Cross-sectional dimensions of fiber and pore networks based on Euclidean distance maps

This study demonstrates the suitability of an Euclidean distance transform (EDT) for assessing the structure of paper. EDT-maps are used for performing a comprehensive assessment of the fiber and pore structure. The suitability of the proposed approach for assessing paper structure is demonstrated with a series of laboratory-made mechanical pulp sheets. Detailed information about the fiber wall thickness, fine material and pore diameters is detailed obtained in an effective way. The method is compared to previously reported procedures for paper structure assessment based on microscopy. The presented EDT-approach can improve the extraction of relevant information about paper structures. The effects of the fiber and pore dimensions on light scattering are assessed.