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Development of Web-based
Platform for Privacy Protective
Avatar Mediated Distant-Care
YU KOBAYASHI, DAI HASEGAWA, SHINICHI...
Social Requirements for the Elderly
 Difficult to notice the change of
elderly’s health status
 Urgent:
Falling down, He...
Distributed ICT Care Services
 Current status
 Simple and Low-tech
(e.g. Emergency call services with push button device...
Privacy
 The person’s right to control personal information revealed to
others
 Should be opt-in (especially in Europe)
...
Observation Methods
 Camera-based observations are often applied
 No effective solutions to protect one’s privacy in cap...
Purpose
 Propose a platform for distant-care system
 Sensor-based observation (motion capturing with Kinect)
 observe t...
System Overview
PC
Server Multi Devices
Sender Program
Acquire Data
Process Data
WebSocket Server
Web Browser
Render
with ...
Avatar Animation 8
 OpenGL, OpenGL ES, DirectX
 Need to develop
for each device or OS
 Installing application needs
use...
Client-Server Communication
 HTTP Protocol
 A traditional communication protocol between a server and a web browser
 Ca...
Sensor Integration
 Various types of wearable sensors have been developed
(e.g. blood pressure, heartbeat-rate, oxygen le...
Example of Sensor Integration
Temperature / Humidity
Sensor Module
Heartbeat-rate
Sensor Module
Arduino Uno
Raspberry Pi
W...
Example 12
Required Bandwidth Test
 Data amount (15 FPS)
 Articular angles: 6 Kbytes (JSON)
 Sensors: 50 Bytes (JSON)
 Measure th...
Result of Required Bandwidth Test
 Above 800Kbit/s :
the animation was rendered smoothly
without delay
 Below 800Kbit/s ...
Conclusion and Future Works
 Conclusion
 We proposed a web-based platform for privacy-protected avatar mediated distant-...
Acknowledgement
This research was partially supported by “Strategic Information and
Communications R&D Promotion Programme...
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Privacy-protective distant-care

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Development of Web-based Platform for Privacy Protective Avatar Mediated Distance-Care
MindCare2015@Milan

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Privacy-protective distant-care

  1. 1. Development of Web-based Platform for Privacy Protective Avatar Mediated Distant-Care YU KOBAYASHI, DAI HASEGAWA, SHINICHI SHIRAKAWA, HIROSHI SAKUTA, EIJUN NAKAYAMA AOYAMA GAKUIN UNIVERSITY, JAPAN 1
  2. 2. Social Requirements for the Elderly  Difficult to notice the change of elderly’s health status  Urgent: Falling down, Heart attack, …  Long-Term Change: Blood pressure, Posture, …  Needs of daily support and watching over for elderly  Used to be supported by family members and/or local community  Supporting business by human workers  Increase of social welfare expense 2 0 2000 4000 6000 8000 10000 1980 1985 1990 1995 2000 2005 2010 2015 2020 2025 2030 2035 Year The number of households in which elderly who lives alone in Japan* Male Female *Cabinet Office, Government of Japan, ”Annual Report on the Aging Society”, 2015
  3. 3. Distributed ICT Care Services  Current status  Simple and Low-tech (e.g. Emergency call services with push button devices)  Advanced ICT devices are not widely used (e.g. cameras, sensors, …)  Trade-off problem of convenience in care services and privacy invasion for Elderly and family members 3
  4. 4. Privacy  The person’s right to control personal information revealed to others  Should be opt-in (especially in Europe)  Opt-in policy  Permission-based  Of a selection, the property of having to choose explicitly to join or permit something 4
  5. 5. Observation Methods  Camera-based observations are often applied  No effective solutions to protect one’s privacy in capturing video (e.g. Filtering and automatic blurring cannot conceal one’s nudity)  Capturing video is not suited for opt-in (Difficult to filter the information)  Sensor-based observations  No video capturing  Only collects the information which is permitted to be seen by the elderly (Suited for opt-in)  Difficult to understand the meanings of the value of sensor data  Observe an avatar  Only collects the articular angle data by motion-capturing system (Kinect)  Observe an elderly as an avatar which is rendered by sensor data  Can be recognized elderly’s behavior 5
  6. 6. Purpose  Propose a platform for distant-care system  Sensor-based observation (motion capturing with Kinect)  observe the avatar of an elderly  Advantages  Privacy protective  No video capturing required  Suited for both opt-in and opt-out  Real-time and remote accessible via Internet 6
  7. 7. System Overview PC Server Multi Devices Sender Program Acquire Data Process Data WebSocket Server Web Browser Render with WebGL Kinect, Optional Sensors HTTP WebSocket Browse HTTP Server Rendering Program Avatar Model WebSocket Articular Angle Articular Angle Avatar Model Renderer 7 Caregiver SideServer SideElderly Side
  8. 8. Avatar Animation 8  OpenGL, OpenGL ES, DirectX  Need to develop for each device or OS  Installing application needs user’s operation  Difficult to support  WebGL  A JavaScript API  Runs on modern browsers  PCs and Mobiles
  9. 9. Client-Server Communication  HTTP Protocol  A traditional communication protocol between a server and a web browser  Cannot send the data to web browser actively  Every request / response needs a relatively large amount of HTTP header (high-load)  WebSocket Protocol  Real-time, two-way  Only one HTTP header is needed (low-load)  Supported in almost all modern web browsers 9
  10. 10. Sensor Integration  Various types of wearable sensors have been developed (e.g. blood pressure, heartbeat-rate, oxygen level) 10 Apple Watch Samsung Galaxy Gear
  11. 11. Example of Sensor Integration Temperature / Humidity Sensor Module Heartbeat-rate Sensor Module Arduino Uno Raspberry Pi Wi-Fi Adapter Battery 11 { “temperature”: 25, “humidity”: 65, “heartbeat-rate”: 80 }
  12. 12. Example 12
  13. 13. Required Bandwidth Test  Data amount (15 FPS)  Articular angles: 6 Kbytes (JSON)  Sensors: 50 Bytes (JSON)  Measure the performance 10 seconds after communication was established  Indexes  The average frame-rate  The average time lapse after the server sent the data (latency) 13
  14. 14. Result of Required Bandwidth Test  Above 800Kbit/s : the animation was rendered smoothly without delay  Below 800Kbit/s : the delay was accumulated with each passing moment (e.g. 350Kbit/s, 6FPS, 11s latency)  The animation of the avatar rendered without delay via mobile network. 14 [CELLRANGE] [CELLRANGE][CELLRANGE] [CELLRANGE] [CELLRANGE] [CELLRANGE] [CELLRANGE] 0 2000 4000 6000 8000 10000 12000 200 400 600 800 1000 1200 1400 Latency(ms) Bandwidth (Kbit/s) 3G Mobile Network
  15. 15. Conclusion and Future Works  Conclusion  We proposed a web-based platform for privacy-protected avatar mediated distant-care.  We measured the bandwidth required for avatar animation without delay.  Future Works  We will evaluate the system’s …  Usability  Psychological burden  Additional Research  Reveal how to detect any other particular health problems.  Test demonstration at a nursing home for elderly. 15
  16. 16. Acknowledgement This research was partially supported by “Strategic Information and Communications R&D Promotion Programme” (SCOPE) . 16

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