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Improved Algorithm for Gradient Vector Flow Based Active Contour Model Using Global and Local Information
Joint Authors
Zhao, Jianhui
Chen, Bingyu
Sun, Mingui
Jia, Wenyan
Yuan, Zhiyong
Source
Issue
Vol. 2013, Issue 2013 (31 Dec. 2013), pp.1-8, 8 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2013-09-24
Country of Publication
Egypt
No. of Pages
8
Main Subjects
Medicine
Information Technology and Computer Science
Abstract EN
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.
American Psychological Association (APA)
Zhao, Jianhui& Chen, Bingyu& Sun, Mingui& Jia, Wenyan& Yuan, Zhiyong. 2013. Improved Algorithm for Gradient Vector Flow Based Active Contour Model Using Global and Local Information. The Scientific World Journal،Vol. 2013, no. 2013, pp.1-8.
https://search.emarefa.net/detail/BIM-1032965
Modern Language Association (MLA)
Zhao, Jianhui…[et al.]. Improved Algorithm for Gradient Vector Flow Based Active Contour Model Using Global and Local Information. The Scientific World Journal No. 2013 (2013), pp.1-8.
https://search.emarefa.net/detail/BIM-1032965
American Medical Association (AMA)
Zhao, Jianhui& Chen, Bingyu& Sun, Mingui& Jia, Wenyan& Yuan, Zhiyong. Improved Algorithm for Gradient Vector Flow Based Active Contour Model Using Global and Local Information. The Scientific World Journal. 2013. Vol. 2013, no. 2013, pp.1-8.
https://search.emarefa.net/detail/BIM-1032965
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1032965