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Scribble-based weakly supervised semantic segmentation leverages only a few annotated pixels as labels to train a segmentation model, presenting significant potential for reducing the human labor involved in the annotation process. This…

Computer Vision and Pattern Recognition · Computer Science 2025-03-19 Xinliang Zhang , Lei Zhu , Shuang Zeng , Hangzhou He , Ourui Fu , Zhengjian Yao , Zhaoheng Xie , Yanye Lu

Large language models (LLMs) are being increasingly tuned to power complex generation tasks such as writing, fact-seeking, querying and reasoning. Traditionally, human or model feedback for evaluating and further tuning LLM performance has…

Computation and Language · Computer Science 2024-04-09 Yukti Makhija , Priyanka Agrawal , Rishi Saket , Aravindan Raghuveer

Segmentation uncertainty models predict a distribution over plausible segmentations for a given input, which they learn from the annotator variation in the training set. However, in practice these annotations can differ systematically in…

Computer Vision and Pattern Recognition · Computer Science 2023-03-29 Kilian Zepf , Eike Petersen , Jes Frellsen , Aasa Feragen

Curating fully annotated datasets for medical image segmentation is labour-intensive and expertise-demanding. To alleviate this problem, prior studies have explored scribble annotations for weakly supervised segmentation. Existing solutions…

Computer Vision and Pattern Recognition · Computer Science 2026-05-08 Ke Zhang , Bomin Wang , Hangqi Zhou , Xiahai Zhuang

Object detection has advanced rapidly in recent years, driven by increasingly large and diverse datasets. However, label errors often compromise the quality of these datasets and affect the outcomes of training and benchmark evaluations.…

Computer Vision and Pattern Recognition · Computer Science 2026-02-02 Sarina Penquitt , Jonathan Klees , Rinor Cakaj , Daniel Kondermann , Matthias Rottmann , Lars Schmarje

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

Assigning meaning to parts of image data is the goal of semantic image segmentation. Machine learning methods, specifically supervised learning is commonly used in a variety of tasks formulated as semantic segmentation. One of the major…

Computer Vision and Pattern Recognition · Computer Science 2021-12-20 Lu Yin , Vlado Menkovski , Shiwei Liu , Mykola Pechenizkiy

Semi-supervised semantic segmentation methods leverage unlabeled data by pseudo-labeling them. Thus the success of these methods hinges on the reliablility of the pseudo-labels. Existing methods mostly choose high-confidence pixels in an…

Computer Vision and Pattern Recognition · Computer Science 2024-07-18 Prantik Howlader , Hieu Le , Dimitris Samaras

Medical image analysis using deep learning is often challenged by limited labeled data and high annotation costs. Fine-tuning the entire network in label-limited scenarios can lead to overfitting and suboptimal performance. Recently, prompt…

Computer Vision and Pattern Recognition · Computer Science 2023-08-10 Fan Bai , Ke Yan , Xiaoyu Bai , Xinyu Mao , Xiaoli Yin , Jingren Zhou , Yu Shi , Le Lu , Max Q. -H. Meng

Label noise is a common problem in real-world datasets, affecting both model training and validation. Clean data are essential for achieving strong performance and ensuring reliable evaluation. While various techniques have been proposed to…

Machine Learning · Computer Science 2025-10-21 Henrique Pickler , Jorge K. S. Kamassury , Danilo Silva

Uncertainty in machine learning models is a timely and vast field of research. In supervised learning, uncertainty can already occur in the first stage of the training process, the annotation phase. This scenario is particularly evident…

Machine Learning · Computer Science 2024-07-24 Katharina Hechinger , Christoph Koller , Xiao Xiang Zhu , Göran Kauermann

Semi-supervised learning (SSL) can reduce the need for large labelled datasets by incorporating unlabelled data into the training. This is particularly interesting for semantic segmentation, where labelling data is very costly and…

Computer Vision and Pattern Recognition · Computer Science 2022-10-20 Sebastian Scherer , Robin Schön , Rainer Lienhart

Large annotated datasets are vital for training segmentation models, but pixel-level labeling is time-consuming, error-prone, and often requires scarce expert annotators, especially in medical imaging. In contrast, coarse annotations are…

Computer Vision and Pattern Recognition · Computer Science 2025-08-27 Le Zhang , Fuping Wu , Arun Thirunavukarasu , Kevin Bronik , Thomas Nichols , Bartlomiej W. Papiez

Label scarcity remains a major challenge in deep learning-based medical image segmentation. Recent studies use strong-weak pseudo supervision to leverage unlabeled data. However, performance is often hindered by inconsistencies between…

Computer Vision and Pattern Recognition · Computer Science 2025-08-12 Zhiqiang Shen , Peng Cao , Xiaoli Liu , Jinzhu Yang , Osmar R. Zaiane

Pixelwise semantic image labeling is an important, yet challenging, task with many applications. Typical approaches to tackle this problem involve either the training of deep networks on vast amounts of images to directly infer the labels…

Computer Vision and Pattern Recognition · Computer Science 2017-12-12 Yu-Hui Huang , Xu Jia , Stamatios Georgoulis , Tinne Tuytelaars , Luc Van Gool

Deep learning usually achieves the best results with complete supervision. In the case of semantic segmentation, this means that large amounts of pixelwise annotations are required to learn accurate models. In this paper, we show that we…

Computer Vision and Pattern Recognition · Computer Science 2020-05-07 Yi Zhu , Zhongyue Zhang , Chongruo Wu , Zhi Zhang , Tong He , Hang Zhang , R. Manmatha , Mu Li , Alexander Smola

How many labeled pixels are needed to segment an image, without any prior knowledge? We conduct an experiment to answer this question. In our experiment, an Oracle is using Active Learning to train a network from scratch. The Oracle has…

Computer Vision and Pattern Recognition · Computer Science 2022-02-15 Daniel Kigli , Ariel Shamir , Shai Avidan

Weakly supervised segmentation is an important problem in medical image analysis due to the high cost of pixelwise annotation. Prior methods, while often focusing on weak labels of 2D images, exploit few structural cues of volumetric…

Computer Vision and Pattern Recognition · Computer Science 2021-05-07 Qian He , Shuailin Li , Xuming He

Annotated data is an essential ingredient in natural language processing for training and evaluating machine learning models. It is therefore very desirable for the annotations to be of high quality. Recent work, however, has shown that…

Computation and Language · Computer Science 2022-09-27 Jan-Christoph Klie , Bonnie Webber , Iryna Gurevych

Semantic segmentation is a powerful method to facilitate visual scene understanding. Each pixel is assigned a label according to a pre-defined list of object classes and semantic entities. This becomes very useful as a means to summarize…

Computer Vision and Pattern Recognition · Computer Science 2018-11-21 Marc Bosch , Gordon A. Christie , Christopher M. Gifford