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Dataset expansion can effectively alleviate the problem of data scarcity for medical image segmentation, due to privacy concerns and labeling difficulties. However, existing expansion algorithms still face great challenges due to their…

Image and Video Processing · Electrical Eng. & Systems 2023-06-07 Shitong Shao , Xiaohan Yuan , Zhen Huang , Ziming Qiu , Shuai Wang , Kevin Zhou

Deep neural networks have brought remarkable breakthroughs in medical image analysis. However, due to their data-hungry nature, the modest dataset sizes in medical imaging projects might be hindering their full potential. Generating…

Researchers require timely access to real-world longitudinal electronic health records (EHR) to develop, test, validate, and implement machine learning solutions that improve the quality and efficiency of healthcare. In contrast, health…

Machine Learning · Computer Science 2020-12-21 Siddharth Biswal , Soumya Ghosh , Jon Duke , Bradley Malin , Walter Stewart , Jimeng Sun

Despite the evident practical importance of license plate recognition (LPR), corresponding research is limited by the volume of publicly available datasets due to privacy regulations such as the General Data Protection Regulation (GDPR). To…

Computer Vision and Pattern Recognition · Computer Science 2025-01-08 Mariia Shpir , Nadiya Shvai , Amir Nakib

Access to electronic health record (EHR) data has motivated computational advances in medical research. However, various concerns, particularly over privacy, can limit access to and collaborative use of EHR data. Sharing synthetic EHR data…

Machine Learning · Computer Science 2018-01-15 Edward Choi , Siddharth Biswal , Bradley Malin , Jon Duke , Walter F. Stewart , Jimeng Sun

We investigate the utility of diffusion generative models to efficiently synthesise datasets that effectively train deep learning models for image analysis. Specifically, we propose novel $\Gamma$-distribution Latent Denoising Diffusion…

Image and Video Processing · Electrical Eng. & Systems 2024-10-01 David Stojanovski , Mariana da Silva , Pablo Lamata , Arian Beqiri , Alberto Gomez

Sensitive medical data is often subject to strict usage constraints. In this paper, we trained a generative adversarial network (GAN) on real-world electronic health records (EHR). It was then used to create a data-set of "fake" patients…

Machine Learning · Computer Science 2021-09-07 John Weldon , Tomas Ward , Eoin Brophy

Electronic Health Records (EHRs) are a valuable asset to facilitate clinical research and point of care applications; however, many challenges such as data privacy concerns impede its optimal utilization. Deep generative models,…

Machine Learning · Computer Science 2024-01-12 Ghadeer Ghosheh , Jin Li , Tingting Zhu

Synthetic electronic health records (EHRs) that are both realistic and preserve privacy can serve as an alternative to real EHRs for machine learning (ML) modeling and statistical analysis. However, generating high-fidelity and granular…

Machine Learning · Computer Science 2023-11-13 Brandon Theodorou , Cao Xiao , Jimeng Sun

Electronic health records (EHR) often contain sensitive medical information about individual patients, posing significant limitations to sharing or releasing EHR data for downstream learning and inferential tasks. We use normalizing flows…

Machine Learning · Statistics 2023-02-14 Bingyue Su , Yu Wang , Daniele E. Schiavazzi , Fang Liu

Analyzing electronic health records (EHR) poses significant challenges because often few samples are available describing a patient's health and, when available, their information content is highly diverse. The problem we consider is how to…

Machine Learning · Statistics 2019-12-20 Alexis Bellot , Mihaela van der Schaar

Chest X-rays (CXR) are essential for diagnosing a variety of conditions, but when used on new populations, model generalizability issues limit their efficacy. Generative AI, particularly denoising diffusion probabilistic models (DDPMs),…

In recent years, diffusion models (DMs) have become a popular method for generating synthetic data. By achieving samples of higher quality, they quickly became superior to generative adversarial networks (GANs) and the current…

Computer Vision and Pattern Recognition · Computer Science 2024-05-14 Denisa Qosja , Simon Wagner , Daniel O'Hagan

Generating realistic motions for digital humans is time-consuming for many graphics applications. Data-driven motion synthesis approaches have seen solid progress in recent years through deep generative models. These results offer…

Computer Vision and Pattern Recognition · Computer Science 2022-10-11 Edmund J. C. Findlay , Haozheng Zhang , Ziyi Chang , Hubert P. H. Shum

As acquiring MRIs is expensive, neuroscience studies struggle to attain a sufficient number of them for properly training deep learning models. This challenge could be reduced by MRI synthesis, for which Generative Adversarial Networks…

Image and Video Processing · Electrical Eng. & Systems 2023-09-08 Wei Peng , Ehsan Adeli , Tomas Bosschieter , Sang Hyun Park , Qingyu Zhao , Kilian M. Pohl

Diffusion probabilistic models (DPMs) which employ explicit likelihood characterization and a gradual sampling process to synthesize data, have gained increasing research interest. Despite their huge computational burdens due to the large…

Computer Vision and Pattern Recognition · Computer Science 2024-05-09 Yuheng Fan , Hanxi Liao , Shiqi Huang , Yimin Luo , Huazhu Fu , Haikun Qi

Magnetic resonance (MR) imaging, including cardiac MR, is prone to domain shift due to variations in imaging devices and acquisition protocols. This challenge limits the deployment of trained AI models in real-world scenarios, where…

Computer Vision and Pattern Recognition · Computer Science 2025-08-11 Xin Ci Wong , Duygu Sarikaya , Kieran Zucker , Marc De Kamps , Nishant Ravikumar

Sharing health and behavioral data raises significant privacy concerns, as conventional de-identification methods are susceptible to privacy attacks. Differential Privacy (DP) provides formal guarantees against re-identification risks, but…

Access to high-quality datasets in the medical industry limits machine learning model performance. To address this issue, we propose a Denoising Diffusion Probabilistic Model (DDPM) combined with a UNet architecture for X-ray image…

Image and Video Processing · Electrical Eng. & Systems 2024-01-04 Praveen Mahaulpatha , Thulana Abeywardane , Tomson George

The rapid growth in data availability has facilitated research and development, yet not all industries have benefited equally due to legal and privacy constraints. The healthcare sector faces significant challenges in utilizing patient data…

Methodology · Statistics 2025-11-18 Katariina Perkonoja , Kari Auranen , Joni Virta