Non-contact Breathing Activity Monitoring Shane Transue and Min-Hyung Choi University of Colorado Denver - Comcast Center Department of Computer Science and Engineering

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Current Focus: Respiratory Monitoring Infants + Young Children Abnormal breathing | Asthma | Pediatric obstructive sleep apnea 1.) important, large number of people 2.) Detection hard => treatment hard 3.) Parents assume a good night sleep 4.) Difficult to constantly monitor

1.) Example of obstructed breathing 2.) to the point where he cannot breathe 3.) not only a hard time breathing => sleep quality

Polysomnography is invasive, cumbersome 1.) state of the art wired solutions 2.) sensors that monitor: muscle movements respiration eye movements heart rate

(CPAP) / Spirometer devices 1.) modifies natural behavior 2.) how can we identify abnormal behaviors?

What is the solution? 1.) remove wires 2.) allow natural breathing

Non-contact Monitoring What is the solution? Wire-Free Non-contact Monitoring

Non-contact Respiratory Monitoring Inhale Exhale Difference 1.) first step => tidal volume 2.) volumetric model – represents chest movements 3.) difference in inhale-exhale states => tidal volume

1.) me using the system for real-time tidal volume monitoring 2.) effective for tidal volume 3.) other factor such as obstruction 4.) Next step => exhale

Making Invisible - Visible 1.) standard thermal imaging 2.) rapid dissipation 3.) ineffective for exhale visualization 4.) Teamed up with FLIR

Making Invisible - Visible 1.) Detect CO2 molecule …. based on wavelength … 2.) Both nose and mouth

1.) Normal breathing behaviors 2.) Long term study especially for children

3D Density Models 1.) (not only) Tidal volume 2.) C02 concentration 3.) Lung efficiency & obstructed breathing

Challenges Movement? 1.) head turning - posture 2.) Camera position / orientation

1.) Body movement 2.) Redirect camera

Challenges What about blankets? To position the camera at the optimal position and orientation, we need to analyze the entire body posture. But we can reasonably expect that they are under the blanket, partially or pretty much entirely except the front face area.

Solution: 3D Thermal Imaging Thermal Surface Thermal Volume 3D Posture 3D Image

Research Partners | Funding Collaboration between National Science Foundation