A calculation device is provided with: an acquisition unit that acquires an acetone concentration in a gas constituent discharged from a user and measured; an estimation unit that estimates a calorie balance corresponding to the acetone concentration acquired by the acquisition unit based on a predetermined correlative relationship between acetone concentrations and calorie balance; and a processing execution unit that executes predetermined processing using an estimation result of the estimation unit.

Embodiments of the present disclosure are related to systems, methods, and computer-readable medium for image-based diet assessment. Image vignettes can form digital fingerprints that are derived from composite images of dietary patterns over a period of time, where the images can correspond to a grid of diet types and diet quality levels. Embodiments of the present disclosure include an image vignette generation and rendering process that is controlled based on a hierarchical algorithm and properties of the devices upon which the image vignettes are rendered.

Embodiments of the present disclosure are related to systems, methods, and computer-readable medium for image-based diet assessment. Image vignettes can form digital fingerprints that are derived from composite images of dietary patterns over a period of time, where the images can correspond to a grid of diet types and diet quality levels. Embodiments of the present disclosure include an image vignette generation and rendering process that is controlled based on a hierarchical algorithm and properties of the devices upon which the image vignettes are rendered.

A method of using an interactive body weight scale is presented. The body weight scale may have computing and data communication ability to track a user's weight by connecting to a number of different electronic devices. The body weight scale is capable of recording an audio message, converting the audio message to message text, and transmitting the message to a remote social network. The scale may also receive message responses from the remote network and play the messages back based on whether a particular message is a positive message. A scale use indicator provides a reminder for a user to use the body weight scale.

An interactive body weight scale is presented. The body weight scale may have computing and data communication ability to track a user's weight by connecting to a number of different electronic devices. The body weight scale is capable of recording an audio message, converting the audio message to message text, and transmitting the message to a remote social network. The scale may also receive message responses from the remote network and play the messages back based on whether a particular message is a positive message. A scale use indicator provides a reminder for a user to use the body weight scale.

A smart wearable device and a health monitoring method. The smart wearable device includes: an image acquisition unit configured to acquire a first image of food before a wearer takes the food and a second image of the food after the wearer takes the food; a calories analyzing unit configured to analyze the first image and the second image of the food to determine types of the food and an intake amount, and to determine an amount of intake calories based on the types of the food and the intake amount; and a calculation unit configured to generate a target exercise amount based on the amount of intake calories.

Embodiments of the present disclosure are related to systems, methods, and computer-readable medium for image-based diet assessment. Image vignettes can form digital fingerprints that are derived from composite images of dietary patterns over a period of time, where the images can correspond to a grid of diet types and diet quality levels. Embodiments of the present disclosure include an image vignette generation and rendering process that is controlled based on a hierarchical algorithm and properties of the devices upon which the image vignettes are rendered.

Systems and methods for determining dietary impacts on environmental measures and for identifying and assessing the quality of an individual's diet in view of cultural/prevailing dietary variance are discussed.