Fig. 2

Global workflow for parametric mapping computation. The boundary of the slice is extracted from the original gray-scale image (1), and converted into a polygon (2). The regions of interest are generated within the boundary polygon using the Centroidal Voronoi Diagram (3). Granulometric size distribution for each regions are computed by combining granulometry texture analysis with the regions obtained from the Centroidal Voronoi Diagram (4). For each region, an average size is computed from its granulometric size distribution (5). A parametric mapping is generated using color coding of the average size for each region (6)