ServAR: An augmented reality tool to guide the serving of food

The International Journal of Behavioral Nutrition and Physical Activity
Megan RolloClare E Collins

Abstract

Accurate estimation of food portion size is a difficult task. Visual cues are important mediators of portion size and therefore technology-based aids may assist consumers when serving and estimating food portions. The current study evaluated the usability and impact on estimation error of standard food servings of a novel augmented reality food serving aid, ServAR. Participants were randomised into one of three groups: 1) no information/aid (control); 2) verbal information on standard serving sizes; or 3) ServAR, an aid which overlayed virtual food servings over a plate using a tablet computer. Participants were asked to estimate the standard serving sizes of nine foods (broccoli, carrots, cauliflower, green beans, kidney beans, potato, pasta, rice, and sweetcorn) using validated food replicas. Wilcoxon signed-rank tests compared median served weights of each food to reference standard serving size weights. Percentage error was used to compare the estimation of serving size accuracy between the three groups. All participants also performed a usability test using the ServAR tool to guide the serving of one randomly selected food. Ninety adults (78.9% female; a mean (95%CI) age 25.8 (24.9-26.7) years; BMI 24.2 (23.2-25.2) kg/m2) ...Continue Reading

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Citations

Apr 2, 2020·American Journal of Lifestyle Medicine·Anne KuwabaraJeffrey Krauss
Apr 26, 2019·Journal of Human Nutrition and Dietetics : the Official Journal of the British Dietetic Association·H M BrownM E Rollo
Nov 11, 2020·Journal of Nutrition Education and Behavior·Kubra Isgin-AticiNuray Kanbur

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Software Mentioned

ZapWorks
Photoshop®
ServAR
Zappar
SPSS Statistics
Adobe Photoshop Lightroom®

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