1. A method comprising: receiving third image data captured from a camera of a control device; a first portion of the third image data representing an image of a first display displaying images frame by frame generated from first image data including at least one frame, wherein a resolution of said first image data is A×B units and a resolution of the third image data is W×H units; locating the first portion of the third image data; determining a position (p, q) in the third image data representing a center of the first portion of the third image data in the third image data; determining a center of a first portion in a frame in the first image data as (a, b), wherein a=(A/W)*p and b=(B/H)*q; and generating second image data from the first image data corresponding to the first portion in a frame in the first image data; and providing the second image data to the control device for display as a second image on a second display.