Method for providing user commands to an electronic processor and related processor program and electronic circuit

A method for providing user commands to an electronic processor, wherein a first user command corresponds to a pressure of a first predetermined button of a “mouse” and a second user command corresponds to the release of said first predetermined button, the method comprising the following steps in sequence,

• A) identifying a hand of said person with an image detection device in communication with the electronic processor, wherein the image detection device is configured to detect a sequence of images of said hand using the electronic processor;
• B) detecting movement of said hand corresponding to pinching of a pad of a thumb of said hand and of a pad of a first predetermined other finger of said hand from said sequence of images, said detection including identifying and tracking the thumb and the first predetermined other finger, said detection of the pinching movement further including a comparison of a decreasing distance between the pad of the thumb and the pad of the first predetermined other finger with a pinch threshold distance at subsequent instants;
• C) generating said first user command and sending said first command to said electronic processor;
• D) detecting movement of said hand corresponding to spreading of the pad of the thumb of said hand and of the pad of said first predetermined other finger of said hand from said sequence of images, said detection of the spreading movement further including a comparison of an increasing distance between the pad of the thumb and the pad of the first predetermined other finger with a spread threshold distance at subsequent instants;
• E) generating said second user command and sending said second user command to said electronic processor.