Liver Function Region Segmentation in Nuclear Medicine Using Mean Shift and Level Set Methods

2016 ◽  
pp. 75-83
Author(s):  
Fang Chen ◽  
Shu Zhu ◽  
Yizhuang Cheng ◽  
Xiaobo Yao ◽  
Weimin Huang ◽  
...  
Keyword(s):  
Nuclear Medicine ◽  
Liver Function ◽  
Level Set ◽  
Mean Shift ◽  
Level Set Methods ◽  
Region Segmentation

scholarly journals On the Relationship between Variational Level Set-Based and SOM-Based Active Contours

2015 ◽  
Vol 2015 ◽  
pp. 1-19 ◽  
Author(s):  
Mohammed M. Abdelsamea ◽  
Giorgio Gnecco ◽  
Mohamed Medhat Gaber ◽  
Eyad Elyan
Keyword(s):  
Level Set ◽  
Active Contour ◽  
Active Contours ◽  
Level Set Methods ◽  
Energy Functional ◽  
Self Organizing Maps ◽  
Complex Shapes ◽  
Variational Level Set ◽  
Preservation Property ◽  
The Relationship

Most Active Contour Models (ACMs) deal with the image segmentation problem as a functional optimization problem, as they work on dividing an image into several regions by optimizing a suitable functional. Among ACMs, variational level set methods have been used to build an active contour with the aim of modeling arbitrarily complex shapes. Moreover, they can handle also topological changes of the contours. Self-Organizing Maps (SOMs) have attracted the attention of many computer vision scientists, particularly in modeling an active contour based on the idea of utilizing the prototypes (weights) of a SOM to control the evolution of the contour. SOM-based models have been proposed in general with the aim of exploiting the specific ability of SOMs to learn the edge-map information via their topology preservation property and overcoming some drawbacks of other ACMs, such as trapping into local minima of the image energy functional to be minimized in such models. In this survey, we illustrate the main concepts of variational level set-based ACMs, SOM-based ACMs, and their relationship and review in a comprehensive fashion the development of their state-of-the-art models from a machine learning perspective, with a focus on their strengths and weaknesses.

Simulations of Anodic Nanopore Growth Using the Smoothed Boundary and Level Set Methods

2016 ◽  
Vol 120 (4) ◽  
pp. 2419-2431 ◽  
Author(s):  
S. DeWitt ◽  
K. Thornton
Keyword(s):  
Level Set ◽  
Level Set Methods

Further results on the optimal control of fronts generated by level set methods

2016 ◽  
Author(s):  
Angelo Alessandri ◽  
Patrizia Bagnerini ◽  
Mauro Gaggero ◽  
Alberto Traverso
Keyword(s):  
Optimal Control ◽  
Level Set ◽  
Level Set Methods

scholarly journals Level-set methods for convex optimization

2018 ◽  
Vol 174 (1-2) ◽  
pp. 359-390 ◽  
Author(s):  
Aleksandr Y. Aravkin ◽  
James V. Burke ◽  
Dmitry Drusvyatskiy ◽  
Michael P. Friedlander ◽  
Scott Roy
Keyword(s):  
Convex Optimization ◽  
Level Set ◽  
Level Set Methods

Multiple Level-Set Methods for Optimal Design of Nonlinear Magnetostatic System

2018 ◽  
Vol 54 (3) ◽  
pp. 1-4 ◽  
Author(s):  
Kyung Sik Seo ◽  
Kang Hyouk Lee ◽  
Il Han Park
Keyword(s):  
Optimal Design ◽  
Level Set ◽  
Level Set Methods ◽  
Multiple Level
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