A bayesian approach for weighting boundary and region information for segmentation

Authors:
Mohand Saïd Allili;Djemel Ziou
Affiliations:
Faculty of Science, Department of Computer Science, Sherbrooke University, Sherbrooke, Quebec, Canada;Faculty of Science, Department of Computer Science, Sherbrooke University, Sherbrooke, Quebec, Canada
Venue:
ACIVS'05 Proceedings of the 7th international conference on Advanced Concepts for Intelligent Vision Systems
Year:
2005

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Abstract

Variational image segmentation combining boundary and region information was and still is the subject of many recent works. This combination is usually subject to arbitrary weighting parameters that control the boundary and region features contribution during the segmentation. However, since the objective functions of the boundary and the region features is different in nature, their arbitrary combination may conduct to local conflicts that stem principally from abrupt illumination changes or the presence of texture inside the regions. In the present paper, we investigate an adaptive estimation of the weighting parameters (hyper-parameters) on the regions data during the segmentation by using a Bayesian method. This permits to give adequate contributions of the boundary and region features to segmentation decision making for pixels and, therefore, improving the accuracy of region boundary localization. We validated the approach on examples of real world images.