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Gradient-based optimization of engineering designs is limited by non-differentiable components in the typical computer-aided engineering (CAE) workflow, which calculates performance metrics from design parameters. While gradient-based…

Computational Engineering, Finance, and Science · Computer Science 2025-11-17 Andrin Rehmann , Nolan Black , Josiah Bjorgaard , Alessandro Angioi , Andrei Paleyes , Niklas Heim , Dion Häfner , Alexander Lavin

In this work, we propose to resolve the issue existing in current deep learning based organ segmentation systems that they often produce results that do not capture the overall shape of the target organ and often lack smoothness. Since…

Computer Vision and Pattern Recognition · Computer Science 2019-12-10 Yuan Xue , Hui Tang , Zhi Qiao , Guanzhong Gong , Yong Yin , Zhen Qian , Chao Huang , Wei Fan , Xiaolei Huang

Accurate modeling of scattering from three-dimensional (3D) perfectly electrically conducting (PEC) targets at microwave frequencies constitutes a fundamental objective in computational electromagnetics, particularly for radar cross section…

Machine Learning · Computer Science 2026-05-27 Rui Zhu , Yuexing Peng , George C. Alexandropoulos , Wenbo Wang

Recent 3D-based manipulation methods either directly predict the grasp pose using 3D neural networks, or solve the grasp pose using similar objects retrieved from shape databases. However, the former faces generalizability challenges when…

Robotics · Computer Science 2023-10-03 Luobin Wang , Runlin Guo , Quan Vuong , Yuzhe Qin , Hao Su , Henrik Christensen

In this work, we present the computational simulations of holographic metasurfaces to generation of the optical non-diffracting beams. The metasurfaces are designed by the holographic technique and the computer-generated holograms (CGHs) of…

Optics · Physics 2020-10-22 Santiago R. C. Fernandez , Marcos R. R. Gesualdi

Many recent medical segmentation systems rely on powerful deep learning models to solve highly specific tasks. To maximize performance, it is standard practice to evaluate numerous pipelines with varying model topologies, optimization…

Machine Learning · Computer Science 2019-11-06 Mathias Perslev , Erik Bjørnager Dam , Akshay Pai , Christian Igel

Image data set from a multi-spectral animal imaging system is used to address two issues: (a) registering the oscillation in optical coherence tomography (OCT) images due to mouse eye movement and (b) suppressing the shadow region under the…

Image and Video Processing · Electrical Eng. & Systems 2023-03-07 Mayank Goswami

In this study, we present a novel swarm-based approach for generating optimized stress-aligned trajectories for 3D printing applications. The method utilizes swarming dynamics to simulate the motion of virtual agents along the stress…

Optimization and Control · Mathematics 2024-04-17 Xavier Guidetti , Efe C. Balta , John Lygeros

In recent years, 3D convolutional neural networks have become the dominant approach for volumetric medical image segmentation. However, compared to their 2D counterparts, 3D networks introduce substantially more training parameters and…

Image and Video Processing · Electrical Eng. & Systems 2022-06-01 Yuan Wang , Laura Blackie , Irene Miguel-Aliaga , Wenjia Bai

The semantic segmentation of 3D shapes with a high-density of vertices could be impractical due to large memory requirements. To make this problem computationally tractable, we propose a neural-network based approach that produces 3D…

Computer Vision and Pattern Recognition · Computer Science 2020-02-04 Davide Boscaini , Fabio Poiesi

Automated medical image segmentation can assist doctors to diagnose faster and more accurate. Deep learning based models for medical image segmentation have made great progress in recent years. However, the existing models fail to…

Image and Video Processing · Electrical Eng. & Systems 2023-04-26 Lei Shi , Tianyu Gao , Zheng Zhang , Junxing Zhang

We propose a new method for reconstructing controllable implicit 3D human models from sparse multi-view RGB videos. Our method defines the neural scene representation on the mesh surface points and signed distances from the surface of a…

Computer Vision and Pattern Recognition · Computer Science 2022-04-05 Tianhan Xu , Yasuhiro Fujita , Eiichi Matsumoto

Point clouds acquired by 3D scanning devices are often sparse, noisy, and non-uniform, causing a loss of geometric features. To facilitate the usability of point clouds in downstream applications, given such input, we present a…

Computer Vision and Pattern Recognition · Computer Science 2023-10-16 Guangshun Wei , Hao Pan , Shaojie Zhuang , Yuanfeng Zhou , Changjian Li

Retinal blood vessel can assist doctors in diagnosis of eye-related diseases such as diabetes and hypertension, and its segmentation is particularly important for automatic retinal image analysis. However, it is challenging to segment these…

Image and Video Processing · Electrical Eng. & Systems 2021-04-07 Jiawei Zhang , Yanchun Zhang , Xiaowei Xu

3D shape generation aims to produce innovative 3D content adhering to specific conditions and constraints. Existing methods often decompose 3D shapes into a sequence of localized components, treating each element in isolation without…

Computer Vision and Pattern Recognition · Computer Science 2024-07-15 Ruikai Cui , Weizhe Liu , Weixuan Sun , Senbo Wang , Taizhang Shang , Yang Li , Xibin Song , Han Yan , Zhennan Wu , Shenzhou Chen , Hongdong Li , Pan Ji

This paper presents a fully automatic and end-to-end optimised airway segmentation method for thoracic computed tomography, based on the U-Net architecture. We use a simple and low-memory 3D U-Net as backbone, which allows the method to…

Image and Video Processing · Electrical Eng. & Systems 2021-08-04 A. Garcia-Uceda , R. Selvan , Z. Saghir , H. A. W. M. Tiddens , M. de Bruijne

Our ability to produce human-scale bio-manufactured organs is critically limited by the need for vascularization and perfusion. For tissues of variable size and shape, including arbitrarily complex geometries, designing and printing…

We propose a novel point cloud based 3D organ segmentation pipeline utilizing deep Q-learning. In order to preserve shape properties, the learning process is guided using a statistical shape model. The trained agent directly predicts…

Computer Vision and Pattern Recognition · Computer Science 2018-06-18 Xia Zhong , Mario Amrehn , Nishant Ravikumar , Shuqing Chen , Norbert Strobel , Annette Birkhold , Markus Kowarschik , Rebecca Fahrig , Andreas Maier

We introduce a novel neural network-based computational pipeline as a representation-agnostic slicer for multi-axis 3D printing. This advanced slicer can work on models with diverse representations and intricate topology. The approach…

Computational Geometry · Computer Science 2024-05-28 Tao Liu , Tianyu Zhang , Yongxue Chen , Yuming Huang , Charlie C. L. Wang

Deep learning-based medical image segmentation and surface mesh generation typically involve a sequential pipeline from image to segmentation to meshes, often requiring large training datasets while making limited use of prior geometric…

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