scholarly journals Mean Shift Gradient Vector Flow: A Robust External Force Field for 3D Active Surfaces

2010 ◽  
Author(s):  
Margret Keuper ◽  
Hans Burkhardt ◽  
Olaf Ronneberger ◽  
Jan Padeken ◽  
Patrick Heun
Keyword(s):  
Force Field ◽  
External Force ◽  
Mean Shift ◽  
Gradient Vector Flow ◽  
Gradient Vector ◽  
Active Surfaces ◽  
External Force Field

scholarly journals Improved Algorithm for Gradient Vector Flow Based Active Contour Model Using Global and Local Information

2013 ◽  
Vol 2013 ◽  
pp. 1-8 ◽  
Author(s):  
Jianhui Zhao ◽  
Bingyu Chen ◽  
Mingui Sun ◽  
Wenyan Jia ◽  
Zhiyong Yuan
Keyword(s):  
Force Field ◽  
External Force ◽  
Active Contour ◽  
Active Contours ◽  
Active Contour Model ◽  
Computational Cost ◽  
Local Information ◽  
Gradient Vector Flow ◽  
Gradient Vector ◽  
External Force Field

Active contour models are used to extract object boundary from digital image, but there is poor convergence for the targets with deep concavities. We proposed an improved approach based on existing gradient vector flow methods. Main contributions of this paper are a new algorithm to determine the false part of active contour with higher accuracy from the global force of gradient vector flow and a new algorithm to update the external force field together with the local information of magnetostatic force. Our method has a semidynamic external force field, which is adjusted only when the false active contour exists. Thus, active contours have more chances to approximate the complex boundary, while the computational cost is limited effectively. The new algorithm is tested on irregular shapes and then on real images such as MRI and ultrasound medical data. Experimental results illustrate the efficiency of our method, and the computational complexity is also analyzed.

Bismuthene from sonoelectrochemistry as a superior anode for potassium-ion batteries

2020 ◽  
Vol 8 (1) ◽  
pp. 453-460 ◽  
Author(s):  
Chao Shen ◽  
Tianle Cheng ◽  
Chunyan Liu ◽  
Lu Huang ◽  
Mengyang Cao ◽  
...  
Keyword(s):  
Force Field ◽  
External Force ◽  
Potassium Ion ◽  
Cycle Life ◽  
High Rate ◽  
Rate Performance ◽  
Electrochemical Exfoliation ◽  
Long Cycle Life ◽  
External Force Field ◽  
High Rate Performance

An external force field-assisted electrochemical exfoliation method was adopted to produce few-layered bismuthene nanosheets (FBNs). These FBNs exhibited a high rate performance and ultra-long cycle life for KIBs anode.

scholarly journals Deformation Behavior of Crystalline Polymer under External Force Field Investigated by X-ray and Neutron Scattering Techniques

2009 ◽  
Vol 66 (12) ◽  
pp. 527-535
Author(s):  
Yoshinobu NOZUE ◽  
Takashi SAKURAI ◽  
Tatsuya KASAHARA ◽  
Noboru YAMAGUCHI
Keyword(s):  
Force Field ◽  
Neutron Scattering ◽  
External Force ◽  
Deformation Behavior ◽  
Crystalline Polymer ◽  
X Ray ◽  
External Force Field

scholarly journals Mean shift based gradient vector flow for image segmentation

2013 ◽  
Vol 117 (9) ◽  
pp. 1004-1016 ◽  
Author(s):  
Huiyu Zhou ◽  
Xuelong Li ◽  
Gerald Schaefer ◽  
M. Emre Celebi ◽  
Paul Miller
Keyword(s):  
Image Segmentation ◽  
Mean Shift ◽  
Gradient Vector Flow ◽  
Gradient Vector

scholarly journals Single Molecule Tracking Under an External Force Field Created by Amplifying Hydrodynamic Drag with a Nano-Parachute

2011 ◽  
Vol 100 (3) ◽  
pp. 251a
Author(s):  
Silvan C. Türkcan ◽  
Jean-Marc Allain ◽  
Michel R. Popoff ◽  
Antigoni Alexandrou
Keyword(s):  
Force Field ◽  
External Force ◽  
Single Molecule ◽  
Hydrodynamic Drag ◽  
Single Molecule Tracking ◽  
External Force Field
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