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eButton health monitor gets a facelift
Date:9/9/2013

lied the eButton to real-world dining scenarios in which diners were asked to wear the eButton on their chests, recording their eating. For each image, the eButton's new configuration method was implemented to automatically estimate the food portion size after the background was removed. To account for eaters leaving food behind, the Pitt team analyzed the last photograph taken during a meal. This leftover food was estimated and subtracted from the original portion size, as documented by earlier photographs.

"For food items with reasonable shapes, we found that this new method had an average error of only 3.69 percent," said Sun. "This error is much lower than that made by visual estimations, which results in an average error of about 20 percent."

While Sun and his colleagues were pleased with the results, there were three common foods that presented problems: ketchup, haddock, and ice cream. Because the properties of these provisions can change, results varied. Also, varying cooking techniques presented mixed consistencies, Sun said.

Even though the eButton is still not available commercially, Sun hopes to get it on the market soon. He and his team are now fine-tuning the device, working toward improving the accuracy of detecting portion sizes for irregularly shaped foods.


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Contact: B. Rose Huber
rhuber@pitt.edu
412-624-4356
University of Pittsburgh
Source:Eurekalert

Page: 1 2

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