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We present Score-Guided Human Mesh Recovery (ScoreHMR), an approach for solving inverse problems for 3D human pose and shape reconstruction. These inverse problems involve fitting a human body model to image observations, traditionally…

计算机视觉与模式识别 · 计算机科学 2024-03-15 Anastasis Stathopoulos , Ligong Han , Dimitris Metaxas

Score-based diffusion models provide a powerful way to model images using the gradient of the data distribution. Leveraging the learned score function as a prior, here we introduce a way to sample data from a conditional distribution given…

图像与视频处理 · 电气工程与系统科学 2022-07-19 Hyungjin Chung , Jong Chul Ye

Shape measures have emerged as promising descriptors of white matter tractography, offering complementary insights into anatomical variability and associations with cognitive and clinical phenotypes. However, conventional methods for…

图像与视频处理 · 电气工程与系统科学 2025-10-22 Yui Lo , Yuqian Chen , Dongnan Liu , Leo Zekelman , Jarrett Rushmore , Yogesh Rathi , Nikos Makris , Alexandra J. Golby , Fan Zhang , Weidong Cai , Lauren J. O'Donnell

Expansion of diffusion MRI (dMRI) both into the realm of strong gradients, and into accessible imaging with portable low-field devices, brings about the challenge of gradient nonlinearities. Spatial variations of the diffusion gradients…

Diffusion models are important in tissue engineering as they enable an understanding of molecular delivery to cells in tissue constructs. As three-dimensional (3D) tissue constructs become larger, more intricate, and more clinically…

组织与器官 · 定量生物学 2015-12-22 Richard J. McMurtrey

Diffusion Maps framework is a kernel based method for manifold learning and data analysis that defines diffusion similarities by imposing a Markovian process on the given dataset. Analysis by this process uncovers the intrinsic geometric…

机器学习 · 统计学 2015-11-20 Moshe Salhov , Amit Bermanis , Guy Wolf , Amir Averbuch

Three-dimensional molecular generators based on diffusion models can now reach near-crystallographic accuracy, yet they remain fragmented across tasks. SMILES-only inputs, two-stage pretrain-finetune pipelines, and one-task-one-model…

生物大分子 · 定量生物学 2025-07-11 Dong Xu , Zhangfan Yang , Sisi Yuan , Jenna Xinyi Yao , Jiangqiang Li , Junkai Ji

Variational data assimilation in ocean models depends on the ability to model general correlation operators in the presence of coastlines. Grid-point filters based on diffusion operators are widely used for this purpose, but come with a…

数据分析、统计与概率 · 物理学 2023-12-11 Folke K Skrunes , Mayeul Destouches , Anthony Weaver , Guillaume Coulaud , Olivier Goux , Corentin Lapeyre

Recent advances in diffusion models bring state-of-the-art performance on image generation tasks. However, empirical results from previous research in diffusion models imply an inverse correlation between density estimation and sample…

机器学习 · 计算机科学 2022-06-14 Dongjun Kim , Seungjae Shin , Kyungwoo Song , Wanmo Kang , Il-Chul Moon

Diffusion Magnetic Resonance Imaging (DMRI) is the only non-invasive imaging technique which is able to detect the principal directions of water diffusion as well as neurites density in the human brain. Exploiting the ability of Spherical…

计算机视觉与模式识别 · 计算机科学 2017-09-04 Mauro Zucchelli , Maxime Descoteaux , Gloria Menegaz

In computer-assisted surgery, automatically recognizing anatomical organs is crucial for understanding the surgical scene and providing intraoperative assistance. While machine learning models can identify such structures, their deployment…

计算机视觉与模式识别 · 计算机科学 2024-11-22 Danush Kumar Venkatesh , Dominik Rivoir , Micha Pfeiffer , Fiona Kolbinger , Stefanie Speidel

Diffusion models excel at capturing the natural design spaces of images, molecules, DNA, RNA, and protein sequences. However, rather than merely generating designs that are natural, we often aim to optimize downstream reward functions while…

Statistical shape modeling (SSM) is an enabling quantitative tool to study anatomical shapes in various medical applications. However, directly using 3D images in these applications still has a long way to go. Recent deep learning methods…

计算机视觉与模式识别 · 计算机科学 2023-10-04 Abu Zahid Bin Aziz , Jadie Adams , Shireen Elhabian

Magnetic Resonance Elastography (MRE) has become an essential tool in assessing the mechanical properties of soft tissues in-vivo, prompting significant progress in new inversion algorithms. This creates a need for a benchmarking framework…

As a class of generative artificial intelligence frameworks inspired by statistical physics, diffusion models have shown extraordinary performance in synthesizing complicated data distributions through a denoising process gradually guided…

机器学习 · 计算机科学 2026-04-23 Fangjun Hu , Guangkuo Liu , Yifan F. Zhang , Xun Gao

Magnetic resonance imaging (MRI) is a vital diagnostic tool, but its inherently long acquisition times reduce clinical efficiency and patient comfort. Recent advancements in deep learning, particularly diffusion models, have improved…

图像与视频处理 · 电气工程与系统科学 2026-04-28 Yuxuan Zhang , Jinkui Hao , Bo Zhou

In this work, we propose a novel framework for estimating the dimension of the data manifold using a trained diffusion model. A diffusion model approximates the score function i.e. the gradient of the log density of a noise-corrupted…

机器学习 · 计算机科学 2023-05-26 Jan Stanczuk , Georgios Batzolis , Teo Deveney , Carola-Bibiane Schönlieb

Image classification serves as the cornerstone of computer vision, traditionally achieved through discriminative models based on deep neural networks. Recent advancements have introduced classification methods derived from generative…

计算机视觉与模式识别 · 计算机科学 2024-12-16 Chunxiao Li , Xiaoxiao Wang , Boming Miao , Chuanlong Xie , Zizhe Wang , Yao Zhu

Surface wave dispersion curve inversion plays a critical role in both shallow resource exploration and deep geological studies, yet it remains hindered by sensitivity to initial models and low computational efficiency. Recently, data-driven…

Accurately capturing the full-range response of structures is crucial in structural health monitoring (SHM) for ensuring safety and operational integrity. However, limited sensor deployment due to cost, accessibility, or scale often hinders…

计算工程、金融与科学 · 计算机科学 2025-09-25 Wingho Feng , Quanwang Li , Chen Wang , Jian-sheng Fan