The document describes a new type of "medical mirror" interface that can measure a user's heart rate without external sensors. It works by using a webcam and software to analyze subtle light intensity changes in a user's face as their blood pulses, visible through ambient light. When a user looks at their reflection in the mirror, a box appears around their face and their continuously updating heart rate is displayed. This novel interface aims to conveniently allow users to track their daily health with minimal effort by blending physiological monitoring into everyday mirror use.

1. MEDICAL MIRROR
Presented by
Mounica.J
14204127

2. CONTENTS
 Introduction
 Design
 Working
 Demonstration
 Interaction
 Advantages
 Conclusion
 References

3. INTRODUCTION
 Digital medical devices promise to transform the future of
medicine because of their ability to produce exquisitely detailed
individual philosological data.
 Current techniques for physiological monitoring typically
require users to starp on bulky sensors, chest straps or stickly
electrodes.
 A new mirror interface for real-time,contact-free measurements
of heart rate with out the need for external sensors so called as
magical mirror. It is used to provide a natural user interface.

4. DESIGN
 An LCD monitor with a built-in webcam is used to provide an
interface display.
 A two way mirror was fitted on to the frame to present a
reflective surface for the users in normal lighting conditions.
 The user is visible to the web cam and the LCD monitor can be
used to project information on to the surface of the mirror .
 The monitor and webcam are connected to a laptop running
the analysis software in real-time.

6. HOW DOES THIS TECHNOLOGY WORKS??
 It uses light to measure the information from our body.
 Every time your heart beats, the blood in your vessels
increase slighty.
 Blood absorbs light and so this increase absorbs more
mono light, decreasing the amount of light being
transmitted or reflected by our body.
 In this case we’re just using the ambient light around
you:sunlight, roomlight or any thing that’s illuminating
your environment.
 The camera then measures the mono light being reflected
off you, in this case, your face.

7. DEMONSTRATION OF TECHNOLOGY

8. WORKING
 An automated face tracker detects the largest face with in the
video feed from the webcam and locoliges the measurement
region of intrest (ROI) for each video frame.
 It uses light to measure the information from your body.
 The raw RGB signals are decomposed into three independent
components using independent component analysis.
 The power spectrum of the component containg the strongest
blood volume pulse signal is then computed.
 The user’s heart rate is identified as the frequency that
corresponds to the highest power of the spectrum with in a
operational frequency band(45-240bpm).

9. DEMONSTRATION OF MEDICAL MIRROR WORKING

10. INTERACTION
 A single user will be able to interact with the mirror at a time.
 When looking in to the mirror , the user will see a box appear
around his/her face and a timer will be displayed on the top
corner of the box.
 User’s will be asked to stay relatively as the timer counts
down.
 User’s heart rate will be displayed on the mirror, allowing
simultaneously visualization of his/her physical appearance
and physiological state.
 The heart rate measurement will be updated continuosly until
the user looks away.

11. ADVANTAGES
 The medical mirror fits seamlessy into the ambient home
environment.
 Blending the data collection process into the course of our
daily routines.
 This interface is intended to provide a convenient means for
people to track their daily health with minimal effort.
 You could also use it on a phone or laptop or any device
that has a camera.

12. CONCLUSION
 This project illustrates an innovative approach to pervasive
health monitoring based on state of the art technology.
 The Medical Mirror fits seamlessly into the ambient home
environment, blending the data collection process into the
course of our daily routines.
 This interface is intended to provide a convenient means for
people to track their daily health with minimal effort.

13. REFERENCES
 POH, M.-Z., MCDUFF, D.J. AND PICARD, R.W. 2010. Non-contact, Automated
Cardiac Pulse Measurements Using Video Imaging and Blind Source Separation.
Optics Express, vol. 18, no. 10, 10762-10774.
 S. Cook, M. Togni, M. C. Schaub, P. Wenaweser, and O. M. Hess, "High heart rate:
a cardiovascular risk factor?" Eur. Heart J. 27 (20), 2387-2393 (2006).
 I. Pavlidis, J. Dowdall, N. Sun, C. Puri, J. Fei, and M. Garbey, "Interacting with
human physiology," Comput. Vis. Image Underst. 108 (1-2), 150-170 (2007).
 M. Garbey, N. Sun, A. Merla, and I. Pavlidis, "Contact-free measurement of cardiac
pulse based on the analysis of thermal imagery," IEEE Trans. Biomed. Eng. 54 (8),
1418-1426 (2007).