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Instance segmentation is a computer vision task where separate objects in an image are detected and segmented. State-of-the-art deep neural network models require large amounts of labeled data in order to perform well in this task. Making…

Computer Vision and Pattern Recognition · Computer Science 2022-02-21 Tuomas Sormunen , Arttu Lämsä , Miguel Bordallo Lopez

Open-Vocabulary Segmentation (OVS) methods offer promising capabilities in detecting unseen object categories, but the category must be known and needs to be provided by a human, either via a text prompt or pre-labeled datasets, thus…

Computer Vision and Pattern Recognition · Computer Science 2025-04-01 Weijie Wei , Osman Ülger , Fatemeh Karimi Nejadasl , Theo Gevers , Martin R. Oswald

Unsupervised point cloud segmentation is critical for embodied artificial intelligence and autonomous driving, as it mitigates the prohibitive cost of dense point-level annotations required by fully supervised methods. While integrating 2D…

Computer Vision and Pattern Recognition · Computer Science 2026-05-13 Yixiao Song , Qingyong Li , Wen Wang , Zhicheng Yan

We propose a novel deep learning-based framework to tackle the challenge of semantic segmentation of large-scale point clouds of millions of points. We argue that the organization of 3D point clouds can be efficiently captured by a…

Computer Vision and Pattern Recognition · Computer Science 2018-03-29 Loic Landrieu , Martin Simonovsky

Outdoor LiDAR point cloud 3D instance segmentation is a crucial task in autonomous driving. However, it requires laborious human efforts to annotate the point cloud for training a segmentation model. To address this challenge, we propose a…

Computer Vision and Pattern Recognition · Computer Science 2025-03-18 Guangfeng Jiang , Jun Liu , Yongxuan Lv , Yuzhi Wu , Xianfei Li , Wenlong Liao , Tao He , Pai Peng

Accurate point cloud segmentation for plant organs is crucial for 3D plant phenotyping. Existing solutions are designed problem-specific with a focus on certain plant species or specified sensor-modalities for data acquisition. Furthermore,…

Computer Vision and Pattern Recognition · Computer Science 2025-09-26 Andreas Gilson , Lukas Meyer , Oliver Scholz , Ute Schmid

Currently, deep learning-based instance segmentation for various applications (e.g., Agriculture) is predominantly performed using a labor-intensive process involving extensive field data collection using sophisticated sensors, followed by…

Computer Vision and Pattern Recognition · Computer Science 2025-03-03 Ranjan Sapkota , Achyut Paudel , Manoj Karkee

Most recent 3D instance segmentation methods are open vocabulary, offering a greater flexibility than closed-vocabulary methods. Yet, they are limited to reasoning within a specific set of concepts, \ie the vocabulary, prompted by the user…

Computer Vision and Pattern Recognition · Computer Science 2025-03-31 Guofeng Mei , Luigi Riz , Yiming Wang , Fabio Poiesi

Although semi-dense Simultaneous Localization and Mapping (SLAM) has been becoming more popular over the last few years, there is a lack of efficient methods for representing and processing their large scale point clouds. In this paper, we…

Computer Vision and Pattern Recognition · Computer Science 2018-04-30 Shida He , Xuebin Qin , Zichen Zhang , Martin Jagersand

LIDAR semantic segmentation, which assigns a semantic label to each 3D point measured by the LIDAR, is becoming an essential task for many robotic applications such as autonomous driving. Fast and efficient semantic segmentation methods are…

Computer Vision and Pattern Recognition · Computer Science 2021-04-28 Iñigo Alonso , Luis Riazuelo , Luis Montesano , Ana C. Murillo

Panoptic segmentation of LiDAR point clouds is fundamental to outdoor scene understanding, with autonomous driving being a primary application. While state-of-the-art approaches typically rely on end-to-end deep learning architectures and…

Computer Vision and Pattern Recognition · Computer Science 2025-11-18 Corentin Sautier , Gilles Puy , Alexandre Boulch , Renaud Marlet , Vincent Lepetit

Automated semantic segmentation and object detection are of great importance in geospatial data analysis. However, supervised machine learning systems such as convolutional neural networks require large corpora of annotated training data.…

Computer Vision and Pattern Recognition · Computer Science 2021-07-20 Michael Kölle , Dominik Laupheimer , Stefan Schmohl , Norbert Haala , Franz Rottensteiner , Jan Dirk Wegner , Hugo Ledoux

We present a self-supervised learning approach for the semantic segmentation of lidar frames. Our method is used to train a deep point cloud segmentation architecture without any human annotation. The annotation process is automated with…

Robotics · Computer Science 2020-12-11 Hugues Thomas , Ben Agro , Mona Gridseth , Jian Zhang , Timothy D. Barfoot

The precise characterization of plant morphology provides valuable insights into plant environment interactions and genetic evolution. A key technology for extracting this information is 3D segmentation, which delineates individual plant…

Computer Vision and Pattern Recognition · Computer Science 2025-09-09 Ruiming Du , Guangxun Zhai , Tian Qiu , Yu Jiang

We study the hard problem of 3D object segmentation in complex point clouds without requiring human labels of 3D scenes for supervision. By relying on the similarity of pretrained 2D features or external signals such as motion to group 3D…

Computer Vision and Pattern Recognition · Computer Science 2025-04-17 Zihui Zhang , Yafei Yang , Hongtao Wen , Bo Yang

Most state-of-the-art instance segmentation methods have to be trained on densely annotated images. While difficult in general, this requirement is especially daunting for biomedical images, where domain expertise is often required for…

Computer Vision and Pattern Recognition · Computer Science 2022-04-05 Adrian Wolny , Qin Yu , Constantin Pape , Anna Kreshuk

Independently exploring unknown spaces or finding objects in an indoor environment is a daily but challenging task for visually impaired people. However, common 2D assistive systems lack depth relationships between various objects,…

Computer Vision and Pattern Recognition · Computer Science 2021-07-08 Huayao Liu , Ruiping Liu , Kailun Yang , Jiaming Zhang , Kunyu Peng , Rainer Stiefelhagen

Many existing approaches for 3D point cloud semantic segmentation are fully supervised. These fully supervised approaches heavily rely on large amounts of labeled training data that are difficult to obtain and cannot segment new classes…

Computer Vision and Pattern Recognition · Computer Science 2021-03-30 Na Zhao , Tat-Seng Chua , Gim Hee Lee

Point cloud segmentation and classification are some of the primary tasks in 3D computer vision with applications ranging from augmented reality to robotics. However, processing point clouds using deep learning-based algorithms is quite…

Computer Vision and Pattern Recognition · Computer Science 2022-11-22 Aadesh Desai , Saagar Parikh , Seema Kumari , Shanmuganathan Raman

Training neural networks for tasks such as 3D point cloud semantic segmentation demands extensive datasets, yet obtaining and annotating real-world point clouds is costly and labor-intensive. This work aims to introduce a novel pipeline for…

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