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Colour Image Segmentation with Integrated Left Truncated Bivariate Gaussian Mixture Model and Hierarchical Clustering

  • G. V. S. Rajkumar
  • K. Srinivasa Rao
  • P. Srinivasa Rao
Part of the Advances in Intelligent Systems and Computing book series (AISC, volume 199)

Abstract

Image segmentation plays a dominant role in image analysis and image retrievals. Much work has been reported in literature regarding image segmentation based on Gaussian mixture model (GMM). The main drawback of GMM is regarding the assumption that each image region is characterized by Gaussian component, in which the feature vector is mesokurtic and having infinite range. But in colour images the feature vector is represented by Hue and Saturation which are non- negative and may not be symmetrically distributed. Hence the image segmentation can not be accurate unless the non-negative nature of the feature vector is included. In this paper an image segmentation method is developed and analyzed with the assumption that the bivariate feature vector consisting of Hue and Saturation of each pixel follows a left truncated bivariate Gaussian mixture model. In this method the number of components (Image regions) are determined by Hierarchical clustering. The segmentation algorithm is proposed under Bayesian frame with maximum likelihood. The experimentation with six images taken from Berkeley dataset reveals that the proposed image segmentation method outperforms the existing image segmentation method with GMM and finite left truncated bivariate Gaussian mixture model with K-means.

Keywords

Image Segmentation Bivariate Gaussian Mixture model Image Quality Metrics Hierarchical clustering EM- algorithm 

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Copyright information

© Springer-Verlag Berlin Heidelberg 2013

Authors and Affiliations

  • G. V. S. Rajkumar
    • 1
  • K. Srinivasa Rao
    • 2
  • P. Srinivasa Rao
    • 3
  1. 1.Department of Information TechnologyGITAM UniversityVisakhapatnamIndia
  2. 2.Department of StatisticsAndhra UniversityVisakhapatnamIndia
  3. 3.Department of Computer Science and Systems EngineeringAndhra UniversityVisakhapatnamIndia

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