View
215
Download
1
Category
Tags:
Preview:
Citation preview
1Electrical and Computer Engineering
Aura Ganz, James Schafer, Yang Tao,Carole Wilson, Meg Robertson & Laura Bozeman
Indoor Navigation for the Visually Impaired
2Electrical and Computer Engineering
PERCEPT Workshop Presentation Flow
• Introduction• What is PERCEPT?• Overview of PERCEPT Trials and Results• Why Smartphones?• PERCEPT Now and Future• Q & A
3Electrical and Computer Engineering
PERCEPT Background
• Provides Indoor Navigation Instructions to the Blind and Visually Impaired (Orientation Aid)
• User Friendly
• Technology used is affordable not only for user, but for businesses and public venue
• Customized Instructions
• Updated Navigation Instructions by scanning door tag
4Electrical and Computer Engineering
Design Guidelines
Guided by an orientation and mobility instructor from Mass Commission for the Blind• Percept does not replace mobility aids
currently used by the visually impaired (cane, dog)
• Percept is an orientation aid used in conjunction with mobility aids
• Enables users to independently navigate in unfamiliar areas
5Electrical and Computer Engineering
PERCEPT Workshop Presentation Flow
• Introduction
• What is PERCEPT?• Overview of PERCEPT Trials and Results• Why Smartphones?• PERCEPT Now and Future• Q & A
6Electrical and Computer Engineering
What is PERCEPT?
• Provides Indoor Navigation Instructions to the Blind and Visually Impaired (Orientation Aid)
• End-User– Simple scanning device that the user interacts
through touch• Indoor Environment – Contains tags that can be scanned by End-User
• Result of this scanning interaction– Navigation instructions provided to End-User from
where they are scanning to desired destination
7Electrical and Computer Engineering
Video Lucy Glove
• http://youtu.be/s23VVhGXnBw
8Electrical and Computer Engineering
Video PERCEPT Overview
• http://youtu.be/cmabcthLAUc
9Electrical and Computer Engineering
PERCEPT Workshop Presentation Flow
• Introduction• What is PERCEPT?
• Overview of PERCEPT Trials and Results
• Why Smartphones?• PERCEPT Now and Future• Q & A
10Electrical and Computer Engineering
Phase Two Trial Participants
Field Response Number of Responses
Gender Male 8Female 12
Age ( in years )
age < 20 220 <= age < 30 230 <= age < 40 240 <= age < 50 250 <= age < 60 960 <= age < 70 280 <= age < 90 1
Highest Education Level
GED 2High School 1Some College 6Undergraduate
Degree 9
Masters Degree 2
Field Response Number of Responses
Level of Blindness
Blind 9Partial Vision 11
Blind Since
BirthYes 5No 15
Navigation Aid
Cane 10Guide Dog 7No Mobility
Aid 3 Received O&M Training
Yes 19
No 1
11Electrical and Computer Engineering
Example of Trial Flow
PATH ID
SOURCE TO DESTINATION FLOOR
S1 Entrance to Elevator 1S2 Elevator to 312 3S3 312 to Elevator 3S4 Elevator to 302 3S5 302 to Elevator 3
S6Elevator to Emergency Exit 3
S7Emergency Exit to Elevator 3
S8 Elevator to Restroom 3S9 Restroom to Elevator 3S10 Elevator to Exit 1
Entrance
Elevator
Elevator
Room 312 Room 302
E-ExitRestroom
M or W
Floor 1
Floor 3
12Electrical and Computer Engineering
Video Excerpts from Percept Trials
13Electrical and Computer Engineering
Summary of Qualitative Results
Qualitative Assessment % that Agree
Like Percept 100%
PERCEPT would benefit them 85%
PERCEPT enables independence
85%
PERCEPT is Intuitive 90%
Receiving updated directions from any door to be very beneficial
100%
14Electrical and Computer Engineering
Feedback: Improvements Requested by Participants• Directions need to include proximity or given in
feet/steps 75%• Dog users – change instructions for dogs (86%)• Use smartphone – 30%• User preferences-– Adjust voice pace – 60%– Brief directions just mention left/right/……
(15%)• More discrete design than glove– Blend in with general public
15Electrical and Computer Engineering
PERCEPT Workshop Presentation Flow
• Introduction• What is PERCEPT?• Overview of PERCEPT Trials and Results
• Why Smartphones?• PERCEPT Now and Future• Q & A
16Electrical and Computer Engineering
Why Smartphones?
17Electrical and Computer Engineering
Why Smartphones?
18Electrical and Computer Engineering
Smartphone in the Blind and Visually Impaired Community• Smartphones and Tablets are a trending technology being
used by the Blind & Visually Impaired• These devices provide many services:
– Currency Reader– Object Identifier– Color Identifier– Audible Books– OCR (Capture text with camera and read out loud)– Accessible Web Browsing, Email, & Phone– And much more!
• Expensive customized devices are now being replaced by an affordable App
19Electrical and Computer Engineering
PERCEPT Smartphone Video
• http://youtu.be/iiWjvzpsbRg
20Electrical and Computer Engineering
Example of How PERCEPT App Uses Gestures
21Electrical and Computer Engineering
PERCEPT Workshop Presentation Flow
• Introduction• What is PERCEPT?• Overview of PERCEPT Trials and Results• Why Smartphones?
• PERCEPT Now and Future• Q & A
22Electrical and Computer Engineering
PERCEPT Now
• Applied for several grants and funding opportunities to further progress the system
• PERCEPT Pilot Deployment in MBTA
• PERCEPT Pilot in UMASS Administrative Building
23Electrical and Computer Engineering
PERCEPT Workshop Presentation Flow
• Introduction• What is PERCEPT?• Overview of PERCEPT Trials and Results• Why Smartphones?• PERCEPT Now and Future
• Q & A
24Electrical and Computer Engineering
Thank You
• Questions
Recommended