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Pre-training a recognition model with contrastive learning on a large dataset of unlabeled data has shown great potential to boost the performance of a downstream task, e.g., image classification. However, in domains such as medical…

计算机视觉与模式识别 · 计算机科学 2021-08-24 Jizong Peng , Ping Wang , Chrisitian Desrosiers , Marco Pedersoli

Video action segmentation under timestamp supervision has recently received much attention due to lower annotation costs. Most existing methods generate pseudo-labels for all frames in each video to train the segmentation model. However,…

计算机视觉与模式识别 · 计算机科学 2023-04-25 Dazhao Du , Enhan Li , Lingyu Si , Fanjiang Xu , Fuchun Sun

As an important upstream task for many medical applications, supervised landmark localization still requires non-negligible annotation costs to achieve desirable performance. Besides, due to cumbersome collection procedures, the limited…

计算机视觉与模式识别 · 计算机科学 2022-08-02 Zihao Yin , Ping Gong , Chunyu Wang , Yizhou Yu , Yizhou Wang

Automated nodule segmentation is essential for computer-assisted diagnosis in ultrasound images. Nevertheless, most existing methods depend on precise pixel-level annotations by medical professionals, a process that is both costly and…

计算机视觉与模式识别 · 计算机科学 2024-07-19 Xingyue Zhao , Peiqi Li , Xiangde Luo , Meng Yang , Shi Chang , Zhongyu Li

Deep learning has been successfully applied to OCT segmentation. However, for data from different manufacturers and imaging protocols, and for different regions of interest (ROIs), it requires laborious and time-consuming data annotation…

计算机视觉与模式识别 · 计算机科学 2023-05-09 Haoran Zhang , Jianlong Yang , Ce Zheng , Shiqing Zhao , Aili Zhang

The performance of learning-based algorithms improves with the amount of labelled data used for training. Yet, manually annotating data is particularly difficult for medical image segmentation tasks because of the limited expert…

计算机视觉与模式识别 · 计算机科学 2023-09-12 Mélanie Gaillochet , Christian Desrosiers , Hervé Lombaert

This paper presents an approach for surgical phase recognition using video data, aiming to provide a comprehensive understanding of surgical procedures for automated workflow analysis. The advent of robotic surgery, digitized operating…

计算机视觉与模式识别 · 计算机科学 2024-06-14 Syed Abdul Mateen , Niharika Malvia , Syed Abdul Khader , Danny Wang , Deepti Srinivasan , Chi-Fu Jeffrey Yang , Lana Schumacher , Sandeep Manjanna

Surgical scene segmentation is fundamentally crucial for prompting cognitive assistance in robotic surgery. However, pixel-wise annotating surgical video in a frame-by-frame manner is expensive and time consuming. To greatly reduce the…

计算机视觉与模式识别 · 计算机科学 2022-07-21 Yang Yu , Zixu Zhao , Yueming Jin , Guangyong Chen , Qi Dou , Pheng-Ann Heng

Temporal action segmentation is a topic of increasing interest, however, annotating each frame in a video is cumbersome and costly. Weakly supervised approaches therefore aim at learning temporal action segmentation from videos that are…

计算机视觉与模式识别 · 计算机科学 2020-04-01 Mohsen Fayyaz , Juergen Gall

Spannotation is an open source user-friendly tool developed for image annotation for semantic segmentation specifically in autonomous navigation tasks. This study provides an evaluation of Spannotation, demonstrating its effectiveness in…

计算机视觉与模式识别 · 计算机科学 2024-02-29 Samuel O. Folorunsho , William R. Norris

Current methods for 3D semantic segmentation propose training models with limited annotations to address the difficulty of annotating large, irregular, and unordered 3D point cloud data. They usually focus on the 3D domain only, without…

计算机视觉与模式识别 · 计算机科学 2025-08-28 Lechun You , Zhonghua Wu , Weide Liu , Xulei Yang , Jun Cheng , Wei Zhou , Bharadwaj Veeravalli , Guosheng Lin

Recognizing the phases of a laparoscopic surgery (LS) operation form its video constitutes a fundamental step for efficient content representation, indexing and retrieval in surgical video databases. In the literature, most techniques focus…

计算机视觉与模式识别 · 计算机科学 2021-07-27 Constantinos Loukas

Creating large-scale and well-annotated datasets to train AI algorithms is crucial for automated tumor detection and localization. However, with limited resources, it is challenging to determine the best type of annotations when annotating…

计算机视觉与模式识别 · 计算机科学 2024-02-21 Yu-Cheng Chou , Bowen Li , Deng-Ping Fan , Alan Yuille , Zongwei Zhou

Obtaining pixel-level annotations in the medical domain is both expensive and time-consuming, often requiring close collaboration between clinical experts and developers. Semi-supervised medical image segmentation aims to leverage limited…

计算机视觉与模式识别 · 计算机科学 2025-07-23 Lin Xi , Yingliang Ma , Cheng Wang , Sandra Howell , Aldo Rinaldi , Kawal S. Rhode

The scarcity and complexity of voxel-level annotations in 3D medical imaging present significant challenges, particularly due to the domain gap between labeled datasets from well-resourced centers and unlabeled datasets from less-resourced…

计算机视觉与模式识别 · 计算机科学 2024-08-13 Haifan Gong , Yitao Wang , Yihan Wang , Jiashun Xiao , Xiang Wan , Haofeng Li

The costly process of obtaining semantic segmentation labels has driven research towards weakly supervised semantic segmentation (WSSS) methods, using only image-level, point, or box labels. The lack of dense scene representation requires…

计算机视觉与模式识别 · 计算机科学 2021-06-29 Peri Akiva , Kristin Dana

Few-shot semantic segmentation (FSS) offers immense potential in the field of medical image analysis, enabling accurate object segmentation with limited training data. However, existing FSS techniques heavily rely on annotated semantic…

计算机视觉与模式识别 · 计算机科学 2023-07-28 Sanaz Karimijafarbigloo , Reza Azad , Dorit Merhof

To assist surgeons in the operating theatre, surgical phase recognition is critical for developing computer-assisted surgical systems, which requires comprehensive understanding of surgical videos. Although existing studies made great…

计算机视觉与模式识别 · 计算机科学 2023-11-23 Zhen Chen , Yuhao Zhai , Jun Zhang , Jinqiao Wang

Current deep learning paradigms largely benefit from the tremendous amount of annotated data. However, the quality of the annotations often varies among labelers. Multi-observer studies have been conducted to study these annotation…

计算机视觉与模式识别 · 计算机科学 2020-10-05 Xiaosong Wang , Ziyue Xu , Dong Yang , Leo Tam , Holger Roth , Daguang Xu

Video action detection requires dense spatio-temporal annotations, which are both challenging and expensive to obtain. However, real-world videos often vary in difficulty and may not require the same level of annotation. This paper analyzes…

计算机视觉与模式识别 · 计算机科学 2025-08-20 Aayush Rana , Akash Kumar , Vibhav Vineet , Yogesh S Rawat