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RF-based micro-motion tracking for gesture tracking and recognition

A micro-motion and gesture technology, applied in the input/output of user/computer interaction, utilization of re-radiation, reflection/re-radiation of radio waves, etc., can solve problems such as resolution constraints of radar tracking systems

Active Publication Date: 2020-03-03
GOOGLE LLC +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These radar tracking systems have difficulty determining small gesture movements without a large, complex, or expensive radar system because the resolution of the radar tracking system is constrained by the hardware of the radar system

Method used

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  • RF-based micro-motion tracking for gesture tracking and recognition
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Embodiment Construction

[0018] Overview

[0019] This paper describes techniques for implementing RF-based micromotion tracking. The technique tracks millimeter-scale hand movements from radar signals, even from conventional resolution radar systems with coarser hardware constraints than the tracked millimeter-scale resolution.

[0020] The gesturing hand is a complex non-rigid target with multiple dynamic components. Because of this, the range and speed of hand sub-components such as the fingertip, palm, or thumb are often sub-resolution limitations of conventional hardware. Therefore, conventional hardware must be large, expensive or complex in order to track small movements. Even for those conventional hardware capable of tracking small movements, tracking algorithms are computationally limited for real-time gesture recognition applications.

[0021] consider figure 1 The hardware-constrained resolution of the conventional system shown. Here, the hardware-constrained spatial resolution 102...

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Abstract

This paper describes techniques for radio frequency (RF) based micro-motion tracking. These techniques allow even millimeter-scale hand movements to be tracked. To do this, radar signals from radar systems are used which, with conventional techniques, only allow a resolution of centimeters or more.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS [0002] This application requires US Provisional Application Serial No. 62 / 155,357, filed on April 30, 2015, and US Provisional Application Serial No. 62 / , filed on May 28, 2015, pursuant to 35 U.S.C. §119(e). 167,823 priority, the disclosures of the aforementioned applications are hereby incorporated by reference in their entirety. Background technique [0003] Small screen computing devices continue to grow, such as smartphones, computing wristbands, rings and watches. Like many computing devices, these small screen devices often use virtual keyboards to interact with users. However, on some small screens, many people find it difficult to interact via virtual keyboards, as they often result in slow and inaccurate input. This is cumbersome for users and limits the applicability of small screen computing devices. [0004] To address this problem, optical finger and hand tracking technology has been developed, which enables th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F3/01G01S13/58G01S13/66G01S13/88G01S7/41G01S13/89
CPCG01S7/415G01S13/58G01S13/66G01S13/88G01S13/89G06F3/011G06F3/017
Inventor 连寄楣埃里克·M·奥尔森帕特里克·M·阿米胡德伊万·波派列夫
Owner GOOGLE LLC