Exercise 3 Second moments can be used to evaluate how longish or how circular the shape of a binary object is. This has been used, for example, to evaluate blood samples

in microscopy images for sickle cell disease. (a) Write down the relevant mathematical expression as a function of the second moments of the binary image B(x,y). (b) is the expression larger or smaller for sickle cells compared to healthy blood cells? (c) Propose another computer vision problem where object circularity is a property that could aid in image interpretation.