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Single-point annotation is increasingly prominent in visual tasks for labeling cost reduction. However, it challenges tasks requiring high precision, such as the point-prompted instance segmentation (PPIS) task, which aims to estimate…

Computer Vision and Pattern Recognition · Computer Science 2026-02-26 Zhaoyang Wei , Xumeng Han , Xuehui Yu , Xue Yang , Guorong Li , Zhenjun Han , Jianbin Jiao

Current instance segmentation methods can be categorized into segmentation-based methods that segment first then do clustering, and proposal-based methods that detect first then predict masks for each instance proposal using repooling. In…

Computer Vision and Pattern Recognition · Computer Science 2019-12-06 Hui Ying , Zhaojin Huang , Shu Liu , Tianjia Shao , Kun Zhou

We introduce a highly efficient method for panoptic segmentation of large 3D point clouds by redefining this task as a scalable graph clustering problem. This approach can be trained using only local auxiliary tasks, thereby eliminating the…

Computer Vision and Pattern Recognition · Computer Science 2024-02-08 Damien Robert , Hugo Raguet , Loic Landrieu

4D panoptic LiDAR segmentation is essential for scene understanding in autonomous driving and robotics, combining semantic and instance segmentation with temporal consistency. Current methods, like 4D-PLS and 4D-STOP, use a…

Computer Vision and Pattern Recognition · Computer Science 2025-03-26 Nirit Alkalay , Roy Orfaig , Ben-Zion Bobrovsky

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

Accurate perception and scene understanding in complex urban environments is a critical challenge for ensuring safe and efficient autonomous navigation. In this paper, we present Co-Win, a novel bird's eye view (BEV) perception framework…

Computer Vision and Pattern Recognition · Computer Science 2025-07-29 Haichuan Li , Tomi Westerlund

Panoptic reconstruction is a challenging task in 3D scene understanding. However, most existing methods heavily rely on pre-trained semantic segmentation models and known 3D object bounding boxes for 3D panoptic segmentation, which is not…

Computer Vision and Pattern Recognition · Computer Science 2024-07-02 Xuan Yu , Yili Liu , Chenrui Han , Sitong Mao , Shunbo Zhou , Rong Xiong , Yiyi Liao , Yue Wang

In this work, we propose a novel node splitting method for regression trees and incorporate it into the regression forest framework. Unlike traditional binary splitting, where the splitting rule is selected from a predefined set of binary…

Computer Vision and Pattern Recognition · Computer Science 2014-07-16 Kota Hara , Rama Chellappa

In the past few years, we have seen great progress in perception algorithms, particular through the use of deep learning. However, most existing approaches focus on a few categories of interest, which represent only a small fraction of the…

Computer Vision and Pattern Recognition · Computer Science 2019-10-25 Kelvin Wong , Shenlong Wang , Mengye Ren , Ming Liang , Raquel Urtasun

Point cloud datasets for perception tasks in the context of autonomous driving often rely on high resolution 64-layer Light Detection and Ranging (LIDAR) scanners. They are expensive to deploy on real-world autonomous driving sensor…

Computer Vision and Pattern Recognition · Computer Science 2020-05-28 Leonardo Gigli , B Ravi Kiran , Thomas Paul , Andres Serna , Nagarjuna Vemuri , Beatriz Marcotegui , Santiago Velasco-Forero

We present a new, embarrassingly simple approach to instance segmentation in images. Compared to many other dense prediction tasks, e.g., semantic segmentation, it is the arbitrary number of instances that have made instance segmentation…

Computer Vision and Pattern Recognition · Computer Science 2020-07-21 Xinlong Wang , Tao Kong , Chunhua Shen , Yuning Jiang , Lei Li

Video instance segmentation (VIS) aims at segmenting and tracking objects in videos. Prior methods typically generate frame-level or clip-level object instances first and then associate them by either additional tracking heads or complex…

Computer Vision and Pattern Recognition · Computer Science 2023-01-06 Fei He , Haoyang Zhang , Naiyu Gao , Jian Jia , Yanhu Shan , Xin Zhao , Kaiqi Huang

Instance segmentation and panoptic segmentation is being paid more and more attention in recent years. In comparison with bounding box based object detection and semantic segmentation, instance segmentation can provide more analytical…

Computer Vision and Pattern Recognition · Computer Science 2020-08-04 Xiaolong Liu , Yuqing Hou , Anbang Yao , Yurong Chen , Keqiang Li

Detecting and segmenting novel object instances in open-world environments is a fundamental problem in robotic perception. Given only a small set of template images, a robot must locate and segment a specific object instance in a cluttered,…

Computer Vision and Pattern Recognition · Computer Science 2026-05-15 Qifan Zhang , Sai Haneesh Allu , Jikai Wang , Yangxiao Lu , Yu Xiang

Panoptic segmentation is a complex full scene parsing task requiring simultaneous instance and semantic segmentation at high resolution. Current state-of-the-art approaches cannot run in real-time, and simplifying these architectures to…

Computer Vision and Pattern Recognition · Computer Science 2020-04-07 Rui Hou , Jie Li , Arjun Bhargava , Allan Raventos , Vitor Guizilini , Chao Fang , Jerome Lynch , Adrien Gaidon

In this paper, we focus on semi-supervised object detection to boost performance of proposal-based object detectors (a.k.a. two-stage object detectors) by training on both labeled and unlabeled data. However, it is non-trivial to train…

Computer Vision and Pattern Recognition · Computer Science 2020-04-27 Peng Tang , Chetan Ramaiah , Yan Wang , Ran Xu , Caiming Xiong

While Contrastive Language-Image Pre-training (CLIP) has advanced open-vocabulary predictions, its performance on semantic segmentation remains suboptimal. This shortfall primarily stems from its spatial-invariant semantic features and…

Computer Vision and Pattern Recognition · Computer Science 2024-11-15 Yuheng Shi , Minjing Dong , Chang Xu

We propose a methodology for robust, real-time place recognition using an imaging lidar, which yields image-quality high-resolution 3D point clouds. Utilizing the intensity readings of an imaging lidar, we project the point cloud and obtain…

Computer Vision and Pattern Recognition · Computer Science 2021-04-23 Tixiao Shan , Brendan Englot , Fabio Duarte , Carlo Ratti , Daniela Rus

We propose LU-Net -- for LiDAR U-Net, a new method for the semantic segmentation of a 3D LiDAR point cloud. Instead of applying some global 3D segmentation method such as PointNet, we propose an end-to-end architecture for LiDAR point cloud…

Computer Vision and Pattern Recognition · Computer Science 2019-09-02 Pierre Biasutti , Vincent Lepetit , Jean-François Aujol , Mathieu Brédif , Aurélie Bugeau

Instance segmentation is essential for numerous computer vision applications, including robotics, human-computer interaction, and autonomous driving. Currently, popular models bring impressive performance in instance segmentation by…

Computer Vision and Pattern Recognition · Computer Science 2025-09-09 Cuong Manh Hoang