Patent ID: 8490013

Claim:
A method comprising: identifying, using at least one processor, an origin on a display device; detecting, using the at least one processor, a gesture on the display device at a first location; determining, using the at least one processor, a first distance from the origin to the first location; tracking, using the at least one processor, movement of the gesture from the first location to a second location; determining, using the at least one processor, a second distance from the origin to the second location; and determining, using the at least one processor, an action associated with the gesture based on the movement of the gesture and a comparison of the first and second distances; wherein: the gesture defines a circular area centered at the origin; and the action comprises: reducing an image displayed on the display device when the movement of the gesture defines an increasing circular area; and magnifying the image displayed on the display device when the movement of the gesture defines a decreasing circular area.