Effective Use of Nutrition Labels
on Smartphones
Vladimir Kulyukin Tanwir Zaman Sarat Kiran Andhavarapu
Department of Comp...
Introduction
●
Many products sold worldwide have nutrition labels
(NLs)
●
In the U.S., the display of nutrition informatio...
Two Great Books
vkedco.blogspot.com
Outline
●
Background
● NutriGlass: A System for Effective Nutrition Label Use on
Smartphones
● NutriMenuNXT: Moving Calori...
Background
vkedco.blogspot.com
Barriers to NL Comprehension
●
Recent investigations of NL use by consumers have
used digital cameras to track consumers' ...
Confusing NL Examples
vkedco.blogspot.com
Confusing NL Examples
vkedco.blogspot.com
Recommendations from NL Use Literature
1) Central positions of NLs
2) Nutrients sorted by health relevance
3) Explanation ...
NutriGlass: A System for Effective
Nutrition Label Use on Smartphones
vkedco.blogspot.com
Four Targeted Recommendations
●
NutriGlass satisfies four out of six recommendations:
1) Central positions of NLs
3) Expla...
Implementation Details
●
The system's front end is implemented as an Android
smartphone application
●
The back end is curr...
Implementation Details
●
The front end application sends captured frames to
the back end wirelessly
●
The back end cluster...
Sample Screenshots
vkedco.blogspot.com
Demos
Online demo videos:
- lab video
- supermarket video
vkedco.blogspot.com
Hardware Details
●
A Linux cluster was built out of four Dell computers
●
Each node computer has an Intel Core i5-6503.2 G...
Software Details
●
Ubuntu 12.04 LTS was installed on each machine
●
JBoss was used to build and configure the cluster
●
JB...
NutriGlass 1.0 on Google Play
The free front end application is available on Google Play;
search “NutriGlass on Google Pla...
NutriMenuNXT: Moving
Caloric Awareness into Fast
Food Chains
vkedco.blogspot.com
NutriMenuNXT
NutriMenuNXT is an Android application that allows the
user to get nutritional information on menu items from...
NutriMenuNXT
vkedco.blogspot.com
Conclusions
vkedco.blogspot.com
Back to Four Targeted Recommendations
●
NutriGlass & NutriMenu satisfy four out of six
recommendations found in the litera...
Food Policy Implications
●
The current NL design on product packages does not
have to change physically to make NL use mor...
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Effective Use of Nutrition Labels on Smartphones

  1. 1. Effective Use of Nutrition Labels on Smartphones Vladimir Kulyukin Tanwir Zaman Sarat Kiran Andhavarapu Department of Computer Science Utah State University Logan, UT, USA vkedco.blogspot.com
  2. 2. Introduction ● Many products sold worldwide have nutrition labels (NLs) ● In the U.S., the display of nutrition information is mandated by the Nutrition Education and Labeling Act (NLEA) of 1990 ● EU FLABEL is a similar legislative act in EU ● Even highly motivated consumers find it difficult to locate and comprehend nutrition information on many products vkedco.blogspot.com
  3. 3. Two Great Books vkedco.blogspot.com
  4. 4. Outline ● Background ● NutriGlass: A System for Effective Nutrition Label Use on Smartphones ● NutriMenuNXT: Moving Caloric Awareness into Fast Food Chains ● Conclusions vkedco.blogspot.com
  5. 5. Background vkedco.blogspot.com
  6. 6. Barriers to NL Comprehension ● Recent investigations of NL use by consumers have used digital cameras to track consumers' eye movements to understand how consumers locate and understand NLs ● Four key barriers have been identified in the literature: 1) label's location on the package; 2) presentation of information within the label; 3) label's surface size; 4) surrounding visual clutter vkedco.blogspot.com
  7. 7. Confusing NL Examples vkedco.blogspot.com
  8. 8. Confusing NL Examples vkedco.blogspot.com
  9. 9. Recommendations from NL Use Literature 1) Central positions of NLs 2) Nutrients sorted by health relevance 3) Explanation of nutrients 4) Reduced visual clutter around NLs 5) Increased visual salience through contrast and orientation 6) Increased surface size of NLs vkedco.blogspot.com
  10. 10. NutriGlass: A System for Effective Nutrition Label Use on Smartphones vkedco.blogspot.com
  11. 11. Four Targeted Recommendations ● NutriGlass satisfies four out of six recommendations: 1) Central positions of NLs 3) Explanation of nutrients 4) Reduced visual clutter around NLs 6) Increased surface size of NLs vkedco.blogspot.com
  12. 12. Implementation Details ● The system's front end is implemented as an Android smartphone application ● The back end is currently implemented as a four node Linux cluster used for image analysis and data storage ● The front end and back end use the standard HTTP protocol to pass information back and forth vkedco.blogspot.com
  13. 13. Implementation Details ● The front end application sends captured frames to the back end wirelessly ● The back end cluster does image processing (1D skewed UPC and EAN barcode scanning) and, if the scanning is successful, the scanned barcode is used to retrieve a corresponding NL from a database of 230,000 NLs ● The retrieved NL is displayed on the smartphone vkedco.blogspot.com
  14. 14. Sample Screenshots vkedco.blogspot.com
  15. 15. Demos Online demo videos: - lab video - supermarket video vkedco.blogspot.com
  16. 16. Hardware Details ● A Linux cluster was built out of four Dell computers ● Each node computer has an Intel Core i5-6503.2 GHz dual-core processor that supports 64-bit computing ● The node's processor has 3MB of cache memory ● Each node has 6GB DDR3 SDRAM and 320GB of hard disk space vkedco.blogspot.com
  17. 17. Software Details ● Ubuntu 12.04 LTS was installed on each machine ● JBoss was used to build and configure the cluster ● JBoss AS 7.1.1 was installed on every node ● Load balancing is done with the Apache mod_cluster module ● The cluster has one master and three slaves ● All four machines are part of a local area network vkedco.blogspot.com
  18. 18. NutriGlass 1.0 on Google Play The free front end application is available on Google Play; search “NutriGlass on Google Play” to download vkedco.blogspot.com
  19. 19. NutriMenuNXT: Moving Caloric Awareness into Fast Food Chains vkedco.blogspot.com
  20. 20. NutriMenuNXT NutriMenuNXT is an Android application that allows the user to get nutritional information on menu items from 296 restaurant chains; search “NutriMenuNXT on Google Play” to download; online demo is here vkedco.blogspot.com
  21. 21. NutriMenuNXT vkedco.blogspot.com
  22. 22. Conclusions vkedco.blogspot.com
  23. 23. Back to Four Targeted Recommendations ● NutriGlass & NutriMenu satisfy four out of six recommendations found in the literature: 1) Central positions of NLs: NLs are displayed centrally on the smarpthone's screen 3) Explanation of nutrients: Wiki links 4) Reduced visual clutter around NLs: no visual clutter around the label 6) Increased surface size of NLs: NLs are displayed on the entire touchscreen vkedco.blogspot.com
  24. 24. Food Policy Implications ● The current NL design on product packages does not have to change physically to make NL use more effective ● Consumers should be able to use their smartphones to design their own NL presentation schemes suitable to their nutrition needs without requiring product manufacturers to change physical product packages vkedco.blogspot.com
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