Graphical depictions of abstract concepts have played a major role in the formulation and communication of ideas since prehistoric times. The invention of photography in the nineteenth century and more recent advances in visualization techniques have catalyzed an enormous wealth of insights into every field of science and engineering by extending our senses far beyond our natural sensorial capabilities.The field of porous media has also benefited enormously from these developments in visualization techniques. Indeed, improvements in these techniques have led to the better morphological...