A new health monitor not only documents what a person eats, but also accurately matches those images against a geometric-shape library, making it easier to count calories.

The researchers, who are trying to remove the guess work from the dieting process, said that visually gauging the size of a food based on an imaginary measurement unit is very subjective, and some individuals don't want to track what they consume.
eButton now includes a library of foods with nine common shapes: cuboid, wedge, cylinder, sphere, top and bottom half spheres, ellipse, half ellipse, and tunnel.
The device snaps a series of photos while a person is eating, and its new formula goes to work: removing the background image, zeroing in on the food, and measuring its volume by projecting and fitting the selected 3D shape to the 2D photograph using a series of mathematical equations.
The study is published in Measurement Science and Technology.
Source-ANI