Characterization of variability in 2-dimensional particle geometry via 3D structured light scanning. (May 2022) - Lee, Chang Hoon
Abstract: In the characterization of the particle morphology via 2D digital image processing, image acquisition needs to be done in proper ways. Otherwise, the resulting parameters are significantly influenced by the procedures. This research characterizes potential variations that can mislead the interpretation of the 2D particle morphology parameters such as sphericity, roundness, and regularity indices depending on a projection angle at which a 2D image is taken. Besides, the 2D parameters are compared to Wadell's "true sphericity" evaluated using a 3D particle model obtained by 3D structured light scanning technology. The resulting variance in the 2D parameters is high, producing approximately more than 0.5 of deviance depending on particles, the definition of the mineral parameters, and projection angles. The variations demonstrated in this research could provide additional insight to the 2D indices by considering 3D particle morphology indices.