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Related papers: ALISE: Annotation-Free LiDAR Instance Segmentation…

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Manual annotation of soiling on surround view cameras is a very challenging and expensive task. The unclear boundary for various soiling categories like water drops or mud particles usually results in a large variance in the annotation…

Computer Vision and Pattern Recognition · Computer Science 2021-07-13 Michal Uricar , Ganesh Sistu , Lucie Yahiaoui , Senthil Yogamani

Label scarcity has been a long-standing issue for biomedical image segmentation, due to high annotation costs and professional requirements. Recently, active learning (AL) strategies strive to reduce annotation costs by querying a small…

Image and Video Processing · Electrical Eng. & Systems 2022-11-02 Ziyuan Zhao , Wenjing Lu , Zeng Zeng , Kaixin Xu , Bharadwaj Veeravalli , Cuntai Guan

Whilst the availability of 3D LiDAR point cloud data has significantly grown in recent years, annotation remains expensive and time-consuming, leading to a demand for semi-supervised semantic segmentation methods with application domains…

Computer Vision and Pattern Recognition · Computer Science 2023-03-29 Li Li , Hubert P. H. Shum , Toby P. Breckon

Competitive point cloud semantic segmentation results usually rely on a large amount of labeled data. However, data annotation is a time-consuming and labor-intensive task, particularly for three-dimensional point cloud data. Thus,…

Computer Vision and Pattern Recognition · Computer Science 2021-05-06 Puzuo Wang , Wei Yao

Tree instance segmentation of airborne laser scanning (ALS) data is of utmost importance for forest monitoring, but remains challenging due to variations in the data caused by factors such as sensor resolution, vegetation state at…

Computer Vision and Pattern Recognition · Computer Science 2025-08-22 Swann Emilien Céleste Destouches , Jesse Lahaye , Laurent Valentin Jospin , Jan Skaloud

3D instance segmentation methods often require fully-annotated dense labels for training, which are costly to obtain. In this paper, we present ClickSeg, a novel click-level weakly supervised 3D instance segmentation method that requires…

Computer Vision and Pattern Recognition · Computer Science 2023-07-20 Leyao Liu , Tao Kong , Minzhao Zhu , Jiashuo Fan , Lu Fang

Current instance segmentation methods rely heavily on pixel-level annotated images. The huge cost to obtain such fully-annotated images restricts the dataset scale and limits the performance. In this paper, we formally address…

Computer Vision and Pattern Recognition · Computer Science 2022-03-28 Zhenyu Wang , Yali Li , Shengjin Wang

In recent years, computer vision has transformed fields such as medical imaging, object recognition, and geospatial analytics. One of the fundamental tasks in computer vision is semantic image segmentation, which is vital for precise object…

Computer Vision and Pattern Recognition · Computer Science 2023-11-09 Dinar Sharafutdinov , Stanislav Kuskov , Saian Protasov , Alexey Voropaev

Automatic medical image segmentation plays a critical role in scientific research and medical care. Existing high-performance deep learning methods typically rely on large training datasets with high-quality manual annotations, which are…

Image and Video Processing · Electrical Eng. & Systems 2021-11-17 Shanshan Wang , Cheng Li , Rongpin Wang , Zaiyi Liu , Meiyun Wang , Hongna Tan , Yaping Wu , Xinfeng Liu , Hui Sun , Rui Yang , Xin Liu , Jie Chen , Huihui Zhou , Ismail Ben Ayed , Hairong Zheng

In the fast-growing field of Remote Sensing (RS) image analysis, the gap between massive unlabeled datasets and the ability to fully utilize these datasets for advanced RS analytics presents a significant challenge. To fill the gap, our…

Computer Vision and Pattern Recognition · Computer Science 2024-06-18 Song Zhang , Qingzhong Wang , Junyi Liu , Haoyi Xiong

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

As the exorbitant expense of labeling autopilot datasets and the growing trend of utilizing unlabeled data, semi-supervised segmentation on point clouds becomes increasingly imperative. Intuitively, finding out more ``unspoken words''…

Computer Vision and Pattern Recognition · Computer Science 2024-02-13 Yujun Chen , Xin Tan , Zhizhong Zhang , Yanyun Qu , Yuan Xie

Nodule segmentation from breast ultrasound images is challenging yet essential for the diagnosis. Weakly-supervised segmentation (WSS) can help reduce time-consuming and cumbersome manual annotation. Unlike existing weakly-supervised…

Computer Vision and Pattern Recognition · Computer Science 2021-08-03 Yuhao Huang , Xin Yang , Yuxin Zou , Chaoyu Chen , Jian Wang , Haoran Dou , Nishant Ravikumar , Alejandro F Frangi , Jianqiao Zhou , Dong Ni

Pseudo-labeling is significant for semi-supervised instance segmentation, which generates instance masks and classes from unannotated images for subsequent training. However, in existing pipelines, pseudo-labels that contain valuable…

Computer Vision and Pattern Recognition · Computer Science 2023-08-11 Jie Hu , Chen Chen , Liujuan Cao , Shengchuan Zhang , Annan Shu , Guannan Jiang , Rongrong Ji

The objective of Audio-Visual Segmentation (AVS) is to localise the sounding objects within visual scenes by accurately predicting pixel-wise segmentation masks. To tackle the task, it involves a comprehensive consideration of both the data…

Computer Vision and Pattern Recognition · Computer Science 2023-10-10 Jinxiang Liu , Yu Wang , Chen Ju , Chaofan Ma , Ya Zhang , Weidi Xie

Accurate semantic segmentation of terrestrial laser scanning (TLS) point clouds is limited by costly manual annotation. We propose a semi-automated, uncertainty-aware pipeline that integrates spherical projection, feature enrichment,…

Computer Vision and Pattern Recognition · Computer Science 2026-02-10 Fei Zhang , Rob Chancia , Josie Clapp , Amirhossein Hassanzadeh , Dimah Dera , Richard MacKenzie , Jan van Aardt

Recent approaches for weakly supervised instance segmentations depend on two components: (i) a pseudo label generation model that provides instances which are consistent with a given annotation; and (ii) an instance segmentation model,…

Computer Vision and Pattern Recognition · Computer Science 2020-07-21 Aditya Arun , C. V. Jawahar , M. Pawan Kumar

Due to the few annotated labels of 3D point clouds, how to learn discriminative features of point clouds to segment object instances is a challenging problem. In this paper, we propose a simple yet effective 3D instance segmentation…

Computer Vision and Pattern Recognition · Computer Science 2022-10-12 Linghua Tang , Le Hui , Jin Xie

Annotating large-scale LiDAR point clouds for 3D semantic segmentation is costly and time-consuming, which motivates the use of semi-supervised learning (SemiSL). Standard LiDAR SemiSL methods typically adopt a two-step training paradigm,…

Computer Vision and Pattern Recognition · Computer Science 2026-05-19 Bin Yang , Alexandru Paul Condurache

Non-destructive 3D imaging of large multi-particulate samples is essential for quantifying particle-level properties, such as size, shape, and spatial distribution, across applications in mining, materials science, and geology. However,…

Image and Video Processing · Electrical Eng. & Systems 2025-08-25 Philipp D. Lösel , Aleese Barron , Yulai Zhang , Matthias Fabian , Benjamin Young , Nicolas Francois , Andrew M. Kingston