SYSTEM AND METHOD OF REAL-TIME INTERACTIVE OPERATION OF USER INTERFACE

A method, a system, and a non-transitory computer readable medium are disclosed for real-time interaction with a user interface recognizing a gesture. The method including capturing three-dimensional (3D) data on a subject; detecting a pointing action by the subject from the 3D data; computing an initial estimate of a target region from the pointing action, the initial estimate of the target region having a defined radius around a center point; and tracking the pointing action of the subject and performing a series of iterations wherein the defined radius of the target region changes based on the detected pointing action.