A mobile terminal 200 generating a control command using a marker attached to a finger includes a camera 210 configured to receive a target image including a finger region, a fingertip region detection module 220 configured to detect a finger region in the target image using an image processing technique, and a fingertip region in the finger region, a marker region detection module 230 configured to detect a color marker region attached to the finger in the target image using a color detection technique, a control module 240 configured to operate the fingertip region detection module or the marker region detection module, based on an input from a user, and a coordinate calculation module 250 configured to calculate three-dimensional coordinate values using the fingertip region or the color marker region.