Method and electronic device for gesture-based key input

An electronic device for gesture-based key input, comprising:

• a camera;
• a display configured to display a virtual keyboard;
• and
• a controller configured to:
• when a typing mode selected from among a single-hand typing mode and a double-hand typing mode is entered, recognize a gesture for an input region on a 3-D space corresponding to the displayed virtual keyboard by analyzing an image obtained through the camera and obtain a key input based on the recognized gesture,
• when the single-hand typing mode is entered, obtain the key input by recognizing only gesture performed by a first hand from the image, and when the double-hand typing mode is entered, obtain the key input by recognizing a gesture performed by at least one of the first hand and a second hand from the image.

An electronic device for gesture-based key input, comprising:

• a camera;
• a display configured to display a virtual keyboard;
• and
• a controller configured to:
• control a display of the virtual keyboard according to a typing mode selected from among a single-hand typing mode and a double-hand typing mode,
• recognize a gesture for an input region on a 3-D space corresponding to the virtual keyboard by analyzing an image obtained through the camera, and
• obtain a key input based on the recognized gesture.

A method for gesture-based key input, comprising:

• displaying a virtual keyboard;
• setting an input region on a 3-D space, corresponding to the displayed virtual keyboard, according to a typing mode selected from among a single-hand typing mode and a double-hand typing mode;
• recognizing a gesture for the input region;
• and
• obtaining a key input based on the recognized gesture.

A method for gesture-based key input, comprising:

• displaying a virtual keyboard;
• when a typing mode selected from among a single-hand typing mode and a double-hand typing mode is entered, obtaining an image and recognizing a gesture for an input region on a 3-D space corresponding to the displayed virtual keyboard by analyzing the image;
• and
• obtaining a key input based on the recognized gesture,
• wherein recognizing the gesture comprises:
• when the single-hand typing mode is entered, recognizing only gesture performed by a first hand from the image, and
• when the double-hand typing mode is entered, recognizing a gesture performed by at least one of the first hand and a second hand from the image.

A method for gesture-based key input, comprising:

• displaying a virtual keyboard;
• controlling a display of the virtual keyboard according to a typing mode selected from among a single-hand typing mode and a double-hand typing mode;
• recognizing a gesture for an input region on a 3-D space corresponding to the virtual keyboard;
• and
• obtaining a key input based on the recognized gesture.