Spatial color image segmentation based on finite non-Gaussian mixture models

Authors:
Ali Sefidpour;Nizar Bouguila
Affiliations:
Concordia Institute for Information Systems Engineering, Concordia University, Montreal, Canada;Concordia Institute for Information Systems Engineering, Concordia University, Montreal, Canada
Venue:
Expert Systems with Applications: An International Journal
Year:
2012

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Abstract

Finite mixture models are one of the most widely and commonly used probabilistic techniques for image segmentation. Although the most well known and commonly used distribution when considering mixture models is the Gaussian, it is certainly not the best approximation for image segmentation and other related image processing problems. In this paper, we propose and investigate the use of several other mixture models based namely on Dirichlet, generalized Dirichlet and Beta-Liouville distributions, which offer more flexibility in data modeling, for image segmentation. A maximum likelihood (ML) based algorithm is applied for estimating the resulted segmentation model's parameters. Spatial information is also employed for figuring out the number of regions in an image and several color spaces are investigated and compared. The experimental results show that the proposed segmentation framework yields good overall performance, on various color scenes, that is better than comparable techniques.