Point symmetry of convex digital regions

The authors define point symmetry for convex digital regions. They restrict their attention to convex digital regions that are N-connected. An efficient algorithm is presented to determine the points of symmetry of such regions by eliminating portions of a feasible region. If a convex digital region is not N-connected, the main result still applies and algorithm can still be used after modifications. However, point symmetry for convex digital regions that are not N-connected may not be meaningful