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We propose an embarrassingly simple point annotation scheme to collect weak supervision for instance segmentation. In addition to bounding boxes, we collect binary labels for a set of points uniformly sampled inside each bounding box. We…

计算机视觉与模式识别 · 计算机科学 2022-06-17 Bowen Cheng , Omkar Parkhi , Alexander Kirillov

Accurate segmentation of brain vessels is crucial for cerebrovascular disease diagnosis and treatment. However, existing methods face challenges in capturing small vessels and handling datasets that are partially or ambiguously annotated.…

图像与视频处理 · 电气工程与系统科学 2023-08-08 Fengming Lin , Yan Xia , Nishant Ravikumar , Qiongyao Liu , Michael MacRaild , Alejandro F Frangi

Semi-supervised crowd analysis is a prominent area of research, as unlabeled data are typically abundant and inexpensive to obtain. However, traditional point-based annotations constrain performance because individual regions are inherently…

计算机视觉与模式识别 · 计算机科学 2026-03-18 Jiyang Huang , Hongru Cheng , Wei Lin , Jia Wan , Antoni B. Chan

Data-driven fault detection has been regarded as a 3D image segmentation task. The models trained from synthetic data are difficult to generalize in some surveys. Recently, training 3D fault segmentation using sparse manual 2D slices is…

计算机视觉与模式识别 · 计算机科学 2024-10-28 Yimin Dou , Kewen Li , Jianbing Zhu , Timing Li , Shaoquan Tan , Zongchao Huang

Weakly-supervised semantic segmentation (WSSS) with image-level labels has been widely studied to relieve the annotation burden of the traditional segmentation task. In this paper, we show that existing fully-annotated base categories can…

计算机视觉与模式识别 · 计算机科学 2022-10-18 Siyuan Zhou , Li Niu , Jianlou Si , Chen Qian , Liqing Zhang

Weakly supervised semantic segmentation is a challenging task as it only takes image-level information as supervision for training but produces pixel-level predictions for testing. To address such a challenging task, most recent…

计算机视觉与模式识别 · 计算机科学 2019-11-20 Bingfeng Zhang , Jimin Xiao , Yunchao Wei , Mingjie Sun , Kaizhu Huang

Using deep learning, we now have the ability to create exceptionally good semantic segmentation systems; however, collecting the prerequisite pixel-wise annotations for training images remains expensive and time-consuming. Therefore, it…

计算机视觉与模式识别 · 计算机科学 2022-10-19 Aneesh Rangnekar , Christopher Kanan , Matthew Hoffman

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

Deep learning approaches for semantic segmentation rely primarily on supervised learning approaches and require substantial efforts in producing pixel-level annotations. Further, such approaches may perform poorly when applied to unseen…

计算机视觉与模式识别 · 计算机科学 2021-10-22 Ying Chen , Xu Ouyang , Kaiyue Zhu , Gady Agam

The expensive annotation cost is notoriously known as the main constraint for the development of the point cloud semantic segmentation technique. Active learning methods endeavor to reduce such cost by selecting and labeling only a subset…

计算机视觉与模式识别 · 计算机科学 2022-04-19 Feifei Shao , Yawei Luo , Ping Liu , Jie Chen , Yi Yang , Yulei Lu , Jun Xiao

Contemporary point cloud segmentation approaches largely rely on richly annotated 3D training data. However, it is both time-consuming and challenging to obtain consistently accurate annotations for such 3D scene data. Moreover, there is…

计算机视觉与模式识别 · 计算机科学 2023-11-13 Jiaxu Liu , Zhengdi Yu , Toby P. Breckon , Hubert P. H. Shum

Interactive 3D point cloud segmentation enables efficient annotation of complex 3D scenes through user-guided prompts. However, current approaches are typically restricted in scope to a single domain (indoor or outdoor), and to a single…

计算机视觉与模式识别 · 计算机科学 2026-02-11 Aniket Gupta , Hanhui Wang , Charles Saunders , Aruni RoyChowdhury , Hanumant Singh , Huaizu Jiang

Existing weakly-supervised semantic segmentation methods using image-level annotations typically rely on initial responses to locate object regions. However, such response maps generated by the classification network usually focus on…

计算机视觉与模式识别 · 计算机科学 2020-08-05 Yu-Ting Chang , Qiaosong Wang , Wei-Chih Hung , Robinson Piramuthu , Yi-Hsuan Tsai , Ming-Hsuan Yang

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…

计算机视觉与模式识别 · 计算机科学 2021-04-28 Iñigo Alonso , Luis Riazuelo , Luis Montesano , Ana C. Murillo

3D Gaussian Splatting (3D-GS) enables real-time 3D scene reconstruction but lacks robust segmentation for editing tasks such as object removal, extraction, and recoloring. Existing approaches that lift 2D segmentations to the 3D domain…

计算机视觉与模式识别 · 计算机科学 2026-05-18 Raushan Joshi , Jean-Yves Guillemaut

The field of medical image segmentation is hindered by the scarcity of large, publicly available annotated datasets. Not all datasets are made public for privacy reasons, and creating annotations for a large dataset is time-consuming and…

计算机视觉与模式识别 · 计算机科学 2024-10-01 Iira Häkkinen , Iaroslav Melekhov , Erik Englesson , Hossein Azizpour , Juho Kannala

3D instance segmentation is crucial for understanding complex 3D environments, yet fully supervised methods require dense point-level annotations, resulting in substantial annotation costs and labor overhead. To mitigate this, box-level…

计算机视觉与模式识别 · 计算机科学 2025-10-15 Youngju Yoo , Seho Kim , Changick Kim

Delineating 3D blood vessels is essential for clinical diagnosis and treatment, however, is challenging due to complex structure variations and varied imaging conditions. Supervised deep learning has demonstrated its superior capacity in…

图像与视频处理 · 电气工程与系统科学 2023-02-08 Huai Chen , Xiuying Wang , Lisheng Wang

In response to the growing demand for 3D object detection in applications such as autonomous driving, robotics, and augmented reality, this work focuses on the evaluation of semi-supervised learning approaches for point cloud data. The…

计算机视觉与模式识别 · 计算机科学 2023-11-23 Maksim Golyadkin , Alexander Gambashidze , Ildar Nurgaliev , Ilya Makarov

A crucial task in scene understanding is 3D object detection, which aims to detect and localize the 3D bounding boxes of objects belonging to specific classes. Existing 3D object detectors heavily rely on annotated 3D bounding boxes during…

计算机视觉与模式识别 · 计算机科学 2020-07-29 Zengyi Qin , Jinglu Wang , Yan Lu