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• W2062271656 abstract "In this paper, a two-stage method for segmenting blurry images in the presence of Poisson or multiplicative Gamma noise is proposed. The method is inspired by a previous work on two-stage segmentation and the usage of an I-divergence term to handle the noise. The first stage of our method is to find a smooth solution $u$ to a convex variant of the Mumford--Shah model where the $ell_2$ data-fidelity term is replaced by an I-divergence term. A primal-dual algorithm is adopted to efficiently solve the minimization problem. We prove the convergence of the algorithm and the uniqueness of the solution $u$. Once $u$ is obtained, in the second stage, the segmentation is done by thresholding $u$ into different phases. The thresholds can be given by the users or can be obtained automatically by using any clustering method. In our method, we can obtain any $K$-phase segmentation ($Kgeq 2$) by choosing $(K-1)$ thresholds after $u$ is found. Changing $K$ or the thresholds does not require $u$ to be recomputed. Experimental results show that our two-stage method performs better than many standard two-phase or multiphase segmentation methods for very general images, including antimass, tubular, magnetic resonance imaging, and low-light images." @default.
• W2062271656 created "2016-06-24" @default.
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• W2062271656 date "2014-01-01" @default.
• W2062271656 modified "2023-10-01" @default.
• W2062271656 title "A Two-Stage Image Segmentation Method for Blurry Images with Poisson or Multiplicative Gamma Noise" @default.
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• W2062271656 doi "https://doi.org/10.1137/130920241" @default.
• W2062271656 hasPublicationYear "2014" @default.
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