Patent ID: 9268400
Filing Date: 2016-02-23
CPC Classification: G06F

Claim Text:
1. An apparatus for enabling a user to interact with movable control elements of a graphical user interface (GUI) by moving a hand in relation to an element of the GUI, or one or more fingers of said hand relative to a thumb on said hand, the apparatus comprising: a camera adapted to be releasably mounted to said hand, and a processor adapted to receive signals representative of successive images captured by the camera during movement of said hand, or of movement of a finger of said hand relative to said thumb, to analyse said successive images to determine said movement, and to communicate with the GUI to control elements thereof in accordance with the determined movement wherein the processor is adapted to divide the field of view of the camera into a plurality of sectors, at least two of which contain at least one high contrast area, to determine at least one vector relating to the movement of each high contrast area between successive images to determine sector movement vectors for at least two sectors, and to combine the sector movement vectors in order to determine movement of the camera in three translational dimensions and one rotational dimension, and wherein the processor is adapted to interpret the obscuring of a portion of one side of the field of view of the camera by a fingertip coming into contact with said thumb as a predetermined instruction to the GUI.