Seminarium "Modeling of Complex Systems"

In this work, we have used 4D micro-tomography (XCT) to study the dissolution channels aka wormholes. 16-bit grayscale scans of dissolving samples are obtained at constant time-interval during the dissolution experiments. The grayscale scans are segmented to binary images by a novel volume-based segmentation technique to preserve the maximum features of the wormhole. Finally, image-processing techniques such as connected-component labelling, smoothing median filters and skeletonization are used to extract the wormholes and their geometrical properties. Several measures such as tip-propagation, wastefulness and branchedness have been proposed which show a high correlation of wormhole propagation speed with rock internal structure.