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Diffusion-based generative models (DBGMs) perturb data to a target noise distribution and reverse this process to generate samples. The choice of noising process, or inference diffusion process, affects both likelihoods and sample quality.…

机器学习 · 计算机科学 2023-03-06 Raghav Singhal , Mark Goldstein , Rajesh Ranganath

While working within the spatial domain can pose problems associated with ill-conditioned scores caused by power-law decay, recent advances in diffusion-based generative models have shown that transitioning to the wavelet domain offers a…

Deep learning analyses have offered sensitivity leaps in detection of cognitive states from functional MRI (fMRI) measurements across the brain. Yet, as deep models perform hierarchical nonlinear transformations on their input, interpreting…

信号处理 · 电气工程与系统科学 2023-07-20 Hasan Atakan Bedel , Tolga Çukur

Functional magnetic resonance imaging (fMRI) is an emerging neuroimaging modality that is commonly modeled as networks of Regions of Interest (ROIs) and their connections, named functional connectivity, for understanding the brain functions…

神经元与认知 · 定量生物学 2024-10-01 Haokai Zhao , Haowei Lou , Lina Yao , Yu Zhang

Image-to-image translation is a vital component in medical imaging processing, with many uses in a wide range of imaging modalities and clinical scenarios. Previous methods include Generative Adversarial Networks (GANs) and Diffusion Models…

图像与视频处理 · 电气工程与系统科学 2024-08-15 Yinchi Zhou , Tianqi Chen , Jun Hou , Huidong Xie , Nicha C. Dvornek , S. Kevin Zhou , David L. Wilson , James S. Duncan , Chi Liu , Bo Zhou

Magnetic resonance imaging (MRI) is a potent diagnostic tool, but suffers from long examination times. To accelerate the process, modern MRI machines typically utilize multiple coils that acquire sub-sampled data in parallel. Data-driven…

图像与视频处理 · 电气工程与系统科学 2023-10-24 Moritz Erlacher , Martin Zach

Strong generative models can accurately learn channel distributions. This could save recurring costs for physical measurements of the channel. Moreover, the resulting differentiable channel model supports training neural encoders by…

信息论 · 计算机科学 2024-06-12 Muah Kim , Rick Fritschek , Rafael F. Schaefer

Three-dimensional medical image segmentation is one of the most important problems in medical image analysis and plays a key role in downstream diagnosis and treatment. Recent years, deep neural networks have made groundbreaking success in…

计算机视觉与模式识别 · 计算机科学 2019-09-27 Chunwei Ma , Zhanghexuan Ji , Mingchen Gao

We propose a new generative model of projected cosmic mass density maps inferred from weak gravitational lensing observations of distant galaxies (weak lensing mass maps). We construct the model based on a neural style transfer so that it…

宇宙学与河外天体物理 · 物理学 2024-05-24 Masato Shirasaki , Shiro Ikeda

In this work, we tackle the challenging problem of arbitrary image style transfer using a novel style feature representation learning method. A suitable style representation, as a key component in image stylization tasks, is essential to…

计算机视觉与模式识别 · 计算机科学 2022-11-08 Yuxin Zhang , Fan Tang , Weiming Dong , Haibin Huang , Chongyang Ma , Tong-Yee Lee , Changsheng Xu

In clinical practice, full imaging is not always feasible, often due to complex acquisition protocols, stringent privacy regulations, or specific clinical needs. However, missing MR modalities pose significant challenges for tasks like…

计算机视觉与模式识别 · 计算机科学 2025-01-23 Aghiles Kebaili , Jérôme Lapuyade-Lahorgue , Pierre Vera , Su Ruan

Developing new methods for the automated analysis of clinical fetal and neonatal MRI data is limited by the scarcity of annotated pathological datasets and privacy concerns that often restrict data sharing, hindering the effectiveness of…

Driving simulators play a large role in developing and testing new intelligent vehicle systems. The visual fidelity of the simulation is critical for building vision-based algorithms and conducting human driver experiments. Low visual…

计算机视觉与模式识别 · 计算机科学 2022-07-22 Ekim Yurtsever , Dongfang Yang , Ibrahim Mert Koc , Keith A. Redmill

Score-based generative models exhibit state of the art performance on density estimation and generative modeling tasks. These models typically assume that the data geometry is flat, yet recent extensions have been developed to synthesize…

Flow-based Transformer models have achieved state-of-the-art image generation performance, but often suffer from high inference latency and computational cost due to their large parameter sizes. To improve inference efficiency without…

计算机视觉与模式识别 · 计算机科学 2026-03-09 Yuhang Ma , Bo Cheng , Shanyuan Liu , Hongyi Zhou , Liebucha Wu , Dawei Leng , Yuhui Yin

Diffusion Generative Models (DGM) have rapidly surfaced as emerging topics in the field of computer vision, garnering significant interest across a wide array of deep learning applications. Despite their high computational demand, these…

图像与视频处理 · 电气工程与系统科学 2024-11-26 Denisha Thakkar , Vincent Quoc-Huy Trinh , Sonal Varma , Samira Ebrahimi Kahou , Hassan Rivaz , Mahdi S. Hosseini

Diffusion models are powerful tools for sampling from high-dimensional distributions by progressively transforming pure noise into structured data through a denoising process. When equipped with a guidance mechanism, these models can also…

机器学习 · 计算机科学 2026-05-04 Saeed Mohseni-Sehdeh , Walid Saad , Kei Sakaguchi , Tao Yu

Deep learning has made significant progress in addressing challenges in various fields including computational pathology (CPath). However, due to the complexity of the domain shift problem, the performance of existing models will degrade,…

计算机视觉与模式识别 · 计算机科学 2025-03-25 Biwen Meng , Xi Long , Wanrong Yang , Ruochen Liu , Yi Tian , Yalin Zheng , Jingxin Liu

Recently, generative adversarial networks exhibited excellent performances in semi-supervised image analysis scenarios. In this paper, we go even further by proposing a fully unsupervised approach for segmentation applications with prior…

计算机视觉与模式识别 · 计算机科学 2018-08-02 Michael Gadermayr , Laxmi Gupta , Barbara M. Klinkhammer , Peter Boor , Dorit Merhof

Generative adversarial networks (GANs) have shown remarkable success in generating realistic images and are increasingly used in medical imaging for image-to-image translation tasks. However, GANs tend to suffer from a frequency bias…

图像与视频处理 · 电气工程与系统科学 2023-10-18 Ivo M. Baltruschat , Felix Kreis , Alexander Hoelscher , Melanie Dohmen , Matthias Lenga
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