3D shape prior active contours for an automatic segmentation of a patient specific femur from a CT scan

2013 ◽  
pp. 289-294
Keyword(s):  
Ct Scan ◽  
Active Contours ◽  
Automatic Segmentation ◽  
Patient Specific ◽  
Shape Prior ◽  
3D Shape

Free Registration Based Shape Prior for Active Contours

2019 ◽  
Author(s):  
Ines sakly ◽  
Mohamed Amine Mezghich ◽  
Slim M'hiri ◽  
Faouzi Ghorbel
Keyword(s):  
Active Contours ◽  
Shape Prior

scholarly journals 3D Brain Segmentation Using Dual-Front Active Contours with Optional User Interaction

2006 ◽  
Vol 2006 ◽  
pp. 1-17 ◽  
Author(s):  
Hua Li ◽  
Anthony Yezzi ◽  
Laurent D. Cohen
Keyword(s):  
Brain Cortex ◽  
Active Contours ◽  
Automatic Segmentation ◽  
User Interaction ◽  
Active Regions ◽  
Brain Images ◽  
Global Minimizers ◽  
Expert User ◽  
Global Nature ◽  
Seed Points

Important attributes of 3D brain cortex segmentation algorithms include robustness, accuracy, computational efficiency, and facilitation of user interaction, yet few algorithms incorporate all of these traits. Manual segmentation is highly accurate but tedious and laborious. Most automatic techniques, while less demanding on the user, are much less accurate. It would be useful to employ a fast automatic segmentation procedure to do most of the work but still allow an expert user to interactively guide the segmentation to ensure an accurate final result. We propose a novel 3D brain cortex segmentation procedure utilizing dual-front active contours which minimize image-based energies in a manner that yields flexibly global minimizers based on active regions. Region-based information and boundary-based information may be combined flexibly in the evolution potentials for accurate segmentation results. The resulting scheme is not only more robust but much faster and allows the user to guide the final segmentation through simple mouse clicks which add extra seed points. Due to the flexibly global nature of the dual-front evolution model, single mouse clicks yield corrections to the segmentation that extend far beyond their initial locations, thus minimizing the user effort. Results on 15 simulated and 20 real 3D brain images demonstrate the robustness, accuracy, and speed of our scheme compared with other methods.

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