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Dense semantic segmentation is essential for autonomous driving, yet many multi-modal datasets lack pixel-level annotations. The Zenseact Open Dataset (ZOD) provides rich multi-sensor data but only bounding-box labels, limiting its use for…

Computer Vision and Pattern Recognition · Computer Science 2026-05-28 Toomas Tahves , Mauro Bellone , Junyi Gu , Raivo Sell

Quantifying aleatoric uncertainty in medical image segmentation is critical since it is a reflection of the natural variability observed among expert annotators. A conventional approach is to model the segmentation distribution using the…

Computer Vision and Pattern Recognition · Computer Science 2026-04-08 Phi Van Nguyen , Ngoc Huynh Trinh , Duy Minh Lam Nguyen , Phu Loc Nguyen , Quoc Long Tran

This paper investigates methods for estimating uncertainty in semantic segmentation predictions derived from satellite imagery. Estimating uncertainty for segmentation presents unique challenges compared to standard image classification,…

Computer Vision and Pattern Recognition · Computer Science 2025-10-23 Melanie Rey , Andriy Mnih , Maxim Neumann , Matt Overlan , Drew Purves

Annotation scarcity has become a major obstacle for training powerful deep-learning models for medical image segmentation, restricting their deployment in clinical scenarios. To address it, semi-supervised learning by exploiting abundant…

Computer Vision and Pattern Recognition · Computer Science 2023-11-21 Qingjie Zeng , Yutong Xie , Zilin Lu , Mengkang Lu , Yicheng Wu , Yong Xia

Decision trees partition the feature space using hard binary thresholds, assigning identical confidence to instances far from a decision boundary and to those directly on it. We introduce ternary decision trees, which augment each split…

Machine Learning · Computer Science 2026-05-22 William Smits

Partially-supervised multi-organ medical image segmentation aims to develop a unified semantic segmentation model by utilizing multiple partially-labeled datasets, with each dataset providing labels for a single class of organs. However,…

Computer Vision and Pattern Recognition · Computer Science 2024-09-06 Xixi Jiang , Dong Zhang , Xiang Li , Kangyi Liu , Kwang-Ting Cheng , Xin Yang

Semi-supervised learning (SSL) uses unlabeled data during training to learn better models. Previous studies on SSL for medical image segmentation focused mostly on improving model generalization to unseen data. In some applications,…

Semantic scene understanding is crucial for robotics and computer vision applications. In autonomous driving, 3D semantic segmentation plays an important role for enabling safe navigation. Despite significant advances in the field, the…

Computer Vision and Pattern Recognition · Computer Science 2026-03-02 Lucas Nunes , Rodrigo Marcuzzi , Jens Behley , Cyrill Stachniss

A major challenge in Semi-Supervised Learning (SSL) is the limited information available about the class distribution in the unlabeled data. In many real-world applications this arises from the prevalence of long-tailed distributions, where…

Machine Learning · Computer Science 2025-02-04 Khiem Pham , Charles Herrmann , Ramin Zabih

With increasing applications of semantic segmentation, numerous datasets have been proposed in the past few years. Yet labeling remains expensive, thus, it is desirable to jointly train models across aggregations of datasets to enhance data…

Computer Vision and Pattern Recognition · Computer Science 2022-03-01 Dongwan Kim , Yi-Hsuan Tsai , Yumin Suh , Masoud Faraki , Sparsh Garg , Manmohan Chandraker , Bohyung Han

Deep learning is pushing the state-of-the-art in many computer vision applications. However, it relies on large annotated data repositories, and capturing the unconstrained nature of the real-world data is yet to be solved. Semi-supervised…

Computer Vision and Pattern Recognition · Computer Science 2022-07-29 Mamshad Nayeem Rizve , Navid Kardan , Mubarak Shah

Collecting annotations from multiple independent sources could mitigate the impact of potential noises and biases from a single source, which is a common practice in medical image segmentation. Learning segmentation networks from…

Image and Video Processing · Electrical Eng. & Systems 2023-11-14 Yifeng Wang , Luyang Luo , Mingxiang Wu , Qiong Wang , Hao Chen

Traditional semi-supervised learning (SSL) assumes that the feature distributions of labeled and unlabeled data are consistent which rarely holds in realistic scenarios. In this paper, we propose a novel SSL setting, where unlabeled samples…

Computer Vision and Pattern Recognition · Computer Science 2024-06-03 Jiachen Liang , Ruibing Hou , Hong Chang , Bingpeng Ma , Shiguang Shan , Xilin Chen

In microscopy image cell segmentation, it is common to train a deep neural network on source data, containing different types of microscopy images, and then fine-tune it using a support set comprising a few randomly selected and annotated…

Computer Vision and Pattern Recognition · Computer Science 2022-11-21 Youssef Dawoud , Arij Bouazizi , Katharina Ernst , Gustavo Carneiro , Vasileios Belagiannis

Current state-of-the-art object detectors can have significant performance drop when deployed in the wild due to domain gaps with training data. Unsupervised Domain Adaptation (UDA) is a promising approach to adapt models for new…

Computer Vision and Pattern Recognition · Computer Science 2021-08-06 Fuxun Yu , Di Wang , Yinpeng Chen , Nikolaos Karianakis , Tong Shen , Pei Yu , Dimitrios Lymberopoulos , Sidi Lu , Weisong Shi , Xiang Chen

Training deep neural networks with only a few labeled samples can lead to overfitting. This is problematic in semi-supervised learning where only a few labeled samples are available. In this paper, we show that a consequence of overfitting…

Computer Vision and Pattern Recognition · Computer Science 2019-12-24 Christoph Mayer , Matthieu Paul , Radu Timofte

Semantic segmentation neural networks require pixel-level annotations in large quantities to achieve a good performance. In the medical domain, such annotations are expensive, because they are time-consuming and require expert knowledge.…

Computer Vision and Pattern Recognition · Computer Science 2024-10-28 Grzegorz Chlebus , Andrea Schenk , Horst K. Hahn , Bram van Ginneken , Hans Meine

Self-training has greatly facilitated domain adaptive semantic segmentation, which iteratively generates pseudo labels on unlabeled target data and retrains the network. However, realistic segmentation datasets are highly imbalanced, pseudo…

Computer Vision and Pattern Recognition · Computer Science 2022-03-29 Binhui Xie , Longhui Yuan , Shuang Li , Chi Harold Liu , Xinjing Cheng

Both limited annotation and domain shift are prevalent challenges in medical image segmentation. Traditional semi-supervised segmentation and unsupervised domain adaptation methods address one of these issues separately. However, the…

Computer Vision and Pattern Recognition · Computer Science 2024-08-19 Qinghe Ma , Jian Zhang , Lei Qi , Qian Yu , Yinghuan Shi , Yang Gao

Semi-supervised semantic segmentation (SSSS) faces persistent challenges in effectively leveraging unlabeled data, such as ineffective utilization of pseudo-labels, exacerbation of class imbalance biases, and neglect of prediction…

Computer Vision and Pattern Recognition · Computer Science 2025-06-24 Ebenezer Tarubinga , Jenifer Kalafatovich , Seong-Whan Lee