Results 51 to 60 of about 734,895 (260)

Covering Polygons is Even Harder [PDF]

arXiv, 2021
In the MINIMUM CONVEX COVER (MCC) problem, we are given a simple polygon $\mathcal P$ and an integer $k$, and the question is if there exist $k$ convex polygons whose union is $\mathcal P$. It is known that MCC is $\mathsf{NP}$-hard [Culberson & Reckhow: Covering polygons is hard, FOCS 1988/Journal of Algorithms 1994] and in $\exists\mathbb{R}$ [O ...
arxiv  

Accurately Models the Relationship Between Physical Response and Structure Using Kolmogorov–Arnold Network

Advanced Science, EarlyView.
The present study underscores the remarkable capabilities of the Kolmogorov‐Arnold Network (KAN) in formula fitting for physical systems. KAN predicts the relationship between the Poisson's ratio of a metamaterial structure and its geometric parameters, demonstrating the transition of Poisson's ratio from positive to negative as the hexagonal component
Yang Wang, Changliang Zhu, Shuzhe Zhang, Changsheng Xiang, Zhibin Gao, Guimei Zhu, Jun Sun, Xiangdong Ding, Baowen Li, Xiangying Shen   +9 more
wiley   +1 more source

Architected Design and Fabrication of Soft Mechanical Metamaterials

Advanced Intelligent Systems, EarlyView.
Recent advancements in additive manufacturing and materials have accelerated research into metamaterial structures, enabling engineered designs with unique properties for diverse applications. However, fabricating these complex structures with intricate topologies and hierarchical arrangements presents significant challenges, requiring novel techniques.
Thileepan Stalin, Aby Raj Plamootil Mathai, Naresh Kumar Thanigaivel, Elgar Kanhere, Saikrishna Dontu, Gumawang Hiramandala, Aaron Chooi, Arturo Castillo Ugalde, Pablo Valdivia Y Alvarado   +8 more
wiley   +1 more source

PolyNet: Polynomial Neural Network for 3D Shape Recognition with PolyShape Representation [PDF]

2021 International Conference on 3D Vision (3DV), 2021
3D shape representation and its processing have substantial effects on 3D shape recognition. The polygon mesh as a 3D shape representation has many advantages in computer graphics and geometry processing. However, there are still some challenges for the existing deep neural network (DNN)-based methods on polygon mesh representation, such as handling ...
arxiv  

Computer Vision for Substrate Detection in High‐Throughput Biomaterial Screens Using Bright‐Field Microscopy

Advanced Intelligent Systems, EarlyView.
It is known that biomaterial properties (e.g., shape, chemistry) direct how the body reacts to implanted materials. However, what features cause specific responses is not well known. High‐throughput screening can identify instructive properties, but manual feature segmentation in large brightfield image datasets limits discovery.
Robert Owen, Aishah Nasir, Mahetab H. Amer, Chenxue Nie, Xuan Xue, Laurence Burroughs, Chris Denning, Ricky D. Wildman, Faraz A. Khan, Morgan R. Alexander, Felicity R. A. J. Rose   +10 more
wiley   +1 more source

GelLight: Illumination Design, Modeling, and Optimization for Camera‐Based Tactile Sensor

Advanced Intelligent Systems, EarlyView.
A systematic modeling and optimization method for camera‐based tactile sensor illumination is proposed, which significantly improves the tactile performance and achieves high geometry reconstruction accuracy. The performance is validated by intensive simulation and real‐world experiments.
Jieji Ren, Wenxin Du, Yueshi Dong, Ningbin Zhang, Heng Guo, Boxin Shi, Jiang Zou, Guoying Gu   +7 more
wiley   +1 more source

A Simple and Correct Even-Odd Algorithm for the Point-in-Polygon Problem for Complex Polygons [PDF]

arXiv, 2012
Determining if a point is in a polygon or not is used by a lot of applications in computer graphics, computer games and geoinformatics. Implementing this check is error-prone since there are many special cases to be considered. This holds true in particular for complex polygons whose edges intersect each other creating holes. In this paper we present a
arxiv  

Volumetric Rendering with Baked Quadrature Fields [PDF]

arXiv, 2023
We propose a novel Neural Radiance Field (NeRF) representation for non-opaque scenes that enables fast inference by utilizing textured polygons. Despite the high-quality novel view rendering that NeRF provides, a critical limitation is that it relies on volume rendering that can be computationally expensive and does not utilize the advancements in ...
arxiv  

Phenobot: An Autodigital Modeling System for in situ Phenotyping in Horticulture

Advanced Intelligent Systems, EarlyView.
This study introduces a robotic phenotyping system for precision agriculture, integrating environmental understanding, motion planning, and in situ plant phenotyping. The system autonomously navigates through real‐world agricultural environments, collects high‐quality plant data, and reconstructs accurate 3D plant models. Results demonstrate the system'
Kewei Hu, Yaoqiang Pan, Tianhao Liu, Hugh Zhou, Chao Chen, Hanwen Kang   +5 more
wiley   +1 more source

Science‐informed policy decisions lead to the creation of a protected area for a wide‐ranging species at risk

Conservation Science and Practice, Volume 4, Issue 12, December 2022., 2022
We describe a decision support framework for the identification of protected areas. Our approach employs criteria pertaining to size, geographic location, habitat suitability, functional connectivity, and the feasibility of different scenarios considering multiple socioeconomic and geophysical constraints.
Mathieu Leblond, Tyler Rudolph, Dominic Boisjoly, Christian Dussault, Martin‐Hugues St‐Laurent   +4 more
wiley   +1 more source