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This work presents a unified framework for the unsupervised prediction of physically plausible interpolations between two 3D articulated shapes and the automatic estimation of dense correspondence between them. Interpolation is modelled as…

计算机视觉与模式识别 · 计算机科学 2025-04-11 Adam Hartshorne , Allen Paul , Tony Shardlow , Neill D. F. Campbell

Non-rigid cortical registration is an important and challenging task due to the geometric complexity of the human cortex and the high degree of inter-subject variability. A conventional solution is to use a spherical representation of…

图像与视频处理 · 电气工程与系统科学 2020-07-28 Jieyu Cheng , Adrian V. Dalca , Bruce Fischl , Lilla Zollei

Mosaic Flow is a novel domain decomposition method designed to scale physics-informed neural PDE solvers to large domains. Its unique approach leverages pre-trained networks on small domains to solve partial differential equations on large…

机器学习 · 计算机科学 2023-08-29 Arthur Feeney , Zitong Li , Ramin Bostanabad , Aparna Chandramowlishwaran

Inverse problems governed by partial differential equations (PDEs) are crucial in science and engineering. They are particularly challenging due to ill-posedness, data sparsity, and the added complexity of irregular geometries. Classical…

机器学习 · 计算机科学 2025-09-30 Sifan Wang , Zhikai Wu , David van Dijk , Lu Lu

Recent advances in generative models have shown promise in generating behavior plans for long-horizon, sparse reward tasks. While these approaches have achieved promising results, they often lack a principled framework for hierarchical…

机器人学 · 计算机科学 2026-05-20 Nandiraju Gireesh , Yuanliang Ju , Chaoyi Xu , Weiheng Liu , Yuxuan Wan , He Wang

Accurate cortical surface reconstruction from magnetic resonance imaging (MRI) data is crucial for reliable neuroanatomical analyses. Current methods have to contend with complex cortical geometries, strict topological requirements, and…

图像与视频处理 · 电气工程与系统科学 2025-10-22 Kaveh Moradkhani , R Jarrett Rushmore , Sylvain Bouix

The full 4D cost volume in Recurrent All-Pairs Field Transforms (RAFT) or global matching by Transformer achieves impressive performance for optical flow estimation. However, their memory consumption increases quadratically with input…

计算机视觉与模式识别 · 计算机科学 2025-03-05 Gangwei Xu , Shujun Chen , Hao Jia , Miaojie Feng , Xin Yang

We present a new turbulent data reconstruction method with supervised machine learning techniques inspired by super resolution and inbetweening, which can recover high-resolution turbulent flows from grossly coarse flow data in space and…

流体动力学 · 物理学 2021-01-25 Kai Fukami , Koji Fukagata , Kunihiko Taira

3D shape representations that accommodate learning-based 3D reconstruction are an open problem in machine learning and computer graphics. Previous work on neural 3D reconstruction demonstrated benefits, but also limitations, of point cloud,…

计算机视觉与模式识别 · 计算机科学 2020-11-25 Jun Gao , Wenzheng Chen , Tommy Xiang , Clement Fuji Tsang , Alec Jacobson , Morgan McGuire , Sanja Fidler

Recent advances in localized implicit functions have enabled neural implicit representation to be scalable to large scenes. However, the regular subdivision of 3D space employed by these approaches fails to take into account the sparsity of…

图形学 · 计算机科学 2021-11-02 Jia-Heng Tang , Weikai Chen , Jie Yang , Bo Wang , Songrun Liu , Bo Yang , Lin Gao

Existing rectified flow models are based on linear trajectories between data and noise distributions. This linearity enforces zero curvature, which can inadvertently force the image generation process through low-probability regions of the…

计算机视觉与模式识别 · 计算机科学 2025-08-26 Yan Luo , Drake Du , Hao Huang , Yi Fang , Mengyu Wang

Abdominal organ segmentation from CT and MRI is an essential prerequisite for surgical planning and computer-aided navigation systems. It is challenging due to the high variability in the shape, size, and position of abdominal organs.…

计算机视觉与模式识别 · 计算机科学 2023-10-31 Fabian Bongratz , Anne-Marie Rickmann , Christian Wachinger

Enhancing the efficiency of high-quality image generation using Diffusion Models (DMs) is a significant challenge due to the iterative nature of the process. Flow Matching (FM) is emerging as a powerful generative modeling paradigm based on…

计算机视觉与模式识别 · 计算机科学 2025-05-28 Pascal Zwick , Nils Friederich , Maximilian Beichter , Lennart Hilbert , Ralf Mikut , Oliver Bringmann

Modeling the mechanics of fluid in complex scenes is vital to applications in design, graphics, and robotics. Learning-based methods provide fast and differentiable fluid simulators, however most prior work is unable to accurately model how…

机器学习 · 计算机科学 2023-09-12 Arjun Mani , Ishaan Preetam Chandratreya , Elliot Creager , Carl Vondrick , Richard Zemel

Traditional cortical surface reconstruction is time consuming and limited by the resolution of brain Magnetic Resonance Imaging (MRI). In this work, we introduce Pial Neural Network (PialNN), a 3D deep learning framework for pial surface…

图像与视频处理 · 电气工程与系统科学 2021-09-09 Qiang Ma , Emma C. Robinson , Bernhard Kainz , Daniel Rueckert , Amir Alansary

Spatiotemporal flows govern diverse phenomena across physics, biology, and engineering, yet modelling their multiscale dynamics remains a central challenge. Despite major advances in physics-informed machine learning, existing approaches…

This paper introduces GeoMorph, a novel geometric deep-learning framework designed for image registration of cortical surfaces. The registration process consists of two main steps. First, independent feature extraction is performed on each…

机器学习 · 计算机科学 2023-11-23 Mohamed A. Suliman , Logan Z. J. Williams , Abdulah Fawaz , Emma C. Robinson

Image inpainting techniques have shown significant improvements by using deep neural networks recently. However, most of them may either fail to reconstruct reasonable structures or restore fine-grained textures. In order to solve this…

计算机视觉与模式识别 · 计算机科学 2019-08-13 Yurui Ren , Xiaoming Yu , Ruonan Zhang , Thomas H. Li , Shan Liu , Ge Li

We propose a method for reducing the spatial discretization error of coarse computational fluid dynamics (CFD) problems by enhancing the quality of low-resolution simulations using deep learning. We feed the model with fine-grid data after…

机器学习 · 计算机科学 2024-09-27 Jesus Gonzalez-Sieiro , David Pardo , Vincenzo Nava , Victor M. Calo , Markus Towara

Generating realistic intermediate shapes between non-rigidly deformed shapes is a challenging task in computer vision, especially with unstructured data (e.g., point clouds) where temporal consistency across frames is lacking, and…

计算机视觉与模式识别 · 计算机科学 2025-02-28 Lu Sang , Zehranaz Canfes , Dongliang Cao , Riccardo Marin , Florian Bernard , Daniel Cremers