Publication

A new method for body posture detection using a kinematic sensor

Kamiar Aminian, Bijan Najafi, Philippe Robert
1999
Book Chapters

Abstract

The objective of this study is to present a new method of physical activity monitoring, able to detect body postures (sitting, standing and lying) from only one kinematic sensor attached on the chest. Wavelet analysis in conjunction with a simple kinematics model is used to recognize different posture transitions during daily physical activity. The postures observed with this technique matched those obtained with a reference optical motion system. Accurate results were also obtained during real-life testing outside of the laboratory. This new method shows promises for efficient body posture classification

Official source

https://infoscience.epfl.ch/entities/publication/dda5804a-2d9f-432c-93e6-339412cb0c9c

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Kamiar Aminian, Bijan Najafi, Philippe Robert
1999
Book Chapters

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/dda5804a-2d9f-432c-93e6-339412cb0c9c

About this result

Related concepts (32)

Simple machine

A simple machine is a mechanical device that changes the direction or magnitude of a force. In general, they can be defined as the simplest mechanisms that use mechanical advantage (also called leverage) to multiply force. Usually the term refers to the six classical simple machines that were defined by Renaissance scientists: Lever Wheel and axle Pulley Inclined plane Wedge Screw A simple machine uses a single applied force to do work against a single load force.

Kinematics

Kinematics is a subfield of physics, developed in classical mechanics, that describes the motion of points, bodies (objects), and systems of bodies (groups of objects) without considering the forces that cause them to move. Kinematics, as a field of study, is often referred to as the "geometry of motion" and is occasionally seen as a branch of mathematics. A kinematics problem begins by describing the geometry of the system and declaring the initial conditions of any known values of position, velocity and/or acceleration of points within the system.

Inverse kinematics

In computer animation and robotics, inverse kinematics is the mathematical process of calculating the variable joint parameters needed to place the end of a kinematic chain, such as a robot manipulator or animation character's skeleton, in a given position and orientation relative to the start of the chain. Given joint parameters, the position and orientation of the chain's end, e.g. the hand of the character or robot, can typically be calculated directly using multiple applications of trigonometric formulas, a process known as forward kinematics.

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