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Recent advances of 3D acquisition devices have enabled large-scale acquisition of 3D scene data. Such data, if completely and well annotated, can serve as useful ingredients for a wide spectrum of computer vision and graphics works such as…

Computer Vision and Pattern Recognition · Computer Science 2016-10-20 Duc Thanh Nguyen , Binh-Son Hua , Lap-Fai Yu , Sai-Kit Yeung

Most existing point cloud instance and semantic segmentation methods rely heavily on strong supervision signals, which require point-level labels for every point in the scene. However, such strong supervision suffers from large annotation…

Computer Vision and Pattern Recognition · Computer Science 2022-07-26 An Tao , Yueqi Duan , Yi Wei , Jiwen Lu , Jie Zhou

Most of the state-of-the-art semantic segmentation reported in recent years is based on fully supervised deep learning in the medical domain. How?ever, the high-quality annotated datasets require intense labor and domain knowledge,…

Image and Video Processing · Electrical Eng. & Systems 2022-04-25 Pingping Dai , Haiming Zhu , Shuang Ge , Ruihan Zhang , Xiang Qian , Xi Li , Kehong Yuan

The ability to quickly annotate medical imaging data plays a critical role in training deep learning frameworks for segmentation. Doing so for image volumes or video sequences is even more pressing as annotating these is particularly…

Computer Vision and Pattern Recognition · Computer Science 2021-07-20 Laurent Lejeune , Raphael Sznitman

In clinical medicine, precise image segmentation can provide substantial support to clinicians. However, obtaining high-quality segmentation typically demands extensive pixel-level annotations, which are labor-intensive and expensive.…

Computer Vision and Pattern Recognition · Computer Science 2025-10-30 Tao Wang , Xinlin Zhang , Zhenxuan Zhang , Yuanbo Zhou , Yuanbin Chen , Longxuan Zhao , Chaohui Xu , Shun Chen , Guang Yang , Tong Tong

Models for semantic segmentation require a large amount of hand-labeled training data which is costly and time-consuming to produce. For this purpose, we present a label fusion framework that is capable of improving semantic pixel labels of…

Computer Vision and Pattern Recognition · Computer Science 2022-02-25 Florian Fervers , Timo Breuer , Gregor Stachowiak , Sebastian Bullinger , Christoph Bodensteiner , Michael Arens

Weakly supervised LiDAR semantic segmentation has made significant strides with limited labeled data. However, most existing methods focus on the network training under weak supervision, while efficient annotation strategies remain largely…

Computer Vision and Pattern Recognition · Computer Science 2024-08-13 Yilong Chen , Zongyi Xu , xiaoshui Huang , Ruicheng Zhang , Xinqi Jiang , Xinbo Gao

One of the key challenges in the battle against the Coronavirus (COVID-19) pandemic is to detect and quantify the severity of the disease in a timely manner. Computed tomographies (CT) of the lungs are effective for assessing the state of…

Image and Video Processing · Electrical Eng. & Systems 2020-07-15 Issam Laradji , Pau Rodriguez , Frederic Branchaud-Charron , Keegan Lensink , Parmida Atighehchian , William Parker , David Vazquez , Derek Nowrouzezahrai

Large-scale annotated datasets allow AI systems to learn from and build upon the knowledge of the crowd. Many crowdsourcing techniques have been developed for collecting image annotations. These techniques often implicitly rely on the fact…

Human-Computer Interaction · Computer Science 2016-10-07 Gunnar A. Sigurdsson , Olga Russakovsky , Ali Farhadi , Ivan Laptev , Abhinav Gupta

With the rapid adoption of multimodal large language models (MLLMs) across diverse applications, there is a pressing need for task-centered, high-quality training data. A key limitation of current training datasets is their reliance on…

Computer Vision and Pattern Recognition · Computer Science 2025-11-18 Xiaoyu Lin , Aniket Ghorpade , Hansheng Zhu , Justin Qiu , Dea Rrozhani , Monica Lama , Mick Yang , Zixuan Bian , Ruohan Ren , Alan B. Hong , Jiatao Gu , Chris Callison-Burch

