Z-axis determination in a 2d gesture system
AssigneeQUALCOMM Incorporated
InventorsFrancis Bernard MacDougall, Shaun William Van Dyken, Evan Robert Hildreth
Life of this patent
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Abstract
Systems, apparatus and methods for determining a gesture are presented. According to some aspects, disclosed are systems, apparatus and methods for determining a gesture that compares different images and deduces a direction and/or distance based on a relative size change of a palm in the different images. After a reference palm size is registered, subsequent palm sizes are compared to the reference to determine if and/or how much the hand is moving. The hand gesture is determined based on these relative changes in hand movement.
Claims23
A method in a mobile device for determining a gesture, the method comprising:
- capturing a first image containing a hand having a first size;
- computing a first indication of the first size of the hand in the first image;
- capturing a second image containing the hand having a second size;
- computing a second indication of the second size of the hand in the second image;
- computing a relative change between the first image and the second image;
- and
- determining the gesture based on the relative change.
A mobile device for determining a gesture, the mobile device comprising:
- a camera configured to:
- capture a first image containing a hand having a first size;
- and
- capture a second image containing the hand having a second size;
- and
- a processor coupled to the camera and comprising code to:
- compute a first indication of the first size of the hand in the first image;
- compute a second indication of the second size of the hand in the second image;
- compute a relative change between the first image and the second image;
- and
- determine the gesture based on the relative change.
A mobile device for determining a gesture, the mobile device comprising:
- means for capturing a first image containing a hand having a first size;
- means for computing a first indication of the first size of the hand in the first image;
- means for capturing a second image containing the hand having a second size;
- means for computing a second indication of the second size of the hand in the second image;
- means for computing a relative change between the first image and the second image;
- and
- means for determining the gesture based on computing the relative change.
A non-transient computer-readable storage medium including program code stored thereon, comprising program code to:
- capture a first image containing a hand having a first size;
- compute the first indication of the first size of the hand in the first image;
- capture a second image containing the hand having a second size;
- compute the second indication of the second size of the hand in the second image;
- compute a relative change between the first image and the second image;
- and
- determine the gesture based on computing the relative change.
Dependencies are inferred from the claim text.