A narrow-band gradient-augmented level set method for multiphase incompressible flow

2014 ◽  
Vol 273 ◽  
pp. 12-37 ◽  
Author(s):  
Curtis Lee ◽  
John Dolbow ◽  
Peter J. Mucha
Keyword(s):  
Level Set Method ◽  
Level Set ◽  
Incompressible Flow ◽  
Narrow Band

scholarly journals A Narrow-Band Level Set Method Applied to EIT in Brain for Cryosurgery Monitoring

2006 ◽  
Vol 53 (11) ◽  
pp. 2257-2264 ◽  
Author(s):  
M. Soleimani ◽  
O. Dorn ◽  
W.R.B. Lionheart
Keyword(s):  
Level Set Method ◽  
Level Set ◽  
Narrow Band

Topology Optimization of Total Femur Structure: Application of Parameterized Level Set Method Under Geometric Constraints

2015 ◽  
Vol 138 (1) ◽  
Author(s):  
Xiaowei Deng ◽  
Yingjun Wang ◽  
Jinhui Yan ◽  
Tao Liu ◽  
Shuting Wang
Keyword(s):  
Topology Optimization ◽  
Level Set Method ◽  
Level Set ◽  
Narrow Band ◽  
Geometric Constraints ◽  
Contour Method ◽  
Viable Option ◽  
Level Set Function ◽  
Set Function ◽  
Constraint Level

Optimization of the femur prosthesis is a key issue in femur replacement surgeries that provide a viable option for limb salvage rather than amputation. To overcome the drawback of the conventional techniques that do not support topology optimization of the prosthesis design, a parameterized level set method (LSM) topology optimization with arbitrary geometric constraints is presented. A predefined narrow band along the complex profile of the original femur is preserved by applying the contour method to construct the level set function, while the topology optimization is carried out inside the cavity. The Boolean R-function is adopted to combine the free boundary and geometric constraint level set functions to describe the composite level set function of the design domain. Based on the minimum compliance goal, three different designs of 2D femur prostheses subject to the target cavity fill ratios 34%, 54%, and 74%, respectively, are illustrated.

Detection and Extraction of Moving Object in Intelligent Surveillance System

2013 ◽  
Vol 401-403 ◽  
pp. 1027-1030
Author(s):  
Wen Hua Qiu ◽  
Zhen Zhen Qiu ◽  
Liang Wang
Keyword(s):  
Level Set Method ◽  
Level Set ◽  
Surveillance System ◽  
Object Segmentation ◽  
Narrow Band ◽  
Segmentation Result ◽  
Intelligent Surveillance ◽  
System A ◽  
Level Set Segmentation ◽  
Video Frames

To solve the low automatic degree and low accurate alarm rate in the traditional intelligent surveillance system, a motion object segmentation algorithm based on level set method is proposed and implemented. The algorithm gains the primal contour curve by luminance difference between the video frames, and sets the curve as the primal zero level set. Then the narrow band level set algorithm is used to evolve the curve until achieving the segmentation result. Experimental results show that this method can greatly save the level set segmentation time and increase the detecting efficiency.

Sharp Interface Capturing Methods Based on Level-Set Method for Incompressible Flow With Surface Tension

2003 ◽  
Author(s):  
Frederic Couderc ◽  
Jean-Luc Estivalezes
Keyword(s):  
Surface Tension ◽  
Level Set Method ◽  
Level Set ◽  
Incompressible Flow ◽  
Flow Simulation ◽  
Sharp Interface ◽  
Jump Conditions ◽  
Two Phase ◽  
Interface Capturing ◽  
Miscible Fluid

In this paper, we present the development of a code for two-phase incompressible flow simulation with interface. Interface between non miscible fluid is captured by a level-set method. However, unlike classical approachs, jump conditions throught the interface are explicitely taken into account without any smoothing. Different tests cases are then simulated and show drastic improvement compared to existing methods like VOF or others.

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