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Velocity field interaction for free space gesture interface and control

  • US 10,635,185 B2
  • Filed: 09/13/2019
  • Issued: 04/28/2020
  • Est. Priority Date: 10/16/2013
  • Status: Active Grant
First Claim
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1. A method of automatically interpreting a gesture of a control object, in a three-dimensional (3D) sensor space using a 3D sensor, as a first gesture or a second gesture, the method including:

  • determining that the gesture is the first gesture when a direction of a sensed trajectory of a sensed movement of the control object is within a pre-determined range of a normal vector that is normal to a defined control plane that remains tangent to a surface of the control object throughout a sensed movement of the control object in any direction in the 3D sensor space, the control plane being defined by an orientation of the control object as sensed by a video camera, whereby the direction of the movement of the trajectory of the control object is more normal to a surface of the control plane than parallel to the surface of the control plane; and

    determining that the gesture is the second gesture when the direction of the trajectory of the movement of the control object is parallel to the surface of the control plane, within a pre-determined range, whereby the direction of the movement of the trajectory of the control object is more parallel to the surface of the control plane than normal to the surface of the control plane.

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