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Adaptive behavior identification method based on physical properties

A technology of physical attributes and identification methods, applied in the field of sensor networks, can solve the problems of flexible adaptability and dynamic improvement without considering individual users, and achieve the effect of enhancing adaptability, improving system performance, and high recognition rate

Active Publication Date: 2017-09-08
ZHEJIANG UNIV OF TECH
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AI Technical Summary

Problems solved by technology

Traditional behavior recognition methods can effectively recognize human behavior, but most of them are based on a static model, which has a very strong dependence on the sample feature value, without considering the flexible adaptability and dynamic improvement of individual users, such as different People have different behavioral characteristics, one person's walking behavior may correspond to another person's running behavior

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  • Adaptive behavior identification method based on physical properties
  • Adaptive behavior identification method based on physical properties
  • Adaptive behavior identification method based on physical properties

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Embodiment Construction

[0051] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0052] refer to figure 1 and figure 2 , an adaptive behavior recognition method based on physical attributes, comprising the following steps:

[0053] Step 1: Extraction of sample eigenvalues

[0054] Step 1.1: First recruit 8 volunteers to do the traditional hula hoop exercise, wear the hardware on the waist of the volunteers, each volunteer performs each movement 1000 times, and collect the acceleration data during the exercise as a training sample, the accelerometer The frequency of reading data is 100Hz.

[0055] Step 1.2: First use the Kalman filter to filter out some abnormal data in the training samples, and obtain the available training set through filtering. The data in the training set is divided into three categories, which are the data of the X, Y, and Z axes of the accelerometer. Separate each action cycle and record the number of acceleration...

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Abstract

The invention discloses an adaptive behavior identification method based on physical properties. The method comprises the following steps that: collecting acceleration data in a movement process as a training sample, filtering the training sample by a Kalman filter, calculating the physical property of one integral period of each category of action as a sample feature value, adopting a dynamic sliding window of which the size is changeable to process a real-time data stream, selecting the average value and the attraction of each feature value as a voting basis, carrying out classification through voting, and finally, dynamically updating a sample feature value through an incremental learning process to enable the sample feature value to gradually approach to the behavior habits of the user to achieve a better behavior identification purpose. The method exhibits flexible adaptation and a high identification rate for individual users.

Description

technical field [0001] The invention belongs to the field of sensor networks, in particular to an adaptive behavior recognition method based on physical attributes. Background technique [0002] In recent years, with the rapid development of Internet of Things technology and information science and technology, human body behavior recognition has received more and more attention. It is an important technology to improve people's lives and has a very broad application prospect. Traditional behavior recognition methods can effectively recognize human behavior, but most of them are based on a static model, which has a very strong dependence on the sample feature value, without considering the flexible adaptability and dynamic improvement of individual users, such as different Different people have different behavioral characteristics, and the walking behavior of one person may correspond to the running behavior of another person. Therefore, it is very important to design a beha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/00G06K9/62G06T7/277G06T7/66
CPCG06T7/277G06T7/66G06T2207/20081G06V40/23G06F18/24G06F18/214
Inventor 钱丽萍李鹏欢吴远黄亮
Owner ZHEJIANG UNIV OF TECH
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