Results 71 to 80 of about 966,408 (295)

Gaussian Adaptive Density Control with SDF Constraints (GADC-SDF) for 3D Human Avatar Modeling

Algorithms
Three-dimensional Gaussian Splatting (3DGS) methods have achieved real-time rendering and high-precision modeling in 3D human avatar modeling. However, most existing methods perform Gaussian sphere cloning, splitting, and pruning without explicit ...
Yebing Sun, Min Huang, Gangbo Huang, Wenbo Lu, Shi He, Jie Li, Jinhe Su   +6 more
doaj   +1 more source

Flexural Behavior of 3D‐Printed Porous Bouligand‐Structured Polymers: Influence of Pitch Angle and Porosity

Advanced Engineering Materials, EarlyView.
This study examines how helicoidal architectures with different porosities respond to bending. Adjusting layer angle and spacing in 3D‐printed polymers reveals clear tradeoffs between stiffness, strength, and energy absorption. Experiments and simulations highlight designs that distribute stress effectively, offering pathways for optimizing lightweight
Praveenkumar Subhash Patil, Edward D. McCarthy, Parvez Alam   +2 more
wiley   +1 more source

Constraining the Geometry of NeRFs for Accurate DSM Generation from Multi-View Satellite Images

ISPRS International Journal of Geo-Information
Neural Radiance Fields (NeRFs) are an emerging approach to 3D reconstruction that use neural networks to reconstruct scenes. However, its applications for multi-view satellite photogrammetry, which aim to reconstruct the Earth’s surface, struggle to ...
Qifeng Wan, Yuzheng Guan, Qiang Zhao, Xiang Wen, Jiangfeng She   +4 more
doaj   +1 more source

Inverse Identification of Energy‐Dependent Laser Absorptivity in NiTi Laser Powder‐Bed Fusion via Calibrated Melt Pool Simulation

Advanced Engineering Materials, EarlyView.
A combined experimental–computational framework identifies energy‐dependent laser absorptivity for NiTi in laser powder‐bed fusion, applicable to conduction and transition modes. Single‐track experiments and thermofluid smoothed particle hydrodynamics simulations are coupled through inverse analysis of melt pool geometry.
Mohamadreza Afrasiabi, Hadi Moutablaleh, Ignatius A. Setiawan, Mehrshad Mehrpouya   +3 more
wiley   +1 more source

CONSTANT RANK CONSTRAINT QUALIFICATIONS: A GEOMETRIC INTRODUCTION

, 2014
Constraint qualifications (CQ) are assumptions on the algebraic description of the feasible set of an optimization problem that ensure that the KKT conditions hold at any local minimum.
Silva,Paulo J.S., Andreani,Roberto
core   +1 more source

Entropy‐Driven Design of Low‐Melting‐Point Alloys via Compositionally Complex Strategy

Advanced Engineering Materials, EarlyView.
Conventional low‐melting‐point alloys (LMPAs) are limited by a narrow compositional space and inherent property trade‐offs. This review presents an entropy‐driven design strategy that overcomes these limitations, ushering in a new class of low‐melting‐point compositionally complex alloys (LMCCAs).
Yinghui Shang, Jianxiang Zhao, Zhaoqi Chen, Hao Gong, Yinsen Yan, Junlei Tao, Yong Yang   +6 more
wiley   +1 more source

Research on Modeling and Compensation of Generalized Kinematic Error of RCM Manipulators for Minimally Invasive Surgery Robots

Jixie chuandong
There is a safety issue for geometric and non-geometric errors that lead to remote center of motion (RCM) constraint point position errors during the movement of the RCM manipulator.
Liu Fen, Wang Rui, Huang Fang, Sang Hongqiang   +3 more
doaj   +2 more sources

Lunar Visual Pose Estimation Method Combining Geometric Constraints and Environmental Enhancement

Nanjing Hangkong Hangtian Daxue Xuebao
In lunar sampling missions， the slender and flexible configuration of the robotic arm results in significant nonlinear characteristics and uncertainty in the end‑effector’s pose.
DUAN Shaohua, ZHANG Chunjie, JIANG Xiaohan, ZHANG Zuoyu, HU Xiaodong   +4 more
doaj   +1 more source

Controlling Grain Growth in Powder Bed Fusion of Yttria‐Stabilized Zirconia Using Femtosecond Lasers: Challenges and Methodological Insights

Advanced Engineering Materials, EarlyView.
Binder‐free laser powder bed fusion of 8YSZ with a femtosecond laser is used to map process windows linking scan strategy, heat accumulation, and grain growth. Time‐resolved thermography and simulations reveal thermal regimes that enable continuous, vitrified, and fine‐grained 8YSZ surface layers without absorptive additives and demonstrate ...
Markus Kühn, Sarah Kaden, Andrea Barz, Daniel Störzner, Jens Bliedtner, Andrés Fabián Lasagni   +5 more
wiley   +1 more source

AIRBORNE LINEAR ARRAY IMAGE GEOMETRIC RECTIFICATION METHOD BASED ON UNEQUAL SEGMENTATION [PDF]

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2016
As the linear array sensor such as multispectral and hyperspectral sensor has great potential in disaster monitoring and geological survey, the quality of the image geometric rectification should be guaranteed. Different from the geometric rectification
J. M. Li, J. M. Li, C. R. Li, M. Zhou, J. Hu, C. M. Yang   +5 more
doaj   +1 more source