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Deep neural networks are typically trained by uniformly sampling large datasets across epochs, despite evidence that not all samples contribute equally throughout learning. Recent work shows that progressively reducing the amount of…

机器学习 · 计算机科学 2026-04-15 Amar Gahir , Varshil Patel , Shreyank N Gowda

Coherent imaging through scatter is a challenging task in computational imaging. Both model-based and data-driven approaches have been explored to solve the inverse scattering problem. In our previous work, we have shown that a deep…

光学 · 物理学 2021-02-03 Yuzhe Li , Shiyi Cheng , Yujia Xue , Lei Tian

Accurate noise modelling is important for training of deep learning reconstruction algorithms. While noise models are well known for traditional imaging techniques, the noise distribution of a novel sensor may be difficult to determine a…

机器学习 · 计算机科学 2018-07-11 Felix Horger , Tobias Würfl , Vincent Christlein , Andreas Maier

Currently, deep learning (DL) has achieved the automatic prediction of dose distribution in radiotherapy planning, enhancing its efficiency and quality. However, existing methods suffer from the over-smoothing problem for their commonly…

图像与视频处理 · 电气工程与系统科学 2023-11-07 Zhenghao Feng , Lu Wen , Peng Wang , Binyu Yan , Xi Wu , Jiliu Zhou , Yan Wang

We propose a fast beam orientation selection method, based on deep neural networks (DNN), capable of developing a plan comparable to those by the state-of-the-art column generation method. The novelty of Our model lies in its supervised…

医学物理 · 物理学 2019-12-23 Azar Sadeghnejad Barkousaraie , Olalekan Ogunmolu , Steve Jiang , Dan Nguyen

In this work we explore the application of deep neural networks to the optimization of atomic layer deposition processes based on thickness values obtained at different points of an ALD reactor. We introduce a dataset designed to train…

机器学习 · 计算机科学 2024-06-19 Angel Yanguas-Gil , Jeffrey W. Elam

Deep Learning (DL) models can be used to tackle time series analysis tasks with great success. However, the performance of DL models can degenerate rapidly if the data are not appropriately normalized. This issue is even more apparent when…

LiDAR semantic segmentation provides 3D semantic information about the environment, an essential cue for intelligent systems during their decision making processes. Deep neural networks are achieving state-of-the-art results on large public…

计算机视觉与模式识别 · 计算机科学 2021-12-06 Inigo Alonso , Luis Riazuelo , Luis Montesano , Ana C. Murillo

Purpose: We present a framework for robust automated treatment planning using machine learning, comprising scenario-specific dose prediction and robust dose mimicking. Methods: The scenario dose prediction pipeline is divided into the…

医学物理 · 物理学 2022-10-12 Oskar Eriksson , Tianfang Zhang

A change points detection aims to catch an abrupt disorder in data distribution. Common approaches assume that there are only two fixed distributions for data: one before and another after a change point. Real-world data are richer than…

机器学习 · 计算机科学 2022-04-18 Alexander Stepikin , Evgenia Romanenkova , Alexey Zaytsev

The DeepDoseNet 3D dose prediction model based on ResNet and Dilated DenseNet is proposed. The 340 head-and-neck datasets from the 2020 AAPM OpenKBP challenge were utilized, with 200 for training, 40 for validation, and 100 for testing.…

In the last years, deep learning has dramatically improved the performances in a variety of medical image analysis applications. Among different types of deep learning models, convolutional neural networks have been among the most…

图像与视频处理 · 电气工程与系统科学 2021-04-23 Minh H. Vu , Gabriella Norman , Tufve Nyholm , Tommy Löfstedt

We introduce a new computer aided detection and diagnosis system for lung cancer screening with low-dose CT scans that produces meaningful probability assessments. Our system is based entirely on 3D convolutional neural networks and…

计算机视觉与模式识别 · 计算机科学 2020-01-22 Onur Ozdemir , Rebecca L. Russell , Andrew A. Berlin

The acquisition conditions for low-dose and high-dose CT images are usually different, so that the shifts in the CT numbers often occur. Accordingly, unsupervised deep learning-based approaches, which learn the target image distribution,…

图像与视频处理 · 电气工程与系统科学 2022-07-15 Chanyong Jung , Joonhyung Lee , Sunkyoung You , Jong Chul Ye

In the context of supervised statistical learning, it is typically assumed that the training set comes from the same distribution that draws the test samples. When this is not the case, the behavior of the learned model is unpredictable and…

机器学习 · 计算机科学 2022-05-12 Antonio-Javier Gallego , Jorge Calvo-Zaragoza , Robert B. Fisher

In order to reduce the potential radiation risk, low-dose CT has attracted more and more attention. However, simply lowering the radiation dose will significantly degrade the imaging quality. In this paper, we propose a noise reduction…

医学物理 · 物理学 2016-09-28 Hu Chen , Yi Zhang , Weihua Zhang , Peixi Liao , Ke Li , Jiliu Zhou , Ge Wang

Despite significant research efforts, deep neural networks are still vulnerable to biases: this raises concerns about their fairness and limits their generalization. In this paper, we propose a bias-agnostic approach to mitigate the impact…

机器学习 · 计算机科学 2023-05-08 Rémi Nahon , Van-Tam Nguyen , Enzo Tartaglione

We consider the problem of online learning in the presence of distribution shifts that occur at an unknown rate and of unknown intensity. We derive a new Bayesian online inference approach to simultaneously infer these distribution shifts…

机器学习 · 统计学 2021-10-28 Aodong Li , Alex Boyd , Padhraic Smyth , Stephan Mandt

We study how the training data distribution affects confidence and performance in image classification models. We introduce Embedding Density, a model-agnostic framework that estimates prediction confidence by measuring the distance of test…

机器学习 · 计算机科学 2026-01-28 Maksim Kazanskii , Artem Kasianov

Low-dose CT denoising is a challenging task that has been studied by many researchers. Some studies have used deep neural networks to improve the quality of low-dose CT images and achieved fruitful results. In this paper, we propose a deep…

图像与视频处理 · 电气工程与系统科学 2019-02-28 Maryam Gholizadeh-Ansari , Javad Alirezaie , Paul Babyn