NEWS

I'm currently looking for a tenure-track assistant professor position.

[April 15th, 2018] Our paper "Occupant Localization using Footstep-Induced Structural Vibration" is accepted by MSSP 2018.
[Dec 15th, 2017] Our paper "UniverSense: IoT Device Pairing Using Heterogeneous Sensing Signals" is accepted by HotMobile 2018.
[Dec 15th, 2017] Our paper "VVRRM: Vehicular Vibration-based Heart RR-Interval Monitoring System" is accepted by HotMobile 2018.
[Nov 9th, 2017] Our paper "SenseTribute: Smart Home Occupant Identification via Fusion Across On-Object Sensing Devices" got the Audience Choice Award at BuildSys 2017.
[Nov 8th, 2017] My presentation "Structure as Sensors: Learning Indoor Human Information from Physical Vibrations" got the Best Presentation Award at the Doctoral Colloquium of SenSys 2017.

Research Areas

Indoor Localization

Indoor localization provides location information of people/devices. This information enables various smart building applications, e.g., navigation, personalization.

Vision-based Mobile Sensing

Most of the mobile phones are equipped with cameras. Vision-based sensing on mobile phones can extend the sensing ability of the phones.

Objects as Sensors

Human interact with their physical surroundings all the time. By monitor the vibration response of the physical objects, we can infer the information of the interaction.

Objects as Sensors

Infer human-object interaction through strutural vibration

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Occupant Identification and Tracking using Footstep-Induced Floor Vibration

Many smart building applications need non-intrusive monitoring of their occupants. We present a structural vibration based sensing system to achieve this purpose. We focus on pedestrian spatio-temporal information obtaining including identity (paper), location (paper), traffic (paper), health condition (paper), etc.

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Surface Vibration Sensing: Turn Everyday Objects into Touchscreens

People touch objects in the physical surroundings all the time. Touch interaction induces surface of the objects vibrate. By detecting this vibration at multiple locations, the system can localize and track interaction points, including tapping and swipping, hence turn the monitored surface into touch screen (paper).

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Vision-based Mobile Sensing

Infer user/device information using camera on mobile phone.

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Polaris/Headio

Mobile device orientation obtaining utilizing ceiling pattern captured by front facing cameras.

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Securitas

Ubiquitous mobile identification through hand geometry utilizing a NIR-RGB camera.

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iCEnergy

A vision-based mobile information interface that provides power monitoring using augmented reality.

Indoor Localization

Obtain person/device location in an indoor environment.

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SensorFly

RF-based mapping and navigation for small-scale quadcopter swarms.

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PANDAA

Acoustic-based devices and sound sources simultaneous localization.

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vLoc

Indoor tracking using Wi-Fi and inertial sensors on mobile phones.

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Nataero

Large amount and long period indoor assets tracking using BLE.