1. A touch gesture recognition apparatus comprising: a gesture recognizing unit configured to detect a touch thereon, to create a bounding box surrounding a location where the touch occurs, to determine a calculated distance to be a length of the diagonal line of the bounding box, to recognize a gesture as a single-touch gesture or a multi-touch gesture by comparing the determined length of the diagonal line of the bounding box with a range of a threshold diagonal-line length, and to distinguish between the single-touch gesture and the multi-touch gesture touched consecutively using touch signals collected for a predetermined time period; and an input event processing unit configured to map the recognized gesture to a user input event.