Results 1 to 10 of about 1,311,092 (117)

A gyrification analysis approach based on Laplace Beltrami eigenfunction level sets [PDF]

NeuroImage, 2021
An accurate measure of the complexity of patterns of cortical folding or gyrification is necessary for understanding normal brain development and neurodevelopmental disorders.
Rosita Shishegar, Fabrizio Pizzagalli, Nellie Georgiou-Karistianis, Gary F. Egan, Neda Jahanshad, Leigh A. Johnston   +5 more
doaj   +2 more sources

GPU-accelerated lung CT segmentation based on level sets and texture analysis [PDF]

Scientific Reports
This paper presents a novel semi-automatic method for lung segmentation in thoracic CT datasets. The fully three-dimensional algorithm is based on a level set representation of an active surface and integrates texture features to improve its robustness ...
Daniel Reska, Marek Kretowski
doaj   +2 more sources

(α,β)-CUT of intuitionistic fuzzy normed ideals [PDF]

Journal of Fuzzy Extension and Applications, 2023
In this paper, the (α,β)-level sets where α and β are elements in the interval [0,1] is introduced. Several related properties for (α,β)-cut of intuitionistic fuzzy normed ideals in a normed ring (NR) will be studied and proven.
Nour Abed Alhaleem, Abd Ghafur Ahmad
doaj   +1 more source

Game Theory for Unmanned Vehicle Path Planning in the Marine Domain: State of the Art and New Possibilities

Journal of Marine Science and Engineering, 2021
Thanks to the advent of new technologies and higher real-time computational capabilities, the use of unmanned vehicles in the marine domain has received a significant boost in the last decade.
Marco Cococcioni, Lorenzo Fiaschi, Pierre F. J. Lermusiaux   +2 more
doaj   +1 more source

A Multi-Fidelity Framework for Wildland Fire Behavior Simulations over Complex Terrain

Atmosphere, 2021
A method for the large-eddy simulation (LES) of wildfire spread over complex terrain is presented. In this scheme, a cut-cell immersed boundary method (CC-IBM) is used to render the complex terrain, defined by a tessellation, on a rectilinear Cartesian ...
Marcos Vanella, Kevin McGrattan, Randall McDermott, Glenn Forney, William Mell, Emanuele Gissi, Paolo Fiorucci   +6 more
doaj   +1 more source

Defect Detection by Analyzing Thermal Infrared Images Covered with Shadows with a Hybrid Approach Driven by Local and Global Intensity Fitting Energy

Engineering Proceedings, 2023
Defect detection using thermal infrared images is used in nondestructive evaluation and testing because it is easy to use. Thermal infrared images recorded the surface temperatures of the target with a thermal infrared camera.
Yishuo Huang, Chia-Chien Hung, Chih-Hung Chiang   +2 more
doaj   +1 more source

Gaussian Mixture Model Based Probabilistic Modeling of Images for Medical Image Segmentation

IEEE Access, 2020
In this paper, we propose a novel image segmentation algorithm that is based on the probability distributions of the object and background. It uses the variational level sets formulation with a novel region based term in addition to the edge-based term ...
Farhan Riaz, Saad Rehman, Muhammad Ajmal, Rehan Hafiz, Ali Hassan, Naif Radi Aljohani, Raheel Nawaz, Rupert Young, Miguel Coimbra   +8 more
doaj   +1 more source

Level Sets Guided by SoDEF-Fitting Energy for River Channel Detection in SAR Images

Remote Sensing, 2023
To achieve river channel detection in SAR (synthetic aperture radar) images, we developed a level-set-based model (LSBM) guided by a designed data-fitting energy which is called the SoDEF (sum of dual exponential functions)-fitting energy.
Bin Han, Anup Basu
doaj   +1 more source

Level Sets of Weak-Morse Functions for Triangular Mesh Slicing

Mathematics, 2020
In the context of CAD CAM CAE (Computer-Aided Design, Manufacturing and Engineering) and Additive Manufacturing, the computation of level sets of closed 2-manifold triangular meshes (mesh slicing) is relevant for the generation of 3D printing patterns ...
Daniel Mejia-Parra, Oscar Ruiz-Salguero, Carlos Cadavid, Aitor Moreno, Jorge Posada   +4 more
doaj   +1 more source

Multi-Resolution Texture-Based 3D Level Set Segmentation

IEEE Access, 2020
This article presents a novel three-dimensional level set method for the segmentation of textured volumes. The algorithm combines sparse and multi-resolution schemes to speed up computations and utilise the multi-scale nature of extracted texture ...
Daniel Reska, Marek Kretowski
doaj   +1 more source