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Open-world 3D scene understanding is a critical challenge that involves recognizing and distinguishing diverse objects and categories from 3D data, such as point clouds, without relying on manual annotations. Traditional methods struggle…

计算机视觉与模式识别 · 计算机科学 2025-09-18 Yuru Wang , Pei Liu , Songtao Wang , Zehan Zhang , Xinyan Lu , Changwei Cai , Hao Li , Fu Liu , Peng Jia , Xianpeng Lang

Point cloud segmentation is a fundamental task in 3D scene understanding. Its progress is constrained by the high cost and time required for dense 3D annotations, making labeled samples difficult to obtain. Beyond annotation scarcity,…

计算机视觉与模式识别 · 计算机科学 2026-05-29 Thenukan Pathmanathan , Kanchan Keisham , Thangarajah Akilan

In-context learning (ICL) has proven highly effective across diverse large language model (LLM) tasks. However, its potential for enhancing tasks that demand step-by-step logical deduction, such as mathematical reasoning, remains…

人工智能 · 计算机科学 2026-01-21 Ang Gao , Changshuo Zhang , Xiao Zhang , Deyang Li , Minjun Zhao , Fangchao Liu , Xinyu Zhang

The core of self-supervised point cloud learning lies in setting up appropriate pretext tasks, to construct a pre-training framework that enables the encoder to perceive 3D objects effectively. In this paper, we integrate two prevalent…

计算机视觉与模式识别 · 计算机科学 2025-04-07 Yun Liu , Peng Li , Xuefeng Yan , Liangliang Nan , Bing Wang , Honghua Chen , Lina Gong , Wei Zhao , Mingqiang Wei

Point cloud based retrieval for place recognition is an emerging problem in vision field. The main challenge is how to find an efficient way to encode the local features into a discriminative global descriptor. In this paper, we propose a…

计算机视觉与模式识别 · 计算机科学 2019-04-23 Wenxiao Zhang , Chunxia Xiao

Weakly supervised point cloud semantic segmentation methods that require 1\% or fewer labels, hoping to realize almost the same performance as fully supervised approaches, which recently, have attracted extensive research attention. A…

计算机视觉与模式识别 · 计算机科学 2022-09-19 Tianfang Sun , Zhizhong Zhang , Xin Tan , Yanyun Qu , Yuan Xie , Lizhuang Ma

LiDAR point cloud semantic segmentation is essential for interpreting 3D environments in applications such as autonomous driving and robotics. Recent methods achieve strong performance by exploiting different point cloud representations or…

计算机视觉与模式识别 · 计算机科学 2025-09-16 Simone Mosco , Daniel Fusaro , Wanmeng Li , Emanuele Menegatti , Alberto Pretto

LiDAR-based place recognition is an essential and challenging task both in loop closure detection and global relocalization. We propose Deep Scan Context (DSC), a general and discriminative global descriptor that captures the relationship…

计算机视觉与模式识别 · 计算机科学 2021-11-30 Jiafeng Cui , Tengfei Huang , Yingfeng Cai , Junqiao Zhao , Lu Xiong , Zhuoping Yu

Point cloud semantic segmentation is a crucial task in 3D scene understanding. Existing methods mainly focus on employing a large number of annotated labels for supervised semantic segmentation. Nonetheless, manually labeling such large…

计算机视觉与模式识别 · 计算机科学 2021-05-25 Mingmei Cheng , Le Hui , Jin Xie , Jian Yang

Deep-learning models for 3D point cloud semantic segmentation exhibit limited generalization capabilities when trained and tested on data captured with different sensors or in varying environments due to domain shift. Domain adaptation…

计算机视觉与模式识别 · 计算机科学 2023-08-30 Cristiano Saltori , Fabio Galasso , Giuseppe Fiameni , Nicu Sebe , Fabio Poiesi , Elisa Ricci

Over the past few years, there has been remarkable progress in research on 3D point clouds and their use in autonomous driving scenarios has become widespread. However, deep learning methods heavily rely on annotated data and often face…

计算机视觉与模式识别 · 计算机科学 2024-03-06 Jin Fang , Dingfu Zhou , Jingjing Zhao , Chenming Wu , Chulin Tang , Cheng-Zhong Xu , Liangjun Zhang

Instance segmentation of point clouds is a crucial task in 3D field with numerous applications that involve localizing and segmenting objects in a scene. However, achieving satisfactory results requires a large number of manual annotations,…

计算机视觉与模式识别 · 计算机科学 2024-06-18 Zhikai Zhang , Jian Ding , Li Jiang , Dengxin Dai , Gui-Song Xia

The scale and quality of point cloud datasets constrain the advancement of point cloud learning. Recently, with the development of multi-modal learning, the incorporation of domain-agnostic prior knowledge from other modalities, such as…

计算机视觉与模式识别 · 计算机科学 2024-01-02 Yanmin Wu , Qiankun Gao , Renrui Zhang , Jian Zhang

Place recognition is a fundamental component of robotics, and has seen tremendous improvements through the use of deep learning models in recent years. Networks can experience significant drops in performance when deployed in unseen or…

计算机视觉与模式识别 · 计算机科学 2022-11-30 Joshua Knights , Peyman Moghadam , Milad Ramezani , Sridha Sridharan , Clinton Fookes

Classification and segmentation of 3D point clouds are important tasks in computer vision. Because of the irregular nature of point clouds, most of the existing methods convert point clouds into regular 3D voxel grids before they are used…

计算机视觉与模式识别 · 计算机科学 2018-12-05 Wei Zeng , Theo Gevers

Traditional 3D segmentation methods can only recognize a fixed range of classes that appear in the training set, which limits their application in real-world scenarios due to the lack of generalization ability. Large-scale visual-language…

计算机视觉与模式识别 · 计算机科学 2023-12-13 Yuanbin Wang , Shaofei Huang , Yulu Gao , Zhen Wang , Rui Wang , Kehua Sheng , Bo Zhang , Si Liu

Indoor scene modification has emerged as a prominent area within computer vision, particularly for its applications in Augmented Reality (AR) and Virtual Reality (VR). Traditional methods often rely on pre-existing object databases and…

计算机视觉与模式识别 · 计算机科学 2024-08-13 Yiyang Luo , Ke Lin , Chao Gu

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…

计算机视觉与模式识别 · 计算机科学 2023-01-24 Theodora Kontogianni , Ekin Celikkan , Siyu Tang , Konrad Schindler

Exploring contextual information in the local region is important for shape understanding and analysis. Existing studies often employ hand-crafted or explicit ways to encode contextual information of local regions. However, it is hard to…

计算机视觉与模式识别 · 计算机科学 2018-11-16 Xinhai Liu , Zhizhong Han , Yu-Shen Liu , Matthias Zwicker

In this paper, we explore the potential of visual in-context learning to enable a single model to handle multiple tasks and adapt to new tasks during test time without re-training. Unlike previous approaches, our focus is on training…

计算机视觉与模式识别 · 计算机科学 2025-07-03 Simon Reiß , Zdravko Marinov , Alexander Jaus , Constantin Seibold , M. Saquib Sarfraz , Erik Rodner , Rainer Stiefelhagen