Radar-based gesture recognition
First Claim
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1. A computer-implemented method comprising:
- providing, through a radar-based gesture-recognition system, a radar field;
sensing, through the radar-based gesture-recognition system, one or more initial interactions by an actor in the radar field, the actor being one of a particular human finger, hand, or arm;
determining, based on the one or more initial interactions in the radar field, an identifying factor, the identifying factor including a height, weight, skeletal structure, facial shape, or hair of the actor;
associating the identifying factor with an identity, the identity identifying the actor; and
storing the identity of the actor with the identifying factor for the actor, the identifying factor enabling identification of an unknown actor through comparison of a second identifying factor with the identifying factor, the second identifying factor sensed by the radar-based gesture-recognition system or another radar-based gesture-recognition system, the identifying factor and the second identifying factor being equivalent features of the actor and the unknown actor.
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Abstract
This document describes techniques using, and devices embodying, radar-based gesture recognition. These techniques and devices can enable a great breadth of gestures and uses for those gestures, such as gestures to use, control, and interact with computing and non-computing devices, from software applications to refrigerators. The techniques and devices are capable of providing a radar field that can sense gestures from multiple actors at one time and through obstructions, thereby improving gesture breadth and accuracy over many conventional techniques.
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Citations
20 Claims
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1. A computer-implemented method comprising:
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providing, through a radar-based gesture-recognition system, a radar field; sensing, through the radar-based gesture-recognition system, one or more initial interactions by an actor in the radar field, the actor being one of a particular human finger, hand, or arm; determining, based on the one or more initial interactions in the radar field, an identifying factor, the identifying factor including a height, weight, skeletal structure, facial shape, or hair of the actor; associating the identifying factor with an identity, the identity identifying the actor; and storing the identity of the actor with the identifying factor for the actor, the identifying factor enabling identification of an unknown actor through comparison of a second identifying factor with the identifying factor, the second identifying factor sensed by the radar-based gesture-recognition system or another radar-based gesture-recognition system, the identifying factor and the second identifying factor being equivalent features of the actor and the unknown actor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 18, 19, 20)
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12. A radar-based gesture-recognition system comprising:
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a radar-emitting element configured to provide a radar field, the radar field configured to penetrate fabric and reflect from human tissue; an antenna element configured to receive reflections from multiple human tissue targets including hands, arms, legs, head, or body from a same or different person within the radar field; and a signal processor configured to; process the received reflections from the multiple human tissue targets within the radar field sufficient to differentiate the multiple human tissue targets from one another; determine, based on the received reflections, an identifying factor, the identifying factor including a height, weight, skeletal structure, facial shape or hair of a first human tissue target of the multiple human tissue targets; associate the identifying factor with an identity of the first human tissue target of the multiple human tissue targets; store the identity and the identifying factor of the first human tissue target of the multiple human tissue targets, the identifying factor enabling identification of a second human tissue target of the multiple human tissue targets through comparison of the first human tissue target identifying factor with a second identifying factor associated with the second human tissue target, the identifying factor and the second identifying factor being equivalent features of the first human tissue target and the second human tissue target; and provide gesture data usable to determine a gesture from the first human tissue target of the multiple human tissue targets. - View Dependent Claims (13, 14, 15, 16)
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17. An apparatus comprising:
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a radar-based gesture-recognition system comprising; a radar-emitting element configured to provide a radar field, the radar field configured to penetrate fabric and reflect from human tissue targets including hands, arms, legs, head, or body of a person; an antenna element configured to receive reflections from the human tissue targets that are within the radar field; and a signal processor configured to process the received reflections from the human tissue targets within the radar field to provide data associated with the received reflections; one or more computer processors; and one or more non-transitory computer-readable storage media having instructions stored thereon that, responsive to execution by the one or more computer processors, perform operations comprising; causing the radar-based gesture-recognition system to provide a radar field with the radar-emitting element; causing the radar-based gesture-recognition system to receive first reflections for a first interaction in the radar field with the antenna element such as a hand, arm, leg or body movement, the first interaction including an actor interacting with the radar field, the actor being one of a particular human finger, hand, arm, head or leg; causing the signal processor to process the first received reflections to provide data for the first interaction; determining, based on the provided data for the first interaction, an identifying factor, the identifying factor including a height, skeletal structure, facial shape, or hair of the actor causing the first interaction; associating the identifying factor with an identity, the identity identifying the actor; and storing the identity of the actor and the identifying factor, the identifying factor enabling identification of an unknown actor through comparison of a second identifying factor with the identifying factor, the second identifying factor sensed by the radar-based gesture-recognition system or another radar-based gesture-recognition system, the identifying factor and the second identifying factor being equivalent features of the actor and the unknown actor.
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Specification