High-quality data is crucial for the success of machine learning, but labeling large datasets is often a time-consuming and costly process. While semi-supervised learning can help mitigate the need for labeled data, label quality remains an…

Computer Vision and Pattern Recognition · Computer Science 2023-05-23 Lars Schmarje , Vasco Grossmann , Tim Michels , Jakob Nazarenus , Monty Santarossa , Claudius Zelenka , Reinhard Koch

Segmentation maps of medical images annotated by medical experts contain rich spatial information. In this paper, we propose to decompose annotation maps to learn disentangled and richer feature transforms for segmentation problems in…

Image and Video Processing · Electrical Eng. & Systems 2019-06-10 Yizhe Zhang , Michael T. C. Ying , Danny Z. Chen

The need for labour intensive pixel-wise annotation is a major limitation of many fully supervised learning methods for segmenting bioimages that can contain numerous object instances with thin separations. In this paper, we introduce a…

Computer Vision and Pattern Recognition · Computer Science 2020-09-11 Rihuan Ke , Aurélie Bugeau , Nicolas Papadakis , Peter Schuetz , Carola-Bibiane Schönlieb

Annotating lidar point clouds for autonomous driving is a notoriously expensive and time-consuming task. In this work, we show that the quality of recent self-supervised lidar scan representations allows a great reduction of the annotation…

Computer Vision and Pattern Recognition · Computer Science 2024-07-23 Nermin Samet , Gilles Puy , Oriane Siméoni , Renaud Marlet

High-quality training data play a key role in image segmentation tasks. Usually, pixel-level annotations are expensive, laborious and time-consuming for the large volume of training data. To reduce labelling cost and improve segmentation…

Computer Vision and Pattern Recognition · Computer Science 2021-10-27 Yuying Hao , Yi Liu , Zewu Wu , Lin Han , Yizhou Chen , Guowei Chen , Lutao Chu , Shiyu Tang , Zhiliang Yu , Zeyu Chen , Baohua Lai

Recent trends in semi-supervised learning have significantly boosted the performance of 3D semi-supervised medical image segmentation. Compared with 2D images, 3D medical volumes involve information from different directions, e.g.,…

Computer Vision and Pattern Recognition · Computer Science 2023-03-24 Heng Cai , Shumeng Li , Lei Qi , Qian Yu , Yinghuan Shi , Yang Gao

We propose an approach to semantic segmentation that achieves state-of-the-art supervised performance when applied in a zero-shot setting. It thus achieves results equivalent to those of the supervised methods, on each of the major semantic…

Computer Vision and Pattern Recognition · Computer Science 2024-05-01 Wei Yin , Yifan Liu , Chunhua Shen , Baichuan Sun , Anton van den Hengel

Annotation is a major hurdle in the semantic segmentation of microscopy images and volumes due to its prerequisite expertise and effort. This work enables the training of semantic segmentation networks on images with only a single point for…

Computer Vision and Pattern Recognition · Computer Science 2021-03-22 Shijie Li , Neel Dey , Katharina Bermond , Leon von der Emde , Christine A. Curcio , Thomas Ach , Guido Gerig

Semantic segmentation has made tremendous progress in recent years. However, satisfying performance highly depends on a large number of pixel-level annotations. Therefore, in this paper, we focus on the semi-supervised segmentation problem…

Computer Vision and Pattern Recognition · Computer Science 2021-06-29 Xin Lai , Zhuotao Tian , Li Jiang , Shu Liu , Hengshuang Zhao , Liwei Wang , Jiaya Jia

Annotating videos with object segmentation masks typically involves a two stage procedure of drawing polygons per object instance for all the frames and then linking them through time. While simple, this is a very tedious, time consuming…

Computer Vision and Pattern Recognition · Computer Science 2021-01-19 Namdar Homayounfar , Justin Liang , Wei-Chiu Ma , Raquel Urtasun