All particle size and shape analysis are based on python scripts and making use of its image processing package OpenCV
Methodology
Commonly used Two-dimensional sand particle size and shape descriptors are concluded as follows:
Particle size descriptors: (a) diameter of a circle of equal projection area (EQPC); (b) diameter of a circle of equal projection perimeter (PED); (c) maximum and minimum Feret diameters; (d) maximum inscribed and minimum circumscribed circle diameters; and (e) convexity.
