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Unsupervised domain adaptation (UDA) methods have been broadly utilized to improve the models' adaptation ability in general computer vision. However, different from the natural images, there exist huge semantic gaps for the nuclei from…

Computer Vision and Pattern Recognition · Computer Science 2022-07-05 Canran Li , Dongnan Liu , Haoran Li , Zheng Zhang , Guangming Lu , Xiaojun Chang , Weidong Cai

Supervised deep learning requires a large amount of training samples with annotations (e.g. label class for classification task, pixel- or voxel-wised label map for segmentation tasks), which are expensive and time-consuming to obtain.…

Computer Vision and Pattern Recognition · Computer Science 2020-04-14 Yuanhan Mo , Shuo Wang , Chengliang Dai , Rui Zhou , Zhongzhao Teng , Wenjia Bai , Yike Guo

Active learning aims to reduce labeling efforts by selectively asking humans to annotate the most important data points from an unlabeled pool and is an example of human-machine interaction. Though active learning has been extensively…

Machine Learning · Computer Science 2020-01-31 Hongjing Zhang , S. S. Ravi , Ian Davidson

Semantic segmentation is a fundamental task in medical image analysis and autonomous driving and has a problem with the high cost of annotating the labels required in training. To address this problem, semantic segmentation methods based on…

Computer Vision and Pattern Recognition · Computer Science 2025-05-30 Nagito Saito , Shintaro Ito , Koichi Ito , Takafumi Aoki

Active learning is a paradigm aimed at reducing the annotation effort by training the model on actively selected informative and/or representative samples. Another paradigm to reduce the annotation effort is self-training that learns from a…

Computer Vision and Pattern Recognition · Computer Science 2021-08-27 Javad Zolfaghari Bengar , Joost van de Weijer , Bartlomiej Twardowski , Bogdan Raducanu

Impressive performance on point cloud semantic segmentation has been achieved by fully-supervised methods with large amounts of labelled data. As it is labour-intensive to acquire large-scale point cloud data with point-wise labels, many…

Computer Vision and Pattern Recognition · Computer Science 2023-08-23 Zongyi Xu , Bo Yuan , Shanshan Zhao , Qianni Zhang , Xinbo Gao

Sketch recognition allows natural and efficient interaction in pen-based interfaces. A key obstacle to building accurate sketch recognizers has been the difficulty of creating large amounts of annotated training data. Several authors have…

Computer Vision and Pattern Recognition · Computer Science 2019-03-08 Erelcan Yanik , Tevfik Metin Sezgin

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…

Computer Vision and Pattern Recognition · Computer Science 2020-08-05 Yu-Ting Chang , Qiaosong Wang , Wei-Chih Hung , Robinson Piramuthu , Yi-Hsuan Tsai , Ming-Hsuan Yang

In medical imaging, the heterogeneity of multi-centre data impedes the applicability of deep learning-based methods and results in significant performance degradation when applying models in an unseen data domain, e.g. a new centreor a new…

Computer Vision and Pattern Recognition · Computer Science 2020-08-12 Hongwei Li , Timo Loehr , Anjany Sekuboyina , Jianguo Zhang , Benedikt Wiestler , Bjoern Menze

When we can not assume a large amount of annotated data , active learning is a good strategy. It consists in learning a model on a small amount of annotated data (annotation budget) and in choosing the best set of points to annotate in…

Computer Vision and Pattern Recognition · Computer Science 2022-01-19 Umang Aggarwal , Adrian Popescu , Céline Hudelot

Self-training via pseudo labeling is a conventional, simple, and popular pipeline to leverage unlabeled data. In this work, we first construct a strong baseline of self-training (namely ST) for semi-supervised semantic segmentation via…

Computer Vision and Pattern Recognition · Computer Science 2022-03-04 Lihe Yang , Wei Zhuo , Lei Qi , Yinghuan Shi , Yang Gao

The task of image segmentation is inherently noisy due to ambiguities regarding the exact location of boundaries between anatomical structures. We argue that this information can be extracted from the expert annotations at no extra cost,…

Computer Vision and Pattern Recognition · Computer Science 2021-04-14 Mobarakol Islam , Ben Glocker

Pixel-level labels are particularly expensive to acquire. Hence, pretraining is a critical step to improve models on a task like semantic segmentation. However, prominent algorithms for pretraining neural networks use image-level…

Computer Vision and Pattern Recognition · Computer Science 2023-03-17 Mathilde Caron , Neil Houlsby , Cordelia Schmid

Semantic segmentation is crucial in remote sensing, where high-resolution satellite images are segmented into meaningful regions. Recent advancements in deep learning have significantly improved satellite image segmentation. However, most…

Computer Vision and Pattern Recognition · Computer Science 2024-08-07 Santiago Rivier , Carlos Hinojosa , Silvio Giancola , Bernard Ghanem

Witnessing the success of deep learning neural networks in natural image processing, an increasing number of studies have been proposed to develop deep-learning-based frameworks for medical image segmentation. However, since the pixel-wise…

Image and Video Processing · Electrical Eng. & Systems 2020-07-21 Yuexiang Li , Jiawei Chen , Xinpeng Xie , Kai Ma , Yefeng Zheng

We introduce two criteria to regularize the optimization involved in learning a classifier in a domain where no annotated data are available, leveraging annotated data in a different domain, a problem known as unsupervised domain…

Computer Vision and Pattern Recognition · Computer Science 2020-04-13 Yanchao Yang , Dong Lao , Ganesh Sundaramoorthi , Stefano Soatto

Semantic segmentation of 3D point cloud data often comes with high annotation costs. Active learning automates the process of selecting which data to annotate, reducing the total amount of annotation needed to achieve satisfactory…

Computer Vision and Pattern Recognition · Computer Science 2025-12-08 Johannes Meyer , Jasper Hoffmann , Felix Schulz , Dominik Merkle , Daniel Buescher , Alexander Reiterer , Joschka Boedecker , Wolfram Burgard

Self-training based on pseudo-labels has emerged as a dominant approach for addressing conditional distribution shifts in unsupervised domain adaptation (UDA) for semantic segmentation problems. A notable drawback, however, is that this…

Computer Vision and Pattern Recognition · Computer Science 2023-05-02 Rajshekhar Das , Jonathan Francis , Sanket Vaibhav Mehta , Jean Oh , Emma Strubell , Jose Moura

Object detection is one of the most important and fundamental aspects of computer vision tasks, which has been broadly utilized in pose estimation, object tracking and instance segmentation models. To obtain training data for object…

Computer Vision and Pattern Recognition · Computer Science 2023-03-23 Jiaming Na , Varuna De-Silva

Label-efficient segmentation aims to perform effective segmentation on input data using only sparse and limited ground-truth labels for training. This topic is widely studied in 3D point cloud segmentation due to the difficulty of…

Computer Vision and Pattern Recognition · Computer Science 2024-08-30 Liyao Tang , Zhe Chen , Shanshan Zhao , Chaoyue Wang , Dacheng Tao