Step one is to pick up the control point set which determines the geometric position of images, and then to derive a geometric transform for registering one image to another from those points.

To optimize the management of access control, an IT organization might have a policy enforcement point or set of enforcement points.

Tsonga came close to breaking Nadal at 4-4 in the second set. But one forehand and one backhand error, from 15/30, when in total control of the point, cost Tsonga the opportunity.