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We propose an interactive approach for 3D instance segmentation, where users can iteratively collaborate with a deep learning model to segment objects in a 3D point cloud directly. Current methods for 3D instance segmentation are generally…

Computer Vision and Pattern Recognition · Computer Science 2023-01-24 Theodora Kontogianni , Ekin Celikkan , Siyu Tang , Konrad Schindler

A 3D point cloud describes the real scene precisely and intuitively.To date how to segment diversified elements in such an informative 3D scene is rarely discussed. In this paper, we first introduce a simple and flexible framework to…

Computer Vision and Pattern Recognition · Computer Science 2019-03-01 Xinlong Wang , Shu Liu , Xiaoyong Shen , Chunhua Shen , Jiaya Jia

Most existing methods realize 3D instance segmentation by extending those models used for 3D object detection or 3D semantic segmentation. However, these non-straightforward methods suffer from two drawbacks: 1) Imprecise bounding boxes or…

Computer Vision and Pattern Recognition · Computer Science 2022-11-30 Jiahao Sun , Chunmei Qing , Junpeng Tan , Xiangmin Xu

In recent years, transformer-based models have exhibited considerable potential in point cloud instance segmentation. Despite the promising performance achieved by existing methods, they encounter challenges such as instance query…

Computer Vision and Pattern Recognition · Computer Science 2026-02-27 Lei Yao , Yi Wang , Moyun Liu , Lap-Pui Chau

Semantic, instance, and panoptic segmentation of 3D point clouds have been addressed using task-specific models of distinct design. Thereby, the similarity of all segmentation tasks and the implicit relationship between them have not been…

Computer Vision and Pattern Recognition · Computer Science 2023-11-27 Maxim Kolodiazhnyi , Anna Vorontsova , Anton Konushin , Danila Rukhovich

This paper introduces a new problem in 3D point cloud: few-shot instance segmentation. Given a few annotated point clouds exemplified a target class, our goal is to segment all instances of this target class in a query point cloud. This…

Computer Vision and Pattern Recognition · Computer Science 2022-08-09 Tuan Ngo , Khoi Nguyen

In interactive instance segmentation, users give feedback to iteratively refine segmentation masks. The user-provided clicks are transformed into guidance maps which provide the network with necessary cues on the whereabouts of the object…

Computer Vision and Pattern Recognition · Computer Science 2018-12-10 Soumajit Majumder , Angela Yao

Most existing 3D instance segmentation methods are derived from 3D semantic segmentation models. However, these indirect approaches suffer from certain limitations. They fail to fully leverage global and local semantic information for…

Computer Vision and Pattern Recognition · Computer Science 2023-07-18 Lei Pan , Wuyang Luan , Yuan Zheng , Qiang Fu , Junhui Li

3D instance segmentation plays a crucial role in comprehending 3D scenes. Despite recent advancements in this field, existing approaches exhibit certain limitations. These methods often rely on fixed instance positions obtained from sampled…

Computer Vision and Pattern Recognition · Computer Science 2023-12-12 Mengnan Zhao , Lihe Zhang , Yuqiu Kong , Baocai Yin

Most state-of-the-art instance segmentation methods rely on large amounts of pixel-precise ground-truth annotations for training, which are expensive to create. Interactive segmentation networks help generate such annotations based on an…

Computer Vision and Pattern Recognition · Computer Science 2023-08-23 Amit Kumar Rana , Sabarinath Mahadevan , Alexander Hermans , Bastian Leibe

Semantic segmentation and object detection research have recently achieved rapid progress. However, the former task has no notion of different instances of the same object, and the latter operates at a coarse, bounding-box level. We propose…

Computer Vision and Pattern Recognition · Computer Science 2017-04-11 Anurag Arnab , Philip H. S Torr

Existing interactive point cloud segmentation approaches primarily focus on the object segmentation, which aim to determine which points belong to the object of interest guided by user interactions. This paper concentrates on an unexplored…

Computer Vision and Pattern Recognition · Computer Science 2025-11-18 Peng Zhang , Ting Wu , Jinsheng Sun , Weiqing Li , Zhiyong Su

Interactive image segmentation enables users to interact minimally with a machine, facilitating the gradual refinement of the segmentation mask for a target of interest. Previous studies have demonstrated impressive performance in…

Computer Vision and Pattern Recognition · Computer Science 2024-06-18 Kun Li , Hao Cheng , George Vosselman , Michael Ying Yang

Transformer-based methods have become the dominant approach for 3D instance segmentation. These methods predict instance masks via instance queries, ranking them by classification confidence and IoU scores to select the top prediction as…

Computer Vision and Pattern Recognition · Computer Science 2025-01-06 Duanchu Wang , Jing Liu , Haoran Gong , Yinghui Quan , Di Wang

Interactive image segmentation enables annotators to efficiently perform pixel-level annotation for segmentation tasks. However, the existing interactive segmentation pipeline suffers from inefficient computations of interactive models…

Computer Vision and Pattern Recognition · Computer Science 2023-08-10 You Huang , Hao Yang , Ke Sun , Shengchuan Zhang , Liujuan Cao , Guannan Jiang , Rongrong Ji

Separating 3D point clouds into individual instances is an important task for 3D vision. It is challenging due to the unknown and varying number of instances in a scene. Existing deep learning based works focus on a two-step pipeline: first…

Computer Vision and Pattern Recognition · Computer Science 2021-08-27 Ruihang Chu , Yukang Chen , Tao Kong , Lu Qi , Lei Li

We propose an approach to instance segmentation from 3D point clouds based on dynamic convolution. This enables it to adapt, at inference, to varying feature and object scales. Doing so avoids some pitfalls of bottom up approaches,…

Computer Vision and Pattern Recognition · Computer Science 2022-10-17 Tong He , Chunhua Shen , Anton van den Hengel

Interactive segmentation allows efficient label generation by leveraging user-provided clicks to progressively refine predictions, which is critical when fully supervised labels are costly or generalization to unseen classes is needed.…

Computer Vision and Pattern Recognition · Computer Science 2026-05-19 Xueyang Kang , Zijian Yu , Kourosh Khoshelham , Liangliang Nan

Online, real-time, and fine-grained 3D segmentation constitutes a fundamental capability for embodied intelligent agents to perceive and comprehend their operational environments. Recent advancements employ predefined object queries to…

Computer Vision and Pattern Recognition · Computer Science 2025-12-09 Hanshi Wang , Zijian Cai , Jin Gao , Yiwei Zhang , Weiming Hu , Ke Wang , Zhipeng Zhang

Interactive segmentation has an important role in facilitating the annotation process of future LiDAR datasets. Existing approaches sequentially segment individual objects at each LiDAR scan, repeating the process throughout the entire…

Computer Vision and Pattern Recognition · Computer Science 2025-04-11 Ilya Fradlin , Idil Esen Zulfikar , Kadir Yilmaz , Theodora Kontogianni , Bastian Leibe
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