Correlation of Roundness and Sphericity with Complex Fourier Descriptors of 2-Dimensional Projected Images of Soil Particles

초록

Roundness and sphericity have long been considered as measurements of the basic morphological properties of soil particles. Recent progress in optical image processing and analysis has enabled us to automate and rapidly perform Fourier analysis. Thus, obtaining complex Fourier descriptors describing the outline boundary of a 2-dimensional projected image of a soil particle could be performed. In this regard, we performed correlation analysis with the values of roundness, sphericity, and complex Fourier descriptor coefficients for 115 images of soil particles measured and reported in previous studies. The results of the statistical analysis revealed that roundness was strongly negatively correlated with Fourier descriptors of the order less than -5 or higher than +5. The width-to-length ratio sphericity was strongly correlated with the Fourier descriptor of the order of +2.

키워드