Estimation of pebble size distributions for geophysical applications

We consider the problem of generating size-frequency distributions of pebbles for mining support applications. Based on simple image processing operations and some geometrical constraints, we develop a scheme which is simple, robust and readily parallisable. We apply this system to some illustrative test data, which shows that the algorithm works under reasonable conditions. We then consider its performance in a ground truth experiment which shows that the size-frequency (probability density) distributions estimated can not be distinguished from the ground truth distribution estimated and hand verified from the data.