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WiDeo: A Motion Tracing Camera using WiFi Signals


Stanford Reference:

14-059


Abstract


Researchers in Prof. Sachin Katti’s laboratory have designed and implemented WiDeo, a motion tracing camera using WiFi signals as the light source. This novel system enables accurate, high resolution, device-free human motion tracing in indoor environments using WiFi signals and compact WiFi radios. It can track fine grained motion of humans through walls and other objects without the need for any wearable device on the human body. WiDeo has been prototyped using off-the-shelf software radios. Studies show that it accurately traces motion even when there are multiple independent human motions occurring concurrently (up to 4) with a median error in the traced path of less than 12cm. WiDeo has broad applications such as security, navigation, search and rescue, and people monitoring.

Figure

Figure description - WiDeo in operation: The compact WiFi AP in the study integrates WiDeo’s motion tracing functionality, and can reconstruct the hand movement made by humans in the living room. WiDeo traces motion even though the AP is separated by a wall and does not have a LOS path to the humans, and doesn’t require that the humans have any RF devices on them.

Stage of Research
  • Experimental prototype tested
  • Building practical prototype to demonstrate capabilities in real time


  • Applications


    • Security
    • Navigation
    • Search and rescue operations
    • Gesture recognition
    • Elderly and child monitoring

    Advantages


    • Accurate
    • High resolution
    • Penetrates walls and other objects as RF signal penetrates most materials used for partition in office or home.
    • No wearable device on body required - The system can track fine grained motion of human without the need for any wearable device on the body.

    Publications



    Related Web Links



    Innovators & Portfolio



    Date Released

     9/1/2015
     

    Licensing Contact


    Evan Elder, Licensing Associate
    650-725-9558 (Mobile)
    Request Info

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