2024-04-11 Remco Royen , Adrian Munteanu

3D point cloud semantic and instance segmentation is crucial and fundamental for 3D scene understanding. Due to the complex structure, point sets are distributed off balance and diversely, which appears as both category imbalance and…

Computer Vision and Pattern Recognition · Computer Science 2020-01-07 Tong He , Dong Gong , Zhi Tian , Chunhua Shen

This paper presents a novel method for instance segmentation of 3D point clouds. The proposed method is called Gaussian Instance Center Network (GICN), which can approximate the distributions of instance centers scattered in the whole scene…

Computer Vision and Pattern Recognition · Computer Science 2020-07-21 Shih-Hung Liu , Shang-Yi Yu , Shao-Chi Wu , Hwann-Tzong Chen , Tyng-Luh Liu

3D instance segmentation is an important task for real-world applications. To avoid costly manual annotations, existing methods have explored generating pseudo labels by transferring 2D masks from foundation models to 3D. However, this…

Computer Vision and Pattern Recognition · Computer Science 2025-11-04 Juan Wang , Yasutomo Kawanishi , Tomo Miyazaki , Zhijie Wang , Shinichiro Omachi

The paper presents a simple and effective learning-based method for computing a discriminative 3D point cloud descriptor for place recognition purposes. Recent state-of-the-art methods have relatively complex architectures such as…

Computer Vision and Pattern Recognition · Computer Science 2022-04-11 Jacek Komorowski

Instance segmentation in point clouds is one of the most fine-grained ways to understand the 3D scene. Due to its close relationship to semantic segmentation, many works approach these two tasks simultaneously and leverage the benefits of…

Computer Vision and Pattern Recognition · Computer Science 2020-03-12 Guangnan Wu , Zhiyi Pan , Peng Jiang , Changhe Tu

We introduce a novel framework for Continual Learning in 3D object classification. Our approach, CL3D, is based on the selection of prototypes from each class using spectral clustering. For non-Euclidean data such as point clouds, spectral…

Computer Vision and Pattern Recognition · Computer Science 2025-03-07 Hossein Resani , Behrooz Nasihatkon , Mohammadreza Alimoradi Jazi

In this paper, we propose a training scheme called OVSeg3R to learn open-vocabulary 3D instance segmentation from well-studied 2D perception models with the aid of 3D reconstruction. OVSeg3R directly adopts reconstructed scenes from 2D…

Computer Vision and Pattern Recognition · Computer Science 2026-01-06 Hongyang Li , Jinyuan Qu , Lei Zhang

Existing state-of-the-art 3D instance segmentation methods perform semantic segmentation followed by grouping. The hard predictions are made when performing semantic segmentation such that each point is associated with a single class.…

Computer Vision and Pattern Recognition · Computer Science 2022-03-04 Thang Vu , Kookhoi Kim , Tung M. Luu , Xuan Thanh Nguyen , Chang D. Yoo

3D point cloud semantic segmentation is a challenging topic in the computer vision field. Most of the existing methods in literature require a large amount of fully labeled training data, but it is extremely time-consuming to obtain these…

Computer Vision and Pattern Recognition · Computer Science 2022-04-07 Shuang Deng , Qiulei Dong , Bo Liu , Zhanyi Hu

Segmenting 3D assets into their constituent parts is crucial for enhancing 3D understanding, facilitating model reuse, and supporting various applications such as part generation. However, current methods face limitations such as poor…

Computer Vision and Pattern Recognition · Computer Science 2025-09-26 Changfeng Ma , Yang Li , Xinhao Yan , Jiachen Xu , Yunhan Yang , Chunshi Wang , Zibo Zhao , Yanwen Guo , Zhuo Chen , Chunchao Guo

This paper proposes a novel block merging algorithm suitable for any block-based 3D instance segmentation technique. The proposed work improves over the state-of-the-art by allowing wrongly labelled points of already processed blocks to be…

Computer Vision and Pattern Recognition · Computer Science 2024-07-11 Leon Denis , Remco Royen , Adrian Munteanu

Over the last decade, the demand for better segmentation and classification algorithms in 3D spaces has significantly grown due to the popularity of new 3D sensor technologies and advancements in the field of robotics. Point-clouds are one…

Computer Vision and Pattern Recognition · Computer Science 2019-10-02 Felipe Gomez Marulanda , Pieter Libin , Timothy Verstraeten , Ann Nowé

Monocular 3D detection has drawn much attention from the community due to its low cost and setup simplicity. It takes an RGB image as input and predicts 3D boxes in the 3D space. The most challenging sub-task lies in the instance depth…

Computer Vision and Pattern Recognition · Computer Science 2022-07-25 Liang Peng , Xiaopei Wu , Zheng Yang , Haifeng Liu , Deng Cai

Point cloud panoptic segmentation is a challenging task that seeks a holistic solution for both semantic and instance segmentation to predict groupings of coherent points. Previous approaches treat semantic and instance segmentation as…

Computer Vision and Pattern Recognition · Computer Science 2023-03-01 Shihao Su , Jianyun Xu , Huanyu Wang , Zhenwei Miao , Xin Zhan , Dayang Hao , Xi Li

Recently most popular tracking frameworks focus on 2D image sequences. They seldom track the 3D object in point clouds. In this paper, we propose PointIT, a fast, simple tracking method based on 3D on-road instance segmentation. Firstly, we…

Computer Vision and Pattern Recognition · Computer Science 2019-02-19 Yuan Wang , Yang Yu , Ming Liu

Point cloud segmentation and classification are some of the primary tasks in 3D computer vision with applications ranging from augmented reality to robotics. However, processing point clouds using deep learning-based algorithms is quite…

Computer Vision and Pattern Recognition · Computer Science 2022-11-22 Aadesh Desai , Saagar Parikh , Seema Kumari , Shanmuganathan Raman

Part-level point cloud segmentation has recently attracted significant attention in 3D computer vision. Nevertheless, existing research is constrained by two major challenges: native 3D models lack generalization due to data scarcity, while…

Computer Vision and Pattern Recognition · Computer Science 2026-04-28 Han Su , Tianyu Huang , Zichen Wan , Xiaohe Wu , Wangmeng Zuo
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