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In this work, we address the challenging task of few-shot and zero-shot 3D point cloud semantic segmentation. The success of few-shot semantic segmentation in 2D computer vision is mainly driven by the pre-training on large-scale datasets…

Computer Vision and Pattern Recognition · Computer Science 2023-06-21 Shuting He , Xudong Jiang , Wei Jiang , Henghui Ding

Scene understanding with free-form language has been widely explored within diverse modalities such as images, point clouds, and LiDAR. However, related studies on event sensors are scarce or narrowly centered on semantic-level…

Computer Vision and Pattern Recognition · Computer Science 2026-02-02 Seungjun Lee , Gim Hee Lee

3D point cloud semantic segmentation has a wide range of applications. Recently, weakly supervised point cloud segmentation methods have been proposed, aiming to alleviate the expensive and laborious manual annotation process by leveraging…

Computer Vision and Pattern Recognition · Computer Science 2024-01-01 Xiawei Li , Qingyuan Xu , Jing Zhang , Tianyi Zhang , Qian Yu , Lu Sheng , Dong Xu

As research interests in medical image analysis become increasingly fine-grained, the cost for extensive annotation also rises. One feasible way to reduce the cost is to annotate with coarse-grained superclass labels while using limited…

Computer Vision and Pattern Recognition · Computer Science 2023-07-04 Linrui Dai , Wenhui Lei , Xiaofan Zhang

In recent years, with the development of computing resources and LiDAR, point cloud semantic segmentation has attracted many researchers. For the sparsity of point clouds, although there is already a way to deal with sparse convolution,…

Computer Vision and Pattern Recognition · Computer Science 2022-07-01 Yunzheng Su , Lei Jiang , Jie Cao

Semantic segmentation is a process of partitioning an image into multiple segments for recognizing humans and objects, which can be widely applied in scenarios such as healthcare and safety monitoring. To avoid privacy violation, using RF…

Signal Processing · Electrical Eng. & Systems 2021-10-07 Jingzhi Hu , Hongliang Zhang , Kaigui Bian , Zhu Han , H. Vincent Poor , Lingyang Song

To extract information at scale, researchers increasingly apply semantic segmentation techniques to remotely-sensed imagery. While fully-supervised learning enables accurate pixel-wise segmentation, compiling the exhaustive datasets…

Computer Vision and Pattern Recognition · Computer Science 2020-05-28 Simone Fobi , Terence Conlon , Jayant Taneja , Vijay Modi

Although extensive research has been conducted on 3D point cloud segmentation, effectively adapting generic models to novel categories remains a formidable challenge. This paper proposes a novel approach to improve point cloud few-shot…

Computer Vision and Pattern Recognition · Computer Science 2023-08-09 Zhenhua Ning , Zhuotao Tian , Guangming Lu , Wenjie Pei

Instance segmentation on 3D point clouds has been attracting increasing attention due to its wide applications, especially in scene understanding areas. However, most existing methods operate on fully annotated data while manually preparing…

Computer Vision and Pattern Recognition · Computer Science 2023-08-22 Shichao Dong , Ruibo Li , Jiacheng Wei , Fayao Liu , Guosheng Lin

Semantic segmentation is an important topic in computer vision with many relevant application in Earth observation. While supervised methods exist, the constraints of limited annotated data has encouraged development of unsupervised…

Computer Vision and Pattern Recognition · Computer Science 2024-08-15 Pratik Vora , Sudipan Saha

In this paper, we present CaveSeg - the first visual learning pipeline for semantic segmentation and scene parsing for AUV navigation inside underwater caves. We address the problem of scarce annotated training data by preparing a…

Robotics · Computer Science 2024-05-13 A. Abdullah , T. Barua , R. Tibbetts , Z. Chen , M. J. Islam , I. Rekleitis

Semi-supervised semantic segmentation (SSSS) aims to improve segmentation performance by utilizing large amounts of unlabeled data with limited labeled samples. Existing methods often suffer from coupling, where over-reliance on initial…

Computer Vision and Pattern Recognition · Computer Science 2025-04-10 Ebenezer Tarubinga , Jenifer Kalafatovich , Seong-Whan Lee

Text segmentation (TS) aims at dividing long text into coherent segments which reflect the subtopic structure of the text. It is beneficial to many natural language processing tasks, such as Information Retrieval (IR) and document…

Computation and Language · Computer Science 2015-11-30 Mostafa Bayomi , Killian Levacher , M. Rami Ghorab , Séamus Lawless

Training deep models for semantic scene completion (SSC) is challenging due to the sparse and incomplete input, a large quantity of objects of diverse scales as well as the inherent label noise for moving objects. To address the…

Computer Vision and Pattern Recognition · Computer Science 2023-03-14 Zhaoyang Xia , Youquan Liu , Xin Li , Xinge Zhu , Yuexin Ma , Yikang Li , Yuenan Hou , Yu Qiao

Semantic segmentation metrics for 3D point clouds, such as mean Intersection over Union (mIoU) and Overall Accuracy (OA), present two key limitations in the context of aerial LiDAR data. First, they treat all misclassifications equally…

Computer Vision and Pattern Recognition · Computer Science 2026-03-25 Alex Salvatierra , José Antonio Sanz , Christian Gutiérrez , Mikel Galar

Open-Vocabulary Semantic Segmentation (OVSS) has advanced with recent vision-language models (VLMs), enabling segmentation beyond predefined categories through various learning schemes. Notably, training-free methods offer scalable, easily…

Computer Vision and Pattern Recognition · Computer Science 2025-04-08 Chanyoung Kim , Dayun Ju , Woojung Han , Ming-Hsuan Yang , Seong Jae Hwang

In this paper, we propose PASS3D to achieve point-wise semantic segmentation for 3D point cloud. Our framework combines the efficiency of traditional geometric methods with robustness of deep learning methods, consisting of two stages: At…

Computer Vision and Pattern Recognition · Computer Science 2020-08-27 Xin Kong , Guangyao Zhai , Baoquan Zhong , Yong Liu

We tackle the novel class discovery in point cloud segmentation, which discovers novel classes based on the semantic knowledge of seen classes. Existing work proposes an online point-wise clustering method with a simplified equal class-size…

Computer Vision and Pattern Recognition · Computer Science 2024-07-18 Ruijie Xu , Chuyu Zhang , Hui Ren , Xuming He

We study the task of weakly-supervised point cloud semantic segmentation with sparse annotations (e.g., less than 0.1% points are labeled), aiming to reduce the expensive cost of dense annotations. Unfortunately, with extremely sparse…

Computer Vision and Pattern Recognition · Computer Science 2023-07-21 Lizhao Liu , Zhuangwei Zhuang , Shangxin Huang , Xunlong Xiao , Tianhang Xiang , Cen Chen , Jingdong Wang , Mingkui Tan

Semantic segmentation is a core computer vision problem, but the high costs of data annotation have hindered its wide application. Weakly-Supervised Semantic Segmentation (WSSS) offers a cost-efficient workaround to extensive labeling in…

Computer Vision and Pattern Recognition · Computer Science 2024-05-13 Elham Ravanbakhsh , Cheng Niu , Yongqing Liang , J. Ramanujam , Xin Li
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