Method and system for contour fitting and posture identification, and method for contour model adaptation

摘要

A method for contour fitting and posture identification initially receives sensor data formed of a plurality of sensor signals. Thereafter at least one candidate posture or contour is determined from a set of at least one posture model based on the sensor data. Finally, user posture is determined from the at least one candidate posture through a decision making process. The sensor data can also be used to modify the at least one posture model for increasing identification accuracy. The sampling frequency of each sensor signal is dynamically adjusted to receive the sensor data in a nearly real-time manner.

主权项

1. A method for posture identification, comprising the steps of:
receiving, using a control device, sensor data formed of a plurality of sensor signals correlated with a user posture of a user from a plurality of sensors; determining, using the control device, at least one candidate posture from a set of at least one posture model based on the sensor data; and determining, using the control device, the user posture from the at least one candidate posture through a decision-making process, wherein the receiving step comprises the steps of:
determining at least one sampling frequency of the sensor signals;obtaining the sensor signals according to the at least one sampling frequency; andadjusting the at least one sampling frequency of the sensor signals based on an evaluation result of the sensor signals; and wherein the step of determining, using the control device, the at least one candidate posture comprises the steps of:
calculating characteristic values comprising a kurtosis estimate and a skewness estimate of a probability distribution from the plurality of sensor signals; anddetermining the at least one candidate posture by applying the characteristic values to each posture model in the set of at least one posture model.