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Rock image segmentation using watershed with shape markers

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2 Author(s)
A. Amankwah ; Process Engineering Department, University of Stellenbosch, 7602 Stellenbosch, South Africa ; C. Aldrich

We propose a method for the creation of object markers used in watershed segmentation of rock images. First, we use adaptive thresholding to segment the rock image since rock particles local background is often different from surrounding particle regions. Object markers are then extracted using the compactness of objects and adaptive morphological reconstruction. The choice of the feature compactness is motivated by the fact that crushed rocks tend to have rounded shapes. Experimental results after comparing the segmented images show that the performance of our algorithm is superior to most standard methods of watershed segmentation. We also show that the proposed algorithm was more robust in the estimation of fines in rock samples than the traditional methods.

Published in:

2010 IEEE 39th Applied Imagery Pattern Recognition Workshop (AIPR)

Date of Conference:

13-15 Oct. 2010