@Author: Ali Hashmi
An analysis performed for a team studying opto/acousto-microfluidics. The experimenters were interested in detecting and following defects emerging in the local crystaline order over time.
Strategy : The image is first segmented to get the centres of the beads and any discrepancies are manually corrected. The centres are used to generate a Delaunay Mesh. The adjoining neighbours of all the cells are determined from the mesh. The angles subtended between a cell and its neighbours - with respect to a reference axis - yield the bond orientational order. The orientational order is the colormap to the Voronoi Mesh.
Below is one such analysis:
