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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

This paper describes an optimized single-stage deep convolutional neural network to detect objects in urban environments, using nothing more than point cloud data. This feature enables our method to work regardless the time of the day and…

Computer Vision and Pattern Recognition · Computer Science 2018-05-21 Kazuki Minemura , Hengfui Liau , Abraham Monrroy , Shinpei Kato

In the past few years we have seen great advances in object perception (particularly in 4D space-time dimensions) thanks to deep learning methods. However, they typically rely on large amounts of high-quality labels to achieve good…

Computer Vision and Pattern Recognition · Computer Science 2021-03-15 Bin Yang , Min Bai , Ming Liang , Wenyuan Zeng , Raquel Urtasun

Recognizing 3D part instances from a 3D point cloud is crucial for 3D structure and scene understanding. Several learning-based approaches use semantic segmentation and instance center prediction as training tasks and fail to further…

Computer Vision and Pattern Recognition · Computer Science 2022-08-10 Chunyu Sun , Xin Tong , Yang Liu

Existing Earth Vision datasets are either suitable for semantic segmentation or object detection. In this work, we introduce the first benchmark dataset for instance segmentation in aerial imagery that combines instance-level object…

Computer Vision and Pattern Recognition · Computer Science 2019-08-29 Syed Waqas Zamir , Aditya Arora , Akshita Gupta , Salman Khan , Guolei Sun , Fahad Shahbaz Khan , Fan Zhu , Ling Shao , Gui-Song Xia , Xiang Bai

While 2D object detection has improved significantly over the past, real world applications of computer vision often require an understanding of the 3D layout of a scene. Many recent approaches to 3D detection use LiDAR point clouds for…

Computer Vision and Pattern Recognition · Computer Science 2020-11-20 Jihao Andreas Lin , Jakob Brünker , Daniel Fährmann

Existing state-of-the-art 3D point cloud understanding methods merely perform well in a fully supervised manner. To the best of our knowledge, there exists no unified framework that simultaneously solves the downstream high-level…

Computer Vision and Pattern Recognition · Computer Science 2023-12-05 Kangcheng Liu

Panoptic segmentation as an integrated task of both static environmental understanding and dynamic object identification, has recently begun to receive broad research interest. In this paper, we propose a new computationally efficient LiDAR…

Computer Vision and Pattern Recognition · Computer Science 2021-08-20 Ryan Razani , Ran Cheng , Enxu Li , Ehsan Taghavi , Yuan Ren , Liu Bingbing

LiDAR-based 3D single object tracking (3D SOT) is a critical issue in robotics and autonomous driving. Existing 3D SOT methods typically adhere to a point-based processing pipeline, wherein the re-sampling operation invariably leads to…

Computer Vision and Pattern Recognition · Computer Science 2025-05-20 Weisheng Xu , Sifan Zhou , Jiaqi Xiong , Ziyu Zhao , Zhihang Yuan

Most end-to-end Multi-Object Tracking (MOT) methods face the problems of low accuracy and poor generalization ability. Although traditional filter-based methods can achieve better results, they are difficult to be endowed with optimal…

Computer Vision and Pattern Recognition · Computer Science 2021-03-08 Guangyao Zhai , Xin Kong , Jinhao Cui , Yong Liu , Zhen Yang

Semantic segmentation of 3D point cloud data is essential for enhanced high-level perception in autonomous platforms. Furthermore, given the increasing deployment of LiDAR sensors onboard of cars and drones, a special emphasis is also…

Computer Vision and Pattern Recognition · Computer Science 2020-11-09 Yara Ali Alnaggar , Mohamed Afifi , Karim Amer , Mohamed Elhelw

SSF3D modified the semi-supervised 3D object detection (SS3DOD) framework, which designed specifically for point cloud data. Leveraging the characteristics of non-coincidence and weak correlation of target objects in point cloud, we adopt a…

Computer Vision and Pattern Recognition · Computer Science 2024-03-27 Songbur Wong

3D single object tracking plays an essential role in many applications, such as autonomous driving. It remains a challenging problem due to the large appearance variation and the sparsity of points caused by occlusion and limited sensor…

Computer Vision and Pattern Recognition · Computer Science 2023-03-20 Tian-Xing Xu , Yuan-Chen Guo , Yu-Kun Lai , Song-Hai Zhang

Tracking segmentation masks of multiple instances has been intensively studied, but still faces two fundamental challenges: 1) the requirement of large-scale, frame-wise annotation, and 2) the complexity of two-stage approaches. To resolve…

Computer Vision and Pattern Recognition · Computer Science 2021-04-02 Yang Fu , Sifei Liu , Umar Iqbal , Shalini De Mello , Humphrey Shi , Jan Kautz

Object detection and instance recognition play a central role in many AI applications like autonomous driving, video surveillance and medical image analysis. However, training object detection models on large scale datasets remains…

Computer Vision and Pattern Recognition · Computer Science 2019-03-15 Yuntao Chen , Chenxia Han , Yanghao Li , Zehao Huang , Yi Jiang , Naiyan Wang , Zhaoxiang Zhang

Multi-instance point cloud registration aims to estimate the pose of all instances of a model point cloud in the whole scene. Existing methods all adopt the strategy of first obtaining the global correspondence and then clustering to obtain…

Computer Vision and Pattern Recognition · Computer Science 2025-01-07 Liyuan Zhang , Le Hui , Qi Liu , Bo Li , Yuchao Dai

3D single object tracking with LiDAR points is an important task in the computer vision field. Previous methods usually adopt the matching-based or motion-centric paradigms to estimate the current target status. However, the former is…

Computer Vision and Pattern Recognition · Computer Science 2023-12-19 Zhiheng Li , Yu Lin , Yubo Cui , Shuo Li , Zheng Fang

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

Previous top-performing approaches for point cloud instance segmentation involve a bottom-up strategy, which often includes inefficient operations or complex pipelines, such as grouping over-segmented components, introducing additional…

Computer Vision and Pattern Recognition · Computer Science 2021-03-09 Tong He , Chunhua Shen , Anton van den Hengel

In this case study, we present a data-efficient point cloud segmentation pipeline and training framework for robust segmentation of unimproved roads and seven other classes. Our method employs a two-stage training framework: first, a…

Image and Video Processing · Electrical Eng. & Systems 2025-08-29 Andrew Yarovoi , Christopher R. Valenta