Method, apparatus and system for food intake and physical activity assessment
First Claim
1. A system for remote monitoring of food intake and physical activity of a subject, comprising:
- a) a device configured to be worn on the subject for remote monitoring of food intake and physical activity by the subject, comprising;
a housing;
a bus inside the housing;
one or more physiological sensors connected to the bus;
two or more imaging sensors connected to the bus and positioned in the housing to record a stereo image;
an eating detector in the housing and connected to the bus, the eating detector comprising a light beam source configured in the device to pass a light beam in a path in front of the subject'"'"'s mouth and a light sensor able to measure light intensity data representative of movement of an object in the path of the light beam;
a microprocessor connected to the bus;
a data storage device connected to the bus and comprising a data storage medium;
programming instructions, stored on the data storage device, that when executed by the microprocessor cause the microprocessor to;
receive the light intensity data from the light sensor;
identify based on changes in the received light intensity data when the object is in the path of the light beam to determine when the subject is eating;
generate a signal to control the imaging sensors to obtain images of a food item being eaten by the subject when it is determined that the subject is eating; and
generate, from the images, a stereo image of the food item;
and a power supply connected to the bus;
b) a computer; and
c) a data communication interface for transferring data between the device and the computer,wherein one or both of the device and the computer comprises one or more programs for determining a dimension of the food item based on;
the stereo image of the food item, the distance between the two or more imaging sensors, and a fitting algorithm which fits a virtual template shape to the stereo image of the food item;
and determining a physical activity of the subject wearing the device based on data from at least one of the physiological sensors, or the imaging sensors.
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Accused Products
Abstract
Electronic systems, devices and methods are provided to accurately record and analyze food intake and physical activity in a subject. A device is provided to be placed on a subject which records video using at least two video cameras positioned to record stereoscopic image pair, as well as other physiological and/or environmental data including, for example, oxygen saturation, heart rate, and environmental factors such as physical location, temperature, and humidity. Video data is analyzed along with other data obtained by the device to determine food consumption and/or physical activity of the subject, much of which is accomplished by automated computer-implemented processes.
63 Citations
11 Claims
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1. A system for remote monitoring of food intake and physical activity of a subject, comprising:
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a) a device configured to be worn on the subject for remote monitoring of food intake and physical activity by the subject, comprising; a housing; a bus inside the housing; one or more physiological sensors connected to the bus; two or more imaging sensors connected to the bus and positioned in the housing to record a stereo image; an eating detector in the housing and connected to the bus, the eating detector comprising a light beam source configured in the device to pass a light beam in a path in front of the subject'"'"'s mouth and a light sensor able to measure light intensity data representative of movement of an object in the path of the light beam; a microprocessor connected to the bus; a data storage device connected to the bus and comprising a data storage medium; programming instructions, stored on the data storage device, that when executed by the microprocessor cause the microprocessor to; receive the light intensity data from the light sensor; identify based on changes in the received light intensity data when the object is in the path of the light beam to determine when the subject is eating; generate a signal to control the imaging sensors to obtain images of a food item being eaten by the subject when it is determined that the subject is eating; and generate, from the images, a stereo image of the food item; and a power supply connected to the bus; b) a computer; and c) a data communication interface for transferring data between the device and the computer, wherein one or both of the device and the computer comprises one or more programs for determining a dimension of the food item based on;
the stereo image of the food item, the distance between the two or more imaging sensors, and a fitting algorithm which fits a virtual template shape to the stereo image of the food item;and determining a physical activity of the subject wearing the device based on data from at least one of the physiological sensors, or the imaging sensors. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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Specification