A New Multiphase Soft Segmentation with Adaptive Variants
Joint Authors
Chen, Fuhua
Wang, Hongyuan
Chen, Yunmei
Source
Applied Computational Intelligence and Soft Computing
Issue
Vol. 2013, Issue 2013 (31 Dec. 2013), pp.1-9, 9 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2013-05-23
Country of Publication
Egypt
No. of Pages
9
Main Subjects
Information Technology and Computer Science
Abstract EN
Soft segmentation is more flexible than hard segmentation.
But the membership functions are usually sensitive to noise.
In this paper, we propose a multiphase soft segmentation model for nearly piecewise constant images based on stochastic principle, where pixel intensities are modeled as random variables with mixed Gaussian distribution.
The novelty of this paper lies in three aspects.
First, unlike some existing models where the mean of each phase is modeled as a constant and the variances for different phases are assumed to be the same, the mean for each phase in the Gaussian distribution in this paper is modeled as a product of a constant and a bias field, and different phases are assumed to have different variances, which makes the model more flexible.
Second, we develop a bidirection projected primal dual hybrid gradient (PDHG) algorithm for iterations of membership functions.
Third, we also develop a novel algorithm for explicitly computing the projection from RK to simplex ΔK-1 for any dimension K using dual theory, which is more efficient in both coding and implementation than existing projection methods.
American Psychological Association (APA)
Wang, Hongyuan& Chen, Fuhua& Chen, Yunmei. 2013. A New Multiphase Soft Segmentation with Adaptive Variants. Applied Computational Intelligence and Soft Computing،Vol. 2013, no. 2013, pp.1-9.
https://search.emarefa.net/detail/BIM-508340
Modern Language Association (MLA)
Wang, Hongyuan…[et al.]. A New Multiphase Soft Segmentation with Adaptive Variants. Applied Computational Intelligence and Soft Computing No. 2013 (2013), pp.1-9.
https://search.emarefa.net/detail/BIM-508340
American Medical Association (AMA)
Wang, Hongyuan& Chen, Fuhua& Chen, Yunmei. A New Multiphase Soft Segmentation with Adaptive Variants. Applied Computational Intelligence and Soft Computing. 2013. Vol. 2013, no. 2013, pp.1-9.
https://search.emarefa.net/detail/BIM-508340
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-508340