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An efficient iterative thresholding method for image segmentation
DOI:10.1016/j.jcp.2017.08.020.png)
Abstract
En 中文
We proposed an efficient iterative thresholding method for multi-phase image segmentation. The algorithm is based on minimizing piecewise constant Mumford-Shah functional in which the contour length (or perimeter) is approximated by a non-local multi-phase energy. The minimization problem is solved by an iterative method. Each iteration consists of computing simple convolutions followed by a thresholding step. The algorithm is easy to implement and has the optimal complexity O (N log N) per iteration. We also show that the iterative algorithm has the total energy decaying property. We present some numerical results to show the efficiency of our method. (C) 2017 Elsevier Inc. All rights reserved.
Keywords:
Iterative thresholding
Image segmentation
Piecewise constant Mumford-Shah functional
Convolution
Fast Fourier transform
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