Results 71 to 80 of about 114,423 (180)

Region Information-Based ROI Extraction by Multi-Initial Fast Marching Algorithm

EURASIP Journal on Advances in Signal Processing, 2004
Region of interest (ROI) plays an important role in medical image analysis. In this paper, a new approach to ROI extraction based on the curve evolution is proposed.
Youmin Guo, Min Ye, Hongmei Zhang, Zhengzhong Bian, Yalin Miao   +4 more
doaj   +1 more source

Numerical Study of the Cahn-Hilliard Equation in One, Two and Three Dimensions

, 2004
The Cahn-Hilliard equation is related with a number of interesting physical phenomena like the spinodal decomposition, phase separation and phase ordering dynamics.
Ames, Bianconi, Bray, Cahn, Caixeiro, Chakrabarti, Dagotto, Dagotto, de Mello, de Mello, Douglas, E.V.L. de Mello, Elliot, Elliot, Gunton, Hohenberg, Howald, Lifshitz, Mathews, Mihailovic, Milchev, Otton Teixeira da Silveira Filho, Ovchinnikov, Ovchinnikov, Pan, Park, Toral, Traquada, Wang   +28 more
core   +1 more source

Motion Planning Using Fast Marching Squared Method

, 2015
Robotic motion planning have been, and still is, a very intense research field. Many problems have been already solved and even real-time, optimal motion planning algorithms have been proposed and successfully tested in real-world scenarios. However, other problems are not satisfactory solved yet and also new motion planning subproblems are appearing ...
Garrido Bullón, Luis Santiago, Moreno Lorente, Luis Enrique, Gómez González, Javier Victorio   +2 more
openaire   +3 more sources

Determining candidate polyp morphology from CT colonography using a level-set method [PDF]

, 2005
In this paper we propose a level-set segmentation for polyp candidates in Computer Tomography Colongraphy (CTC). Correct classification of the candidate polyps into polyp and non-polyp is, in most cases, evaluated using shape features.
Chowdhury, Tarik A., Ghita, Ovidiu, Lynch, Michael, Whelan, Paul F.   +3 more
core  

Two semi-Lagrangian fast methods for Hamilton-Jacobi-Bellman equations

, 2013
In this paper we apply the Fast Iterative Method (FIM) for solving general Hamilton-Jacobi-Bellman (HJB) equations and we compare the results with an accelerated version of the Fast Sweeping Method (FSM).
CY Kao, E Cristiani, H Zhao, J Qian, JA Sethian, JA Sethian, JN Tsitsiklis, M Falcone, S Cacace, W-K Jeong, Y Tsai, Z Fu   +11 more
core   +3 more sources

A new numerical well testing approach: Application to characterization of complex fault structures

Petroleum, 2019
Fluid flow in hydrocarbon reservoirs and consequently optimum scenario for hydrocarbon production, is heavily influenced by reservoir heterogeneities. Faults are one of the most common types of heterogeneity found in reservoirs.
Behzad Pouladi, Mohammad Sharifi, Mohammad Reza Akbari, S.M. Hosseini-Nasab   +3 more
doaj   +1 more source

Computational approaches for tortuosity determination in 3D structures [PDF]

, 2013
Tortuosity is a parameter of key importance to study transport properties in either solid phase (thermal, electrical) and/or fluid phase (acoustics, mass/heat flow, etc). This structure-related parameter expresses mathematically the real pathway distance
Brabant, LoesWE050020041371078020001689768400006992220562E324-F0EE-11E1-A9DE-61C894A0A6B4, Cnudde, VeerleeditorWE130019950359788010015827730000-0002-3269-5914F64E9522-F0ED-11E1-A9DE-61C894A0A6B4, Pardo-Alonso, Samuel, Rodríguez-Pérez, MA, Solórzano, Eusebio, Van Hoorebeke, LucTW06WE058010006029720000-0002-1943-1359F4301388-F0ED-11E1-A9DE-61C894A0A6B4, Vicente, J   +6 more
core   +1 more source

Volume-Enclosing Surface Extraction

, 2012
In this paper we present a new method, which allows for the construction of triangular isosurfaces from three-dimensional data sets, such as 3D image data and/or numerical simulation data that are based on regularly shaped, cubic lattices.
B.R. Schlei, Bloomenthal, Boehm, Bolz, Bolz, Cheng, Clare, Cooper, Csernai, Doi, Foley, Gueziec, Herman, Hill, Ho, Lewiner, Lohmann, Lorenzen, Newman, Russ, Salomon, Schlei, Schlei, Schlei, Stock, Thirion   +25 more
core   +1 more source

Sensor Fusion for Social Navigation on a Mobile Robot Based on Fast Marching Square and Gaussian Mixture Model. [PDF]

Sensors (Basel), 2022
Mora A, Prados A, Mendez A, Barber R, Garrido S.   +4 more
europepmc   +1 more source