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Fig. 1


Illustration of the segmentation and tracking algorithm (snapshot of the G2V simulation). Top panels: raw intensity image (left); map of subimage categories (the number a is shown in grey scale; right). Middle panels: granule segmentation before the multiple-level tracking (MLT; coloured areas = granules; black = intergranular lanes; colours were chosen randomly and for clarity; left); segmented image after MLT (right). Bottom panels: trackable (coloured) and non-trackable (white) granules after the first segmentation/tracking run (left) and after the fifth run (right).

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