基于双随机场能量函数的区域化图像分割<sup>*</sup>

doi:10.16451/j.cnki.Issn1003-6059.201701004

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Abstract To improve anti-noise capability of image segmentation and take full advantage of energy functions in feature and label fields, a regional image segmentation based on energy functions for double random fields is proposed. Firstly, an image domain is partitioned into a set of sub-regions by a geometry tessellation technique. Based on the tessellation, negative logarithm of multi-Gaussian probability distribution is employed to define regionalized feature field energy function to describe the homogeneity of statistical distribution for pixel colors in a homogeneous region. The improved Potts model is the extension of the traditional model for the labels of a pixel and its neighbor pixels, and it is used to define regionalized label field energy function to characterize the relativity of the labels for sub-regions. Combine feature field and label field, and Kullback-Leibler divergence is utilized to define the heterogeneous energy function for describing the heterogeneity of color distributions among different homogeneous regions. The unconditional Gibbs function is adopted to transform the defined energy functions into probability functions for image segmentation. Finally, based on the maximization of probability distribution scheme, Metropolis-Hastings sampler is designed to obtain the optimal segmentation. Synthetic, remote sensing and natural texture images are segmented by several algorithms. Segmentation results show the proposed algorithm realizes image segmentation accurately and efficiently.

Key words： Double Random Fields Regional Tessellation Image Segmentation Energy Function

Received: 07 March 2016

ZTFLH:

TP 751

Fund:Supported by National Natural Science Foundation of China(No.41301479,41271435), Natural Science Foundation of Liaoning Province(No.201502190)

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	ZHAO Quanhua
	ZHAO Xuemei
	LI Yu

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ZHAO Quanhua,ZHAO Xuemei,LI Yu. Regional Image Segmentation Based on Energy Functions for Double Random Fields[J]. , 2017, 30(1): 32-42.

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http://manu46.magtech.com.cn/Jweb_prai/EN/10.16451/j.cnki.Issn1003-6059.201701004 OR http://manu46.magtech.com.cn/Jweb_prai/EN/Y2017/V30/I1/32

